{"id":87028,"date":"2026-07-29T17:24:29","date_gmt":"2026-07-29T09:24:29","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/87028.html"},"modified":"2026-07-29T17:24:29","modified_gmt":"2026-07-29T09:24:29","slug":"09-%e4%bd%bf%e7%94%a8redis%e4%bf%9d%e5%ad%98%e5%a4%a7%e6%a8%a1%e5%9e%8b%e5%a4%9a%e8%bd%ae%e5%af%b9%e8%af%9d%e4%b8%8a%e4%b8%8b%e6%96%87","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/87028.html","title":{"rendered":"09-\u4f7f\u7528Redis\u4fdd\u5b58\u5927\u6a21\u578b\u591a\u8f6e\u5bf9\u8bdd\u4e0a\u4e0b\u6587"},"content":{"rendered":"<h2>\u4f7f\u7528 Redis \u4fdd\u5b58\u5927\u6a21\u578b\u591a\u8f6e\u5bf9\u8bdd\u4e0a\u4e0b\u6587<\/h2>\n<p>\u7cfb\u5217&#xff1a;Python &#043; FastAPI \u5927\u6a21\u578b\u5e94\u7528\u57fa\u7840&#xff08;\u7b2c 9 \u7bc7&#xff09;<br \/>\n\u76ee\u6807&#xff1a;\u4f7f\u7528 Python \u5f02\u6b65 Redis \u4fdd\u5b58\u8fd1\u671f\u5bf9\u8bdd&#xff0c;\u7406\u89e3 TTL\u3001\u539f\u5b50\u5199\u5165\u3001\u7528\u6237\u9694\u79bb\u3001\u7f13\u5b58\u56de\u6e90\u548c\u5e76\u53d1\u8fb9\u754c\u3002<\/p>\n<h3>1. Redis \u5728\u5bf9\u8bdd\u7cfb\u7edf\u4e2d\u89e3\u51b3\u4ec0\u4e48\u95ee\u9898<\/h3>\n<p>\u7b2c 8 \u7bc7\u5df2\u7ecf\u4f7f\u7528 MySQL \u6301\u4e45\u5316\u6b63\u5f0f\u5bf9\u8bdd\u3002\u5982\u679c\u6bcf\u6b21\u6a21\u578b\u8c03\u7528\u90fd\u4ece MySQL \u67e5\u8be2\u5168\u90e8\u5386\u53f2&#xff0c;\u4f1a\u4ea7\u751f&#xff1a;<\/p>\n<ul>\n<li>\u6570\u636e\u5e93\u8bfb\u53d6\u538b\u529b&#xff1b;<\/li>\n<li>\u5386\u53f2\u5e8f\u5217\u5316\u5f00\u9500&#xff1b;<\/li>\n<li>\u66f4\u9ad8\u7684\u63a5\u53e3\u65f6\u5ef6&#xff1b;<\/li>\n<li>\u591a\u4e2a FastAPI \u8fdb\u7a0b\u65e0\u6cd5\u5171\u4eab\u5185\u5b58\u7f13\u5b58\u3002<\/li>\n<\/ul>\n<p>Redis \u662f\u5185\u5b58\u6570\u636e\u5e93&#xff0c;\u9002\u5408\u4fdd\u5b58\u201c\u8fd1\u671f\u3001\u9891\u7e41\u8bfb\u53d6\u3001\u5141\u8bb8\u8fc7\u671f\u201d\u7684\u4e0a\u4e0b\u6587&#xff1a;<\/p>\n<p>MySQL&#xff1a;\u6b63\u5f0f\u4f1a\u8bdd\u8bb0\u5f55&#xff0c;\u957f\u671f\u4fdd\u5b58&#xff0c;\u53ef\u5ba1\u8ba1<br \/>\nRedis&#xff1a;\u8fd1\u671f\u4e0a\u4e0b\u6587\u7f13\u5b58&#xff0c;\u5feb\u901f\u8bfb\u53d6&#xff0c;\u53ef\u4ee5\u5931\u6548<\/p>\n<p>\u63a8\u8350\u7684 Cache-Aside&#xff08;\u65c1\u8def\u7f13\u5b58&#xff09;\u6d41\u7a0b&#xff1a;<\/p>\n<p>\u8bfb\u53d6\u5bf9\u8bdd\u4e0a\u4e0b\u6587<br \/>\n    \u2193<br \/>\nRedis \u547d\u4e2d&#xff1f;<br \/>\n\u251c\u2500\u2500 \u662f&#xff1a;\u76f4\u63a5\u4f7f\u7528<br \/>\n\u2514\u2500\u2500 \u5426&#xff1a;\u4ece MySQL \u8bfb\u53d6 \u2192 \u5199\u56de Redis \u2192 \u4f7f\u7528<\/p>\n<p>Redis \u4e0d\u5e94\u6210\u4e3a\u552f\u4e00\u4e8b\u5b9e\u6765\u6e90\u3002\u7f13\u5b58\u88ab\u6e05\u7a7a\u3001\u8fc7\u671f\u6216\u6545\u969c\u65f6&#xff0c;\u7cfb\u7edf\u5e94\u8be5\u80fd\u591f\u4ece MySQL \u6062\u590d\u3002<\/p>\n<h3>2. \u4e3a\u4ec0\u4e48\u4e0d\u80fd\u4f7f\u7528\u4e00\u4e2a\u5168\u5c40 Python \u5217\u8868<\/h3>\n<p><span class=\"token comment\"># \u9519\u8bef\u793a\u4f8b&#xff1a;\u53ea\u5c5e\u4e8e\u5f53\u524d\u8fdb\u7a0b&#xff0c;\u91cd\u542f\u540e\u4e22\u5931<\/span><br \/>\nconversation_history<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">dict<\/span><span class=\"token punctuation\">[<\/span><span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">list<\/span><span class=\"token punctuation\">[<\/span><span class=\"token builtin\">dict<\/span><span class=\"token punctuation\">[<\/span><span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5728\u591a\u8fdb\u7a0b\u90e8\u7f72\u4e2d&#xff1a;<\/p>\n<p>\u8fdb\u7a0b A \u7684\u5185\u5b58\u5386\u53f2 \u2260 \u8fdb\u7a0b B \u7684\u5185\u5b58\u5386\u53f2<\/p>\n<p>\u540c\u4e00\u4e2a\u7528\u6237\u7684\u4e24\u6b21\u8bf7\u6c42\u53ef\u80fd\u88ab\u8d1f\u8f7d\u5747\u8861\u5230\u4e0d\u540c\u8fdb\u7a0b&#xff0c;\u5bfc\u81f4\u4e0a\u4e0b\u6587\u4e0d\u4e00\u81f4\u3002Redis \u63d0\u4f9b\u4e86\u591a\u4e2a\u8fdb\u7a0b\u5171\u4eab\u7684\u5916\u90e8\u72b6\u6001\u3002<\/p>\n<h3>3. Redis \u6570\u636e\u7ed3\u6784\u5982\u4f55\u9009\u62e9<\/h3>\n<p>\u5e38\u89c1\u9009\u62e9&#xff1a;<\/p>\n<table>\n<tr>\u6570\u636e\u7ed3\u6784\u9002\u5408\u573a\u666f\u672c\u6587\u662f\u5426\u91c7\u7528<\/tr>\n<tbody>\n<tr>\n<td>String<\/td>\n<td>\u6574\u6bb5 JSON \u4e00\u6b21\u8986\u76d6<\/td>\n<td>\u5426<\/td>\n<\/tr>\n<tr>\n<td>List<\/td>\n<td>\u6309\u987a\u5e8f\u8ffd\u52a0\u548c\u622a\u65ad\u6d88\u606f<\/td>\n<td>\u662f<\/td>\n<\/tr>\n<tr>\n<td>Hash<\/td>\n<td>\u6309\u5b57\u6bb5\u4fdd\u5b58\u4f1a\u8bdd\u5143\u6570\u636e<\/td>\n<td>\u53ef\u6269\u5c55<\/td>\n<\/tr>\n<tr>\n<td>Sorted Set<\/td>\n<td>\u6309\u65f6\u95f4\u6216\u5206\u6570\u6392\u5e8f<\/td>\n<td>\u7279\u6b8a\u573a\u666f<\/td>\n<\/tr>\n<tr>\n<td>Stream<\/td>\n<td>\u6d88\u606f\u4e8b\u4ef6\u6d41\u548c\u6d88\u8d39\u8005\u7ec4<\/td>\n<td>\u5f02\u6b65\u4efb\u52a1\u573a\u666f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u672c\u6587\u4f7f\u7528 Redis List&#xff1a;<\/p>\n<p>RPUSH&#xff1a;\u5728\u53f3\u4fa7\u8ffd\u52a0\u6d88\u606f<br \/>\nLRANGE&#xff1a;\u8bfb\u53d6\u6d88\u606f<br \/>\nLTRIM&#xff1a;\u53ea\u4fdd\u7559\u6700\u8fd1 N \u6761<br \/>\nEXPIRE&#xff1a;\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4<\/p>\n<h3>4. Key&#xff08;\u952e&#xff09;\u8bbe\u8ba1<\/h3>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p>ai:context:tenant_001:10001:550e8400-e29b-41d4-a716-446655440000<\/p>\n<p>\u7ec4\u6210\u90e8\u5206&#xff1a;<\/p>\n<ul>\n<li>\u56fa\u5b9a\u524d\u7f00 ai:context&#xff1b;<\/li>\n<li>\u79df\u6237\u6807\u8bc6&#xff1b;<\/li>\n<li>\u5df2\u9a8c\u8bc1\u7528\u6237 ID&#xff1b;<\/li>\n<li>\u4f1a\u8bdd UUID\u3002<\/li>\n<\/ul>\n<p>\u4e0d\u80fd\u53ea\u4f7f\u7528 conversation_id \u5c31\u9ed8\u8ba4\u62e5\u6709\u6743\u9650\u3002\u8c03\u7528\u7f13\u5b58\u524d&#xff0c;\u4e1a\u52a1\u5c42\u5fc5\u987b\u5df2\u7ecf\u9a8c\u8bc1\u5f53\u524d\u7528\u6237\u786e\u5b9e\u62e5\u6709\u8be5\u4f1a\u8bdd\u3002<\/p>\n<p>\u4e0d\u8981\u4f7f\u7528&#xff1a;<\/p>\n<p>KEYS ai:context:*<\/p>\n<p>KEYS \u53ef\u80fd\u626b\u63cf\u6574\u4e2a\u952e\u7a7a\u95f4\u5e76\u963b\u585e Redis\u3002\u7ba1\u7406\u4efb\u52a1\u5e94\u4f7f\u7528 SCAN \u5206\u6279\u8fed\u4ee3&#xff0c;\u666e\u901a\u8bf7\u6c42\u4e0d\u5e94\u904d\u5386\u5168\u90e8\u4f1a\u8bdd\u952e\u3002<\/p>\n<h3>5. \u521b\u5efa\u9879\u76ee<\/h3>\n<p>redis_context_demo\/<br \/>\n\u251c\u2500\u2500 context_store.py<br \/>\n\u251c\u2500\u2500 cache_service.py<br \/>\n\u251c\u2500\u2500 main.py<br \/>\n\u251c\u2500\u2500 tests\/<br \/>\n\u2502   \u2514\u2500\u2500 test_context_store.py<br \/>\n\u2514\u2500\u2500 requirements.txt<\/p>\n<p>requirements.txt&#xff1a;<\/p>\n<p>fastapi&gt;&#061;0.115,&lt;1<br \/>\nuvicorn[standard]&gt;&#061;0.30,&lt;1<br \/>\nredis&gt;&#061;5,&lt;7<br \/>\npydantic&gt;&#061;2.7,&lt;3<\/p>\n<p># \u6d4b\u8bd5\u4f9d\u8d56<br \/>\npytest&gt;&#061;8,&lt;9<br \/>\npytest-asyncio&gt;&#061;0.23,&lt;1<br \/>\nfakeredis&gt;&#061;2.23,&lt;3<\/p>\n<p>\u5b89\u88c5&#xff1a;<\/p>\n<p>python <span class=\"token operator\">&#8211;<\/span>m venv <span class=\"token punctuation\">.<\/span>venv<br \/>\n<span class=\"token punctuation\">.<\/span>\\\\<span class=\"token punctuation\">.<\/span>venv\\\\Scripts\\\\python<span class=\"token punctuation\">.<\/span>exe <span class=\"token operator\">&#8211;<\/span>m pip install <span class=\"token operator\">&#8211;<\/span>r requirements<span class=\"token punctuation\">.<\/span>txt<\/p>\n<h3>6. \u5b9a\u4e49\u6d88\u606f\u7ed3\u6784\u4e0e Redis Store<\/h3>\n<p>\u65b0\u5efa context_store.py&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> json<br \/>\n<span class=\"token keyword\">import<\/span> re<br \/>\n<span class=\"token keyword\">from<\/span> dataclasses <span class=\"token keyword\">import<\/span> asdict<span class=\"token punctuation\">,<\/span> dataclass<br \/>\n<span class=\"token keyword\">from<\/span> datetime <span class=\"token keyword\">import<\/span> datetime<span class=\"token punctuation\">,<\/span> timezone<br \/>\n<span class=\"token keyword\">from<\/span> uuid <span class=\"token keyword\">import<\/span> UUID<\/p>\n<p><span class=\"token keyword\">from<\/span> redis<span class=\"token punctuation\">.<\/span>asyncio <span class=\"token keyword\">import<\/span> Redis<br \/>\n<span class=\"token keyword\">from<\/span> redis<span class=\"token punctuation\">.<\/span>exceptions <span class=\"token keyword\">import<\/span> RedisError<\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ContextStoreError<\/span><span class=\"token punctuation\">(<\/span>RuntimeError<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;Redis \u4e0a\u4e0b\u6587\u5b58\u50a8\u7edf\u4e00\u5f02\u5e38\u3002&#034;&#034;&#034;<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ContextDataCorruptedError<\/span><span class=\"token punctuation\">(<\/span>ContextStoreError<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;Redis \u4e2d\u7684\u6d88\u606f\u7ed3\u6784\u635f\u574f\u3002&#034;&#034;&#034;<\/span><\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;dataclass<\/span><span class=\"token punctuation\">(<\/span>frozen<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ContextMessage<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u7f13\u5b58\u4e2d\u7684\u4e00\u6761\u5bf9\u8bdd\u6d88\u606f\u3002&#034;&#034;&#034;<\/span><\/p>\n<p>    role<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><br \/>\n    content<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><br \/>\n    created_at<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><\/p>\n<p>    <span class=\"token decorator annotation punctuation\">&#064;classmethod<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">create<\/span><span class=\"token punctuation\">(<\/span>cls<span class=\"token punctuation\">,<\/span> role<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span> content<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token string\">&#034;ContextMessage&#034;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u6821\u9a8c\u5e76\u521b\u5efa\u6d88\u606f\u3002&#034;&#034;&#034;<\/span><\/p>\n<p>        <span class=\"token keyword\">if<\/span> role <span class=\"token keyword\">not<\/span> <span class=\"token keyword\">in<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;user&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;assistant&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token comment\"># system \u89c4\u5219\u5e94\u7531\u670d\u52a1\u7aef\u7ef4\u62a4&#xff0c;\u4e0d\u5141\u8bb8\u4ece\u7f13\u5b58\u6062\u590d\u4e3a\u53ef\u4fe1\u6307\u4ee4<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ValueError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;role \u53ea\u80fd\u662f user \u6216 assistant&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        cleaned_content <span class=\"token operator\">&#061;<\/span> content<span class=\"token punctuation\">.<\/span>strip<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> cleaned_content<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ValueError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6d88\u606f\u5185\u5bb9\u4e0d\u80fd\u4e3a\u7a7a&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token keyword\">return<\/span> cls<span class=\"token punctuation\">(<\/span><br \/>\n            role<span class=\"token operator\">&#061;<\/span>role<span class=\"token punctuation\">,<\/span><br \/>\n            content<span class=\"token operator\">&#061;<\/span>cleaned_content<span class=\"token punctuation\">,<\/span><br \/>\n            created_at<span class=\"token operator\">&#061;<\/span>datetime<span class=\"token punctuation\">.<\/span>now<span class=\"token punctuation\">(<\/span>timezone<span class=\"token punctuation\">.<\/span>utc<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>isoformat<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">to_json<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u5e8f\u5217\u5316\u4e3a\u7d27\u51d1 JSON\u3002&#034;&#034;&#034;<\/span><\/p>\n<p>        <span class=\"token keyword\">return<\/span> json<span class=\"token punctuation\">.<\/span>dumps<span class=\"token punctuation\">(<\/span><br \/>\n            asdict<span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            ensure_ascii<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">False<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            separators<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;,&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;:&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token decorator annotation punctuation\">&#064;classmethod<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">from_json<\/span><span class=\"token punctuation\">(<\/span>cls<span class=\"token punctuation\">,<\/span> raw_value<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token string\">&#034;ContextMessage&#034;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u4ece Redis \u6587\u672c\u6062\u590d\u5e76\u4e25\u683c\u6821\u9a8c\u3002&#034;&#034;&#034;<\/span><\/p>\n<p>        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            data <span class=\"token operator\">&#061;<\/span> json<span class=\"token punctuation\">.<\/span>loads<span class=\"token punctuation\">(<\/span>raw_value<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">except<\/span> json<span class=\"token punctuation\">.<\/span>JSONDecodeError <span class=\"token keyword\">as<\/span> exc<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ContextDataCorruptedError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6d88\u606f\u4e0d\u662f\u5408\u6cd5 JSON&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">from<\/span> exc<\/p>\n<p>        <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> <span class=\"token builtin\">isinstance<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">dict<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ContextDataCorruptedError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6d88\u606f JSON \u5fc5\u987b\u662f\u5bf9\u8c61&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        role <span class=\"token operator\">&#061;<\/span> data<span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;role&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        content <span class=\"token operator\">&#061;<\/span> data<span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;content&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        created_at <span class=\"token operator\">&#061;<\/span> data<span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;created_at&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> role <span class=\"token keyword\">not<\/span> <span class=\"token keyword\">in<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;user&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;assistant&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ContextDataCorruptedError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6d88\u606f role \u4e0d\u5408\u6cd5&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> <span class=\"token builtin\">isinstance<\/span><span class=\"token punctuation\">(<\/span>content<span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">or<\/span> <span class=\"token keyword\">not<\/span> content<span class=\"token punctuation\">.<\/span>strip<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ContextDataCorruptedError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6d88\u606f content \u4e0d\u5408\u6cd5&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> <span class=\"token builtin\">isinstance<\/span><span class=\"token punctuation\">(<\/span>created_at<span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">or<\/span> <span class=\"token keyword\">not<\/span> created_at<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ContextDataCorruptedError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6d88\u606f created_at \u4e0d\u5408\u6cd5&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token keyword\">return<\/span> cls<span class=\"token punctuation\">(<\/span>role<span class=\"token operator\">&#061;<\/span>role<span class=\"token punctuation\">,<\/span> content<span class=\"token operator\">&#061;<\/span>content<span class=\"token punctuation\">,<\/span> created_at<span class=\"token operator\">&#061;<\/span>created_at<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">RedisContextStore<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u4f7f\u7528 Redis List \u4fdd\u5b58\u8fd1\u671f\u5bf9\u8bdd\u3002&#034;&#034;&#034;<\/span><\/p>\n<p>    TENANT_PATTERN <span class=\"token operator\">&#061;<\/span> re<span class=\"token punctuation\">.<\/span><span class=\"token builtin\">compile<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">r&#034;^[a-zA-Z0-9_-]{1,64}$&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">__init__<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        self<span class=\"token punctuation\">,<\/span><br \/>\n        redis<span class=\"token punctuation\">:<\/span> Redis<span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token operator\">*<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        ttl_seconds<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">int<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3600<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        max_messages<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">int<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> ttl_seconds <span class=\"token operator\">&lt;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ValueError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;ttl_seconds \u5fc5\u987b\u5927\u4e8e 0&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> max_messages <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ValueError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;max_messages \u4e0d\u80fd\u5c0f\u4e8e 2&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        self<span class=\"token punctuation\">.<\/span>redis <span class=\"token operator\">&#061;<\/span> redis<br \/>\n        self<span class=\"token punctuation\">.<\/span>ttl_seconds <span class=\"token operator\">&#061;<\/span> ttl_seconds<br \/>\n        self<span class=\"token punctuation\">.<\/span>max_messages <span class=\"token operator\">&#061;<\/span> max_messages<\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">build_key<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        self<span class=\"token punctuation\">,<\/span><br \/>\n        tenant_id<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        owner_id<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">int<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        conversation_id<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u6784\u9020\u7ecf\u8fc7\u6821\u9a8c\u7684 Redis Key&#xff0c;\u62d2\u7edd\u4efb\u610f\u7528\u6237\u8f93\u5165\u62fc\u63a5\u3002&#034;&#034;&#034;<\/span><\/p>\n<p>        <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> self<span class=\"token punctuation\">.<\/span>TENANT_PATTERN<span class=\"token punctuation\">.<\/span>fullmatch<span class=\"token punctuation\">(<\/span>tenant_id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ValueError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;tenant_id \u683c\u5f0f\u4e0d\u5408\u6cd5&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> owner_id <span class=\"token operator\">&lt;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ValueError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;owner_id \u5fc5\u987b\u5927\u4e8e 0&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            normalized_uuid <span class=\"token operator\">&#061;<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">(<\/span>UUID<span class=\"token punctuation\">(<\/span>conversation_id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">except<\/span> ValueError <span class=\"token keyword\">as<\/span> exc<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ValueError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;conversation_id \u5fc5\u987b\u662f\u5408\u6cd5 UUID&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">from<\/span> exc<\/p>\n<p>        <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">(<\/span><br \/>\n            <span class=\"token string-interpolation\"><span class=\"token string\">f&#034;ai:context:<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>tenant_id<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">:<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>owner_id<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">:<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>normalized_uuid<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><br \/>\n        <span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">append<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        self<span class=\"token punctuation\">,<\/span><br \/>\n        key<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        message<span class=\"token punctuation\">:<\/span> ContextMessage<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u539f\u5b50\u6267\u884c\u8ffd\u52a0\u3001\u622a\u65ad\u548c\u8bbe\u7f6e TTL\u3002&#034;&#034;&#034;<\/span><\/p>\n<p>        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token comment\"># transaction&#061;True \u4f1a\u4f7f\u7528 MULTI\/EXEC \u4f5c\u4e3a\u4e00\u4e2a\u4e8b\u52a1\u6279\u6b21\u6267\u884c<\/span><br \/>\n            <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">with<\/span> self<span class=\"token punctuation\">.<\/span>redis<span class=\"token punctuation\">.<\/span>pipeline<span class=\"token punctuation\">(<\/span>transaction<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">as<\/span> pipeline<span class=\"token punctuation\">:<\/span><br \/>\n                pipeline<span class=\"token punctuation\">.<\/span>rpush<span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">,<\/span> message<span class=\"token punctuation\">.<\/span>to_json<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                pipeline<span class=\"token punctuation\">.<\/span>ltrim<span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8211;<\/span>self<span class=\"token punctuation\">.<\/span>max_messages<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>                <span class=\"token comment\"># TTL \u53ea\u5728\u5199\u5165\u65f6\u5237\u65b0&#xff0c;\u5355\u7eaf\u8bfb\u53d6\u4e0d\u4f1a\u6c38\u4e45\u5ef6\u957f\u7f13\u5b58\u5bff\u547d<\/span><br \/>\n                pipeline<span class=\"token punctuation\">.<\/span>expire<span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">,<\/span> self<span class=\"token punctuation\">.<\/span>ttl_seconds<span class=\"token punctuation\">)<\/span><br \/>\n                <span class=\"token keyword\">await<\/span> pipeline<span class=\"token punctuation\">.<\/span>execute<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">except<\/span> RedisError <span class=\"token keyword\">as<\/span> exc<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ContextStoreError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5199\u5165 Redis \u4e0a\u4e0b\u6587\u5931\u8d25&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">from<\/span> exc<\/p>\n<p>    <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">replace<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        self<span class=\"token punctuation\">,<\/span><br \/>\n        key<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        messages<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">list<\/span><span class=\"token punctuation\">[<\/span>ContextMessage<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u7f13\u5b58\u672a\u547d\u4e2d\u65f6&#xff0c;\u7528\u6570\u636e\u5e93\u5386\u53f2\u91cd\u5efa Redis List\u3002&#034;&#034;&#034;<\/span><\/p>\n<p>        trimmed_messages <span class=\"token operator\">&#061;<\/span> messages<span class=\"token punctuation\">[<\/span><span class=\"token operator\">&#8211;<\/span>self<span class=\"token punctuation\">.<\/span>max_messages <span class=\"token punctuation\">:<\/span><span class=\"token punctuation\">]<\/span><br \/>\n        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">with<\/span> self<span class=\"token punctuation\">.<\/span>redis<span class=\"token punctuation\">.<\/span>pipeline<span class=\"token punctuation\">(<\/span>transaction<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">as<\/span> pipeline<span class=\"token punctuation\">:<\/span><br \/>\n                pipeline<span class=\"token punctuation\">.<\/span>delete<span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span><br \/>\n                <span class=\"token keyword\">if<\/span> trimmed_messages<span class=\"token punctuation\">:<\/span><br \/>\n                    pipeline<span class=\"token punctuation\">.<\/span>rpush<span class=\"token punctuation\">(<\/span><br \/>\n                        key<span class=\"token punctuation\">,<\/span><br \/>\n                        <span class=\"token operator\">*<\/span><span class=\"token punctuation\">(<\/span>message<span class=\"token punctuation\">.<\/span>to_json<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">for<\/span> message <span class=\"token keyword\">in<\/span> trimmed_messages<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                    <span class=\"token punctuation\">)<\/span><br \/>\n                    pipeline<span class=\"token punctuation\">.<\/span>expire<span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">,<\/span> self<span class=\"token punctuation\">.<\/span>ttl_seconds<span class=\"token punctuation\">)<\/span><br \/>\n                <span class=\"token keyword\">await<\/span> pipeline<span class=\"token punctuation\">.<\/span>execute<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">except<\/span> RedisError <span class=\"token keyword\">as<\/span> exc<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ContextStoreError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u91cd\u5efa Redis \u4e0a\u4e0b\u6587\u5931\u8d25&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">from<\/span> exc<\/p>\n<p>    <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> key<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">list<\/span><span class=\"token punctuation\">[<\/span>ContextMessage<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u6309\u5199\u5165\u987a\u5e8f\u8bfb\u53d6\u7f13\u5b58\u6d88\u606f\u3002&#034;&#034;&#034;<\/span><\/p>\n<p>        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            raw_messages <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> self<span class=\"token punctuation\">.<\/span>redis<span class=\"token punctuation\">.<\/span>lrange<span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">except<\/span> RedisError <span class=\"token keyword\">as<\/span> exc<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ContextStoreError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u8bfb\u53d6 Redis \u4e0a\u4e0b\u6587\u5931\u8d25&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">from<\/span> exc<\/p>\n<p>        <span class=\"token comment\"># decode_responses&#061;True \u65f6\u8fd4\u56de str&#xff1b;\u914d\u7f6e\u9519\u8bef\u65f6\u53ef\u80fd\u8fd4\u56de bytes<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token builtin\">any<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">not<\/span> <span class=\"token builtin\">isinstance<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">for<\/span> item <span class=\"token keyword\">in<\/span> raw_messages<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ContextDataCorruptedError<span class=\"token punctuation\">(<\/span><br \/>\n                <span class=\"token string\">&#034;Redis \u5ba2\u6237\u7aef\u5fc5\u987b\u542f\u7528 decode_responses&#061;True&#034;<\/span><br \/>\n            <span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n            ContextMessage<span class=\"token punctuation\">.<\/span>from_json<span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">for<\/span> item <span class=\"token keyword\">in<\/span> raw_messages<br \/>\n        <span class=\"token punctuation\">]<\/span><\/p>\n<p>    <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">delete<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> key<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u7528\u6237\u5220\u9664\u4f1a\u8bdd\u65f6\u540c\u6b65\u5220\u9664\u7f13\u5b58\u3002&#034;&#034;&#034;<\/span><\/p>\n<p>        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">await<\/span> self<span class=\"token punctuation\">.<\/span>redis<span class=\"token punctuation\">.<\/span>delete<span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">except<\/span> RedisError <span class=\"token keyword\">as<\/span> exc<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ContextStoreError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5220\u9664 Redis \u4e0a\u4e0b\u6587\u5931\u8d25&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">from<\/span> exc<\/p>\n<h3>7. \u4e3a\u4ec0\u4e48\u8ffd\u52a0\u3001\u622a\u65ad\u548c\u8fc7\u671f\u8981\u653e\u5728\u4e00\u4e2a\u4e8b\u52a1\u4e2d<\/h3>\n<p>\u5982\u679c\u5206\u4e09\u6b21\u72ec\u7acb\u6267\u884c&#xff1a;<\/p>\n<p>RPUSH \u6210\u529f<br \/>\nLTRIM \u5931\u8d25<br \/>\nEXPIRE \u672a\u6267\u884c<\/p>\n<p>\u8fd9\u4e2a Key \u53ef\u80fd\u6c38\u4e45\u5b58\u5728\u5e76\u65e0\u9650\u589e\u957f\u3002<\/p>\n<p>\u4f7f\u7528 MULTI\/EXEC \u53ef\u4ee5\u4fdd\u8bc1\u547d\u4ee4\u4e0d\u4f1a\u88ab\u5176\u4ed6\u5ba2\u6237\u7aef\u547d\u4ee4\u63d2\u5165\u3002\u9700\u8981\u6ce8\u610f&#xff0c;Redis \u4e8b\u52a1\u548c\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e8b\u52a1\u4e0d\u540c&#xff1a;\u8fd0\u884c\u671f\u547d\u4ee4\u9519\u8bef\u4e0d\u4f1a\u81ea\u52a8\u50cf MySQL \u4e00\u6837\u56de\u6eda\u4e4b\u524d\u547d\u4ee4&#xff0c;\u56e0\u6b64\u4ecd\u8981\u63d0\u524d\u6821\u9a8c\u53c2\u6570\u3002<\/p>\n<h3>8. \u5b9e\u73b0 Cache-Aside \u56de\u6e90<\/h3>\n<p>\u65b0\u5efa cache_service.py&#xff1a;<\/p>\n<p><span class=\"token keyword\">from<\/span> collections<span class=\"token punctuation\">.<\/span>abc <span class=\"token keyword\">import<\/span> Awaitable<span class=\"token punctuation\">,<\/span> Callable<\/p>\n<p><span class=\"token keyword\">from<\/span> context_store <span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">(<\/span><br \/>\n    ContextMessage<span class=\"token punctuation\">,<\/span><br \/>\n    ContextStoreError<span class=\"token punctuation\">,<\/span><br \/>\n    RedisContextStore<span class=\"token punctuation\">,<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><\/p>\n<p>HistoryLoader <span class=\"token operator\">&#061;<\/span> Callable<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> Awaitable<span class=\"token punctuation\">[<\/span><span class=\"token builtin\">list<\/span><span class=\"token punctuation\">[<\/span>ContextMessage<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ContextCacheService<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u7f16\u6392 Redis \u7f13\u5b58\u548c MySQL \u56de\u6e90\u3002&#034;&#034;&#034;<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">__init__<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> store<span class=\"token punctuation\">:<\/span> RedisContextStore<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>store <span class=\"token operator\">&#061;<\/span> store<\/p>\n<p>    <span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">load_context<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        self<span class=\"token punctuation\">,<\/span><br \/>\n        key<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        mysql_loader<span class=\"token punctuation\">:<\/span> HistoryLoader<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">list<\/span><span class=\"token punctuation\">[<\/span>ContextMessage<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;Redis \u547d\u4e2d\u5219\u8fd4\u56de&#xff1b;\u672a\u547d\u4e2d\u6216\u6545\u969c\u5219\u4ece MySQL \u83b7\u53d6\u3002&#034;&#034;&#034;<\/span><\/p>\n<p>        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            cached_messages <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> self<span class=\"token punctuation\">.<\/span>store<span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> cached_messages<span class=\"token punctuation\">:<\/span><br \/>\n                <span class=\"token keyword\">return<\/span> cached_messages<br \/>\n        <span class=\"token keyword\">except<\/span> ContextStoreError<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token comment\"># \u751f\u4ea7\u7cfb\u7edf\u5fc5\u987b\u5728\u8fd9\u91cc\u8bb0\u5f55\u8131\u654f\u65e5\u5fd7\u548c Redis \u6545\u969c\u6307\u6807<\/span><br \/>\n            <span class=\"token comment\"># Redis \u6545\u969c\u4e0d\u5e94\u76f4\u63a5\u8ba9\u6b63\u5f0f\u4f1a\u8bdd\u8bb0\u5f55\u4e0d\u53ef\u7528<\/span><br \/>\n            <span class=\"token keyword\">pass<\/span><\/p>\n<p>        database_messages <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> mysql_loader<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">await<\/span> self<span class=\"token punctuation\">.<\/span>store<span class=\"token punctuation\">.<\/span>replace<span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">,<\/span> database_messages<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">except<\/span> ContextStoreError<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token comment\"># \u56de\u5199\u5931\u8d25\u4e0d\u8986\u76d6\u6570\u636e\u5e93\u67e5\u8be2\u7684\u6b63\u786e\u7ed3\u679c<\/span><br \/>\n            <span class=\"token keyword\">pass<\/span><\/p>\n<p>        <span class=\"token keyword\">return<\/span> database_messages<\/p>\n<p>\u4e0a\u9762\u4e3a\u4e86\u7a81\u51fa\u63a7\u5236\u6d41\u7701\u7565\u4e86\u65e5\u5fd7\u5b9e\u73b0\u3002\u751f\u4ea7\u4ee3\u7801\u4e0d\u80fd\u4f7f\u7528\u7a7a pass \u9759\u9ed8\u5904\u7406&#xff0c;\u5e94\u8bb0\u5f55\u9519\u8bef\u4ee3\u7801\u3001Redis \u8282\u70b9\u548c\u8bf7\u6c42 ID&#xff0c;\u4f46\u4e0d\u80fd\u8bb0\u5f55\u5b8c\u6574\u7528\u6237\u6d88\u606f\u3002<\/p>\n<h3>9. \u5728 FastAPI \u751f\u547d\u5468\u671f\u4e2d\u521b\u5efa Redis \u5ba2\u6237\u7aef<\/h3>\n<p>\u65b0\u5efa main.py&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> os<br \/>\n<span class=\"token keyword\">from<\/span> collections<span class=\"token punctuation\">.<\/span>abc <span class=\"token keyword\">import<\/span> AsyncIterator<br \/>\n<span class=\"token keyword\">from<\/span> contextlib <span class=\"token keyword\">import<\/span> asynccontextmanager<\/p>\n<p><span class=\"token keyword\">from<\/span> fastapi <span class=\"token keyword\">import<\/span> FastAPI<span class=\"token punctuation\">,<\/span> Request<br \/>\n<span class=\"token keyword\">from<\/span> redis<span class=\"token punctuation\">.<\/span>asyncio <span class=\"token keyword\">import<\/span> Redis<\/p>\n<p><span class=\"token keyword\">from<\/span> context_store <span class=\"token keyword\">import<\/span> ContextMessage<span class=\"token punctuation\">,<\/span> RedisContextStore<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">required_env<\/span><span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    value <span class=\"token operator\">&#061;<\/span> os<span class=\"token punctuation\">.<\/span>getenv<span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>strip<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> value<span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">raise<\/span> RuntimeError<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u7f3a\u5c11\u73af\u5883\u53d8\u91cf&#xff1a;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>name<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> value<\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;asynccontextmanager<\/span><br \/>\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">lifespan<\/span><span class=\"token punctuation\">(<\/span>app<span class=\"token punctuation\">:<\/span> FastAPI<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> AsyncIterator<span class=\"token punctuation\">[<\/span><span class=\"token boolean\">None<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u521b\u5efa\u4e00\u4e2a\u4f9b\u6574\u4e2a FastAPI \u8fdb\u7a0b\u590d\u7528\u7684 Redis \u8fde\u63a5\u6c60\u3002&#034;&#034;&#034;<\/span><\/p>\n<p>    redis <span class=\"token operator\">&#061;<\/span> Redis<span class=\"token punctuation\">.<\/span>from_url<span class=\"token punctuation\">(<\/span><br \/>\n        required_env<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;REDIS_URL&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token comment\"># SSE \u548c JSON \u5185\u5bb9\u6309 UTF-8 \u5b57\u7b26\u4e32\u5904\u7406<\/span><br \/>\n        decode_responses<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        socket_connect_timeout<span class=\"token operator\">&#061;<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        socket_timeout<span class=\"token operator\">&#061;<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        health_check_interval<span class=\"token operator\">&#061;<\/span><span class=\"token number\">30<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token comment\"># \u542f\u52a8\u65f6\u6267\u884c\u53ea\u8bfb\u63a2\u6d4b&#xff0c;\u914d\u7f6e\u9519\u8bef\u5219\u76f4\u63a5\u542f\u52a8\u5931\u8d25<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> redis<span class=\"token punctuation\">.<\/span>ping<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    app<span class=\"token punctuation\">.<\/span>state<span class=\"token punctuation\">.<\/span>context_store <span class=\"token operator\">&#061;<\/span> RedisContextStore<span class=\"token punctuation\">(<\/span><br \/>\n        redis<span class=\"token punctuation\">,<\/span><br \/>\n        ttl_seconds<span class=\"token operator\">&#061;<\/span><span class=\"token number\">3600<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        max_messages<span class=\"token operator\">&#061;<\/span><span class=\"token number\">20<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">yield<\/span><\/p>\n<p>    <span class=\"token keyword\">await<\/span> redis<span class=\"token punctuation\">.<\/span>aclose<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>app <span class=\"token operator\">&#061;<\/span> FastAPI<span class=\"token punctuation\">(<\/span><br \/>\n    title<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;Redis \u591a\u8f6e\u5bf9\u8bdd\u4e0a\u4e0b\u6587&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    lifespan<span class=\"token operator\">&#061;<\/span>lifespan<span class=\"token punctuation\">,<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;app<span class=\"token punctuation\">.<\/span>post<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/demo\/context\/{conversation_id}&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">append_demo_message<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    conversation_id<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    request<span class=\"token punctuation\">:<\/span> Request<span class=\"token punctuation\">,<\/span><br \/>\n<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">dict<\/span><span class=\"token punctuation\">[<\/span><span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">int<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u4ec5\u6f14\u793a Store \u8c03\u7528&#xff1b;\u771f\u5b9e\u7528\u6237\u8eab\u4efd\u5fc5\u987b\u6765\u81ea\u8ba4\u8bc1\u7cfb\u7edf\u3002&#034;&#034;&#034;<\/span><\/p>\n<p>    store<span class=\"token punctuation\">:<\/span> RedisContextStore <span class=\"token operator\">&#061;<\/span> request<span class=\"token punctuation\">.<\/span>app<span class=\"token punctuation\">.<\/span>state<span class=\"token punctuation\">.<\/span>context_store<\/p>\n<p>    <span class=\"token comment\"># \u8fd9\u91cc\u7684\u7528\u6237\u548c\u79df\u6237\u4ec5\u4e3a\u672c\u5730\u6f14\u793a\u56fa\u5b9a\u503c<\/span><br \/>\n    key <span class=\"token operator\">&#061;<\/span> store<span class=\"token punctuation\">.<\/span>build_key<span class=\"token punctuation\">(<\/span><br \/>\n        tenant_id<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;demo&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        owner_id<span class=\"token operator\">&#061;<\/span><span class=\"token number\">10001<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        conversation_id<span class=\"token operator\">&#061;<\/span>conversation_id<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> store<span class=\"token punctuation\">.<\/span>append<span class=\"token punctuation\">(<\/span><br \/>\n        key<span class=\"token punctuation\">,<\/span><br \/>\n        ContextMessage<span class=\"token punctuation\">.<\/span>create<span class=\"token punctuation\">(<\/span><br \/>\n            role<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;user&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            content<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;\u8bf7\u89e3\u91ca Redis List\u3002&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span><br \/>\n    messages <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> store<span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;message_count&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>messages<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p>Redis URL \u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token variable\">$env<\/span>:REDIS_URL &#061; <span class=\"token string\">&#034;redis:\/\/:URL\u7f16\u7801\u540e\u7684\u5bc6\u7801&#064;127.0.0.1:6379\/0&#034;<\/span><\/p>\n<p>\u4e0d\u8981\u628a Redis \u66b4\u9732\u5230\u516c\u7f51&#xff0c;\u4e5f\u4e0d\u8981\u4f7f\u7528\u65e0\u5bc6\u7801\u7684\u751f\u4ea7\u5b9e\u4f8b\u3002<\/p>\n<h3>10. \u4f7f\u7528 fakeredis \u8fd0\u884c\u81ea\u52a8\u5316\u6d4b\u8bd5<\/h3>\n<p>\u65b0\u5efa tests\/test_context_store.py&#xff1a;<\/p>\n<p><span class=\"token keyword\">from<\/span> uuid <span class=\"token keyword\">import<\/span> uuid4<\/p>\n<p><span class=\"token keyword\">import<\/span> fakeredis<span class=\"token punctuation\">.<\/span>aioredis<br \/>\n<span class=\"token keyword\">import<\/span> pytest<\/p>\n<p><span class=\"token keyword\">from<\/span> context_store <span class=\"token keyword\">import<\/span> ContextMessage<span class=\"token punctuation\">,<\/span> RedisContextStore<\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;pytest<span class=\"token punctuation\">.<\/span>mark<span class=\"token punctuation\">.<\/span>asyncio<\/span><br \/>\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">test_append_trim_and_ttl<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u9a8c\u8bc1\u8ffd\u52a0\u3001\u6700\u5927\u6d88\u606f\u6570\u91cf\u548c TTL\u3002&#034;&#034;&#034;<\/span><\/p>\n<p>    redis <span class=\"token operator\">&#061;<\/span> fakeredis<span class=\"token punctuation\">.<\/span>aioredis<span class=\"token punctuation\">.<\/span>FakeRedis<span class=\"token punctuation\">(<\/span>decode_responses<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    store <span class=\"token operator\">&#061;<\/span> RedisContextStore<span class=\"token punctuation\">(<\/span><br \/>\n        redis<span class=\"token punctuation\">,<\/span><br \/>\n        ttl_seconds<span class=\"token operator\">&#061;<\/span><span class=\"token number\">60<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        max_messages<span class=\"token operator\">&#061;<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span><br \/>\n    key <span class=\"token operator\">&#061;<\/span> store<span class=\"token punctuation\">.<\/span>build_key<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;tenant_a&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">10001<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">(<\/span>uuid4<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">for<\/span> index <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">6<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">await<\/span> store<span class=\"token punctuation\">.<\/span>append<span class=\"token punctuation\">(<\/span><br \/>\n            key<span class=\"token punctuation\">,<\/span><br \/>\n            ContextMessage<span class=\"token punctuation\">.<\/span>create<span class=\"token punctuation\">(<\/span><br \/>\n                role<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;user&#034;<\/span> <span class=\"token keyword\">if<\/span> index <span class=\"token operator\">%<\/span> <span class=\"token number\">2<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">0<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token string\">&#034;assistant&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                content<span class=\"token operator\">&#061;<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u6d88\u606f <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>index<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span><\/p>\n<p>    messages <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> store<span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token comment\"># \u53ea\u4fdd\u7559\u6700\u540e 4 \u6761<\/span><br \/>\n    <span class=\"token keyword\">assert<\/span> <span class=\"token punctuation\">[<\/span>item<span class=\"token punctuation\">.<\/span>content <span class=\"token keyword\">for<\/span> item <span class=\"token keyword\">in<\/span> messages<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n        <span class=\"token string\">&#034;\u6d88\u606f 2&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;\u6d88\u606f 3&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;\u6d88\u606f 4&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;\u6d88\u606f 5&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">]<\/span><\/p>\n<p>    ttl <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> redis<span class=\"token punctuation\">.<\/span>ttl<span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">assert<\/span> <span class=\"token number\">0<\/span> <span class=\"token operator\">&lt;<\/span> ttl <span class=\"token operator\">&lt;&#061;<\/span> <span class=\"token number\">60<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> redis<span class=\"token punctuation\">.<\/span>aclose<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;pytest<span class=\"token punctuation\">.<\/span>mark<span class=\"token punctuation\">.<\/span>asyncio<\/span><br \/>\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">test_replace_and_delete<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u9a8c\u8bc1\u7f13\u5b58\u56de\u6e90\u91cd\u5efa\u548c\u5220\u9664\u3002&#034;&#034;&#034;<\/span><\/p>\n<p>    redis <span class=\"token operator\">&#061;<\/span> fakeredis<span class=\"token punctuation\">.<\/span>aioredis<span class=\"token punctuation\">.<\/span>FakeRedis<span class=\"token punctuation\">(<\/span>decode_responses<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    store <span class=\"token operator\">&#061;<\/span> RedisContextStore<span class=\"token punctuation\">(<\/span>redis<span class=\"token punctuation\">,<\/span> max_messages<span class=\"token operator\">&#061;<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    key <span class=\"token operator\">&#061;<\/span> store<span class=\"token punctuation\">.<\/span>build_key<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;tenant_a&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">10001<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">(<\/span>uuid4<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    source_messages <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n        ContextMessage<span class=\"token punctuation\">.<\/span>create<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;user&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u95ee\u9898&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        ContextMessage<span class=\"token punctuation\">.<\/span>create<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;assistant&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u56de\u7b54&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">]<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> store<span class=\"token punctuation\">.<\/span>replace<span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">,<\/span> source_messages<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">assert<\/span> <span class=\"token keyword\">await<\/span> store<span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&#061;<\/span> source_messages<\/p>\n<p>    <span class=\"token keyword\">await<\/span> store<span class=\"token punctuation\">.<\/span>delete<span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">assert<\/span> <span class=\"token keyword\">await<\/span> store<span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> redis<span class=\"token punctuation\">.<\/span>aclose<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8fd0\u884c&#xff1a;<\/p>\n<p><span class=\"token punctuation\">.<\/span>\\\\<span class=\"token punctuation\">.<\/span>venv\\\\Scripts\\\\python<span class=\"token punctuation\">.<\/span>exe <span class=\"token operator\">&#8211;<\/span>m pytest <span class=\"token operator\">&#8211;<\/span>q<\/p>\n<p>fakeredis \u53ef\u4ee5\u9a8c\u8bc1\u57fa\u672c\u547d\u4ee4\u548c\u4e1a\u52a1\u903b\u8f91&#xff0c;\u4f46\u4e0d\u80fd\u66ff\u4ee3\u771f\u5b9e Redis \u7684\u7f51\u7edc\u3001\u6301\u4e45\u5316\u3001\u4e3b\u4ece\u5207\u6362\u3001Cluster \u548c\u6545\u969c\u6062\u590d\u6d4b\u8bd5\u3002<\/p>\n<h3>11. Redis \u6545\u969c\u65f6\u5e94\u8be5\u600e\u4e48\u529e<\/h3>\n<p>\u5982\u679c MySQL \u662f\u4e8b\u5b9e\u6765\u6e90&#xff0c;\u63a8\u8350&#xff1a;<\/p>\n<p>Redis \u8bfb\u53d6\u5931\u8d25<br \/>\n    \u2193<br \/>\n\u8bb0\u5f55\u76d1\u63a7\u548c\u8131\u654f\u65e5\u5fd7<br \/>\n    \u2193<br \/>\n\u4ece MySQL \u52a0\u8f7d\u6709\u9650\u5386\u53f2<br \/>\n    \u2193<br \/>\n\u7ee7\u7eed\u6a21\u578b\u8c03\u7528<br \/>\n    \u2193<br \/>\n\u5f02\u6b65\u6216\u5c3d\u529b\u56de\u5199 Redis<\/p>\n<p>\u5982\u679c MySQL \u4e5f\u4e0d\u53ef\u7528&#xff0c;\u5219\u4e0d\u80fd\u5047\u88c5\u6709\u5386\u53f2\u3002\u5e94\u660e\u786e\u964d\u7ea7\u4e3a\u201c\u65e0\u6cd5\u52a0\u8f7d\u4e0a\u4e0b\u6587\u201d&#xff0c;\u6216\u8005\u62d2\u7edd\u9700\u8981\u591a\u8f6e\u8bed\u4e49\u7684\u8bf7\u6c42\u3002<\/p>\n<h3>12. TTL \u5e94\u8be5\u600e\u4e48\u8bbe\u7f6e<\/h3>\n<p>TTL \u6ca1\u6709\u901a\u7528\u6700\u4f73\u503c&#xff0c;\u9700\u8981\u8003\u8651&#xff1a;<\/p>\n<ul>\n<li>\u7528\u6237\u591a\u4e45\u4f1a\u7ee7\u7eed\u540c\u4e00\u4f1a\u8bdd&#xff1b;<\/li>\n<li>Redis \u5185\u5b58\u9884\u7b97&#xff1b;<\/li>\n<li>\u5386\u53f2\u4ece MySQL \u56de\u6e90\u7684\u6210\u672c&#xff1b;<\/li>\n<li>\u5bf9\u8bdd\u6570\u636e\u654f\u611f\u7a0b\u5ea6&#xff1b;<\/li>\n<li>\u5408\u89c4\u4fdd\u7559\u8981\u6c42\u3002<\/li>\n<\/ul>\n<p>\u672c\u6587\u9009\u62e9\u201c\u5199\u5165\u65f6\u5237\u65b0 TTL&#xff0c;\u8bfb\u53d6\u4e0d\u5237\u65b0\u201d\u3002\u8fd9\u6837\u53ea\u8bfb\u8bbf\u95ee\u4e0d\u4f1a\u8ba9\u654f\u611f\u7f13\u5b58\u6c38\u4e45\u5b58\u6d3b\u3002<\/p>\n<h3>13. \u5bf9\u6297\u6027\u5ba1\u67e5<\/h3>\n<h4>13.1 Redis \u4e0d\u662f\u6743\u9650\u7cfb\u7edf<\/h4>\n<p>Key \u4e2d\u5305\u542b\u7528\u6237 ID \u4e0d\u4ee3\u8868\u5df2\u7ecf\u9274\u6743\u3002\u7528\u6237\u8eab\u4efd\u5fc5\u987b\u6765\u81ea\u9a8c\u8bc1\u540e\u7684 Token \u6216 Session&#xff0c;\u5e76\u4e14 MySQL \u67e5\u8be2\u4ecd\u8981\u68c0\u67e5\u6240\u6709\u6743\u3002<\/p>\n<h4>13.2 List \u622a\u65ad\u53ef\u80fd\u7834\u574f\u95ee\u7b54\u5bf9<\/h4>\n<p>\u6309\u6d88\u606f\u6761\u6570\u4fdd\u7559\u6700\u540e N \u6761&#xff0c;\u53ef\u80fd\u53ea\u5269 Assistant \u56de\u7b54\u800c\u4e22\u6389\u5bf9\u5e94 User \u95ee\u9898\u3002\u751f\u4ea7\u4ee3\u7801\u66f4\u9002\u5408\u6309 Turn&#xff08;\u8f6e\u6b21&#xff09;\u4fdd\u5b58&#xff0c;\u6216\u6bcf\u6b21\u6309\u4e24\u6761\u6210\u5bf9\u622a\u65ad\u3002<\/p>\n<h4>13.3 \u6d88\u606f\u6570\u91cf\u4e0d\u7b49\u4e8e Token \u9884\u7b97<\/h4>\n<p>20 \u6761\u77ed\u6d88\u606f\u548c 20 \u6761\u957f\u5408\u540c\u5360\u7528\u5b8c\u5168\u4e0d\u540c\u3002\u4e0b\u4e00\u7bc7\u5c06\u6309\u6a21\u578b Token \u9884\u7b97\u6784\u5efa\u4e0a\u4e0b\u6587\u3002<\/p>\n<h4>13.4 \u591a\u8bf7\u6c42\u53ef\u80fd\u4ea4\u9519<\/h4>\n<p>Redis \u4e8b\u52a1\u53ea\u80fd\u4fdd\u8bc1\u4e00\u6b21\u8ffd\u52a0\u64cd\u4f5c\u539f\u5b50&#xff0c;\u4e0d\u80fd\u4fdd\u8bc1\u201c\u7528\u6237\u95ee\u9898\u2014\u8c03\u7528\u6a21\u578b\u2014\u52a9\u624b\u56de\u7b54\u201d\u6574\u4e2a\u957f\u6d41\u7a0b\u539f\u5b50\u3002\u540c\u4e00\u4f1a\u8bdd\u5e76\u53d1\u63a7\u5236\u4ecd\u5e94\u4f7f\u7528\u7b2c 8 \u7bc7\u7684 pending \u72b6\u6001\u6216\u53ef\u9760\u5206\u5e03\u5f0f\u4efb\u52a1\u673a\u5236\u3002<\/p>\n<h4>13.5 \u7f13\u5b58\u5185\u5bb9\u4ecd\u7136\u662f\u654f\u611f\u6570\u636e<\/h4>\n<p>Redis \u9700\u8981\u7f51\u7edc\u9694\u79bb\u3001\u8ba4\u8bc1\u3001TLS&#xff08;\u8de8\u4e0d\u53ef\u4fe1\u7f51\u7edc\u65f6&#xff09;\u3001\u6700\u5c0f\u6743\u9650\u3001\u5907\u4efd\u7b56\u7565\u548c\u6570\u636e\u8fc7\u671f\u7b56\u7565\u3002\u4e0d\u80fd\u56e0\u4e3a\u6570\u636e\u4f1a\u8fc7\u671f\u5c31\u5ffd\u7565\u5b89\u5168\u3002<\/p>\n<h4>13.6 \u7f13\u5b58\u51fb\u7a7f<\/h4>\n<p>\u4e00\u4e2a\u70ed\u95e8\u4f1a\u8bdd\u8fc7\u671f\u65f6&#xff0c;\u5927\u91cf\u8bf7\u6c42\u53ef\u80fd\u540c\u65f6\u56de\u6e90 MySQL\u3002\u53ef\u4ee5\u4f7f\u7528\u77ed\u671f\u4e92\u65a5\u3001\u5355\u98de\u8bf7\u6c42\u6216\u540e\u53f0\u5237\u65b0&#xff0c;\u4f46\u9501\u5fc5\u987b\u6709\u8d85\u65f6\u3001\u552f\u4e00\u4ee4\u724c\u548c\u5b89\u5168\u91ca\u653e\u903b\u8f91\u3002<\/p>\n<h4>13.7 Redis \u6301\u4e45\u5316\u4e0d\u7b49\u4e8e\u4e1a\u52a1\u6301\u4e45\u5316<\/h4>\n<p>RDB \u6216 AOF \u80fd\u63d0\u9ad8 Redis \u6062\u590d\u80fd\u529b&#xff0c;\u4f46\u4e0d\u80fd\u81ea\u52a8\u66ff\u4ee3\u5173\u7cfb\u6570\u636e\u5e93\u4e2d\u7684\u4e1a\u52a1\u7ea6\u675f\u3001\u5ba1\u8ba1\u548c\u6240\u6709\u6743\u6a21\u578b\u3002<\/p>\n<h3>14. \u672c\u7bc7\u603b\u7ed3<\/h3>\n<p>\u672c\u6587\u5b8c\u6210\u4e86 Redis \u4e0a\u4e0b\u6587\u7f13\u5b58\u57fa\u7840&#xff1a;<\/p>\n<ul>\n<li>MySQL \u4fdd\u5b58\u6b63\u5f0f\u8bb0\u5f55&#xff0c;Redis \u4fdd\u5b58\u8fd1\u671f\u7f13\u5b58&#xff1b;<\/li>\n<li>Redis List \u8d1f\u8d23\u987a\u5e8f\u8ffd\u52a0\u548c\u6709\u9650\u622a\u65ad&#xff1b;<\/li>\n<li>MULTI\/EXEC \u539f\u5b50\u6267\u884c\u8ffd\u52a0\u3001\u622a\u65ad\u548c\u8fc7\u671f&#xff1b;<\/li>\n<li>Key \u5305\u542b\u7ecf\u8fc7\u9a8c\u8bc1\u7684\u79df\u6237\u3001\u7528\u6237\u548c\u4f1a\u8bdd\u6807\u8bc6&#xff1b;<\/li>\n<li>\u7f13\u5b58\u672a\u547d\u4e2d\u6216\u6545\u969c\u65f6\u56de\u6e90 MySQL&#xff1b;<\/li>\n<li>TTL \u5728\u5199\u5165\u65f6\u5237\u65b0&#xff1b;<\/li>\n<li>\u4f7f\u7528 fakeredis \u9a8c\u8bc1\u6838\u5fc3\u884c\u4e3a&#xff1b;<\/li>\n<li>\u660e\u786e\u6d88\u606f\u6761\u6570\u3001\u5e76\u53d1\u548c Token \u9884\u7b97\u4ecd\u9700\u8fdb\u4e00\u6b65\u5904\u7406\u3002<\/li>\n<\/ul>\n<p>\u4e0b\u4e00\u7bc7\u5c06\u5b9e\u73b0\u57fa\u4e8e Token \u9884\u7b97\u7684\u6ed1\u52a8\u7a97\u53e3\u3001\u6458\u8981\u538b\u7f29\u548c\u91cd\u8981\u4fe1\u606f\u4fdd\u7559\u3002<\/p>\n<h3>15. \u7ec3\u4e60\u9898<\/h3>\n<li>\u628a\u6d88\u606f\u7f13\u5b58\u6539\u6210\u4ee5 Turn \u4e3a\u5355\u4f4d&#xff0c;\u907f\u514d\u622a\u65ad\u534a\u4e2a\u95ee\u7b54&#xff1b;<\/li>\n<li>\u589e\u52a0 Redis \u547d\u4e2d\u7387\u3001\u56de\u6e90\u6b21\u6570\u548c\u8bfb\u53d6\u65f6\u5ef6\u6307\u6807&#xff1b;<\/li>\n<li>\u7528\u6237\u5220\u9664\u4f1a\u8bdd\u540e\u540c\u65f6\u5220\u9664 MySQL \u548c Redis \u6570\u636e&#xff1b;<\/li>\n<li>\u4f7f\u7528\u771f\u5b9e Redis \u6d4b\u8bd5 TTL \u548c\u8fde\u63a5\u5931\u8d25\u964d\u7ea7&#xff1b;<\/li>\n<li>\u8bbe\u8ba1\u7f13\u5b58\u51fb\u7a7f\u4fdd\u62a4&#xff0c;\u4f46\u4e0d\u8981\u4f7f\u7528\u65e0\u8d85\u65f6\u7684\u9501&#xff1b;<\/li>\n<li>\u5bf9\u6bd4\u201c\u8bfb\u53d6\u5237\u65b0 TTL\u201d\u548c\u201c\u5199\u5165\u5237\u65b0 TTL\u201d\u7684\u6570\u636e\u4fdd\u7559\u5dee\u5f02\u3002<\/li>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528 Redis \u4fdd\u5b58\u5927\u6a21\u578b\u591a\u8f6e\u5bf9\u8bdd\u4e0a\u4e0b\u6587\u7cfb\u5217&#xff1a;Python  FastAPI \u5927\u6a21\u578b\u5e94\u7528\u57fa\u7840&#xff08;\u7b2c 9 \u7bc7&#xff09;<br \/>\n\u76ee\u6807&#xff1a;\u4f7f\u7528 Python \u5f02\u6b65 Redis \u4fdd\u5b58\u8fd1\u671f\u5bf9\u8bdd&#xff0c;\u7406\u89e3 TTL\u3001\u539f\u5b50\u5199\u5165\u3001\u7528\u6237\u9694\u79bb\u3001\u7f13\u5b58\u56de\u6e90\u548c\u5e76\u53d1\u8fb9\u754c\u30021. 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