{"id":115679,"date":"2026-10-13T02:49:09","date_gmt":"2026-10-12T18:49:09","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/115679.html"},"modified":"2026-10-13T02:49:09","modified_gmt":"2026-10-12T18:49:09","slug":"redis-%e5%a4%a7-key%e3%80%81%e7%83%ad-key%e3%80%81%e7%bc%93%e5%ad%98%e4%b8%80%e8%87%b4%e6%80%a7%e4%b8%8e%e6%80%a7%e8%83%bd%e4%bc%98%e5%8c%96%ef%bc%9a%e4%bb%8e%e9%97%ae%e9%a2%98%e5%ae%9a%e4%bd%8d","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/115679.html","title":{"rendered":"Redis \u5927 Key\u3001\u70ed Key\u3001\u7f13\u5b58\u4e00\u81f4\u6027\u4e0e\u6027\u80fd\u4f18\u5316\uff1a\u4ece\u95ee\u9898\u5b9a\u4f4d\u5230\u5b9e\u6218\u89e3\u51b3"},"content":{"rendered":"<p>\u771f\u5b9e\u9879\u76ee\u91cc Redis \u7528\u8d77\u6765\u5f88\u6162&#xff0c;\u6216\u8005 Redis \u4e0e MySQL \u7684\u6570\u636e\u4e0d\u4e00\u6837&#xff0c;\u5e94\u8be5\u600e\u4e48\u6392\u67e5&#xff1f;<\/p>\n<p>BigKey \u4e3a\u4ec0\u4e48\u5371\u9669\u3001HotKey \u4e3a\u4ec0\u4e48\u4f1a\u538b\u57ae\u5355\u4e2a\u8282\u70b9&#xff0c;\u4ee5\u53ca Cache Aside \u53cc\u5199\u4e3a\u4ec0\u4e48\u4e0d\u80fd\u5929\u7136\u4fdd\u8bc1\u4e00\u81f4\u6027\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261012184906-6acd2ba239500.png\" alt=\"\u8bf7\u6dfb\u52a0\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>1. BigKey \u5230\u5e95\u662f\u4ec0\u4e48&#xff1f;<\/h3>\n<p>BigKey&#xff08;\u5927 Key&#xff09; \u6307\u67d0\u4e2a Key \u5bf9\u5e94\u7684 Value \u7279\u522b\u5927&#xff0c;\u6216\u8005\u96c6\u5408\u91cc\u5305\u542b\u7279\u522b\u591a\u5143\u7d20\u3002<\/p>\n<p>\u4f8b\u5982\u4e00\u4e2a String \u4fdd\u5b58\u6570 MB \u7684 JSON\u3001\u4e00\u4efd Hash \u4fdd\u5b58\u51e0\u5341\u4e07\u4e2a Field\u3001\u4e00\u4efd Set \u4fdd\u5b58\u6d77\u91cf\u7528\u6237 ID\u3002<\/p>\n<p>\u6ce8\u610f&#xff0c;Key \u7684\u540d\u79f0\u5f88\u957f\u4e0d\u662f BigKey \u7684\u4e3b\u8981\u542b\u4e49&#xff0c;\u91cd\u70b9\u662f\u5355\u4e2a Key \u80cc\u540e\u7684\u6570\u636e\u89c4\u6a21\u3002<\/p>\n<p>\u6b64\u5916&#xff0c;Redis \u6ca1\u6709\u4e00\u4e2a\u5bf9\u6240\u6709\u4e1a\u52a1\u90fd\u9002\u7528\u7684\u7edf\u4e00\u9608\u503c&#xff0c;\u7a76\u7adf\u591a\u5927\u7b97\u5371\u9669&#xff0c;\u8981\u6839\u636e\u6570\u636e\u7c7b\u578b\u3001\u5355\u6b21\u64cd\u4f5c\u91cf\u3001\u7f51\u7edc\u6761\u4ef6\u3001\u5b9e\u4f8b\u8d44\u6e90\u548c\u5ef6\u8fdf\u76ee\u6807\u6765\u5224\u65ad\u3002<\/p>\n<h3>2. \u5927 Key \u4e3a\u4ec0\u4e48\u53ef\u80fd\u62d6\u6162 Redis&#xff1f;<\/h3>\n<p>\u5927 Key \u5371\u9669\u4e0d\u53ea\u662f\u5360\u5185\u5b58\u3002\u4e00\u6b21 GET \u5de8\u578b String \u6216 HGETALL \u5de8\u578b Hash&#xff0c;\u53ef\u80fd\u4ea7\u751f\u5927\u91cf\u5e8f\u5217\u5316\u548c\u7f51\u7edc\u4f20\u8f93&#xff1b;HGETALL\u3001SMEMBERS \u8fd9\u79cd\u53d6\u6574\u4e2a\u96c6\u5408\u7684\u547d\u4ee4&#xff0c;\u5176\u5f00\u9500\u4e0e\u6570\u636e\u89c4\u6a21\u76f8\u5173\u3002<\/p>\n<p>\u5bf9\u5927\u578b\u590d\u6742\u5bf9\u8c61\u76f4\u63a5\u4f7f\u7528 DEL&#xff0c;\u53ef\u80fd\u6d89\u53ca\u5927\u91cf\u5185\u5b58\u91ca\u653e\u5de5\u4f5c&#xff0c;\u963b\u585e\u547d\u4ee4\u5904\u7406\u3002<\/p>\n<p>\u5927 Key \u8fd8\u4f1a\u589e\u52a0 RDB\u3001AOF\u3001\u590d\u5236\u3001\u8fc1\u79fb\u4ee5\u53ca\u5199\u65f6\u590d\u5236\u671f\u95f4\u7684\u8d44\u6e90\u5f00\u9500\u3002<\/p>\n<p>Redis \u7684\u8fd9\u7c7b\u5ef6\u8fdf\u4e0d\u5e94\u76f4\u63a5\u5f52\u7ed3\u4e3a Java GC&#xff0c;\u56e0\u4e3a Redis Server \u81ea\u8eab\u5e76\u4e0d\u662f\u4e00\u4e2a\u8fd0\u884c\u5728 JVM \u4e2d\u7684\u7a0b\u5e8f\u3002<\/p>\n<h3>3. \u600e\u6837\u53d1\u73b0\u5927 Key&#xff1f;<\/h3>\n<p>\u53ef\u4ee5\u5148\u5728\u6388\u6743\u7684\u6d4b\u8bd5\u73af\u5883\u6216\u4f4e\u5cf0\u671f\u4f7f\u7528&#xff1a;<\/p>\n<p>redis-cli <span class=\"token parameter variable\">&#8211;bigkeys<\/span><br \/>\nredis-cli <span class=\"token parameter variable\">&#8211;memkeys<\/span><\/p>\n<p>&#8211;bigkeys \u4e3b\u8981\u6309\u6570\u636e\u7c7b\u578b\u5bfb\u627e\u8f83\u5927\u7684 Key&#xff0c;&#8211;memkeys \u66f4\u5173\u6ce8\u5185\u5b58\u5360\u7528\u3002<\/p>\n<p>\u4e24\u8005\u901a\u5e38\u9700\u8981\u626b\u63cf\u5927\u91cf Key&#xff0c;\u751f\u4ea7\u4e0a\u5e94\u8bc4\u4f30\u65f6\u95f4\u3001\u8d1f\u8f7d\u548c\u6743\u9650&#xff0c;\u4e0d\u8981\u8ba4\u4e3a\u4f7f\u7528 SCAN \u5c31\u5b8c\u5168\u6ca1\u6709\u5f00\u9500\u3002<\/p>\n<p>\u5982\u679c\u5df2\u7ecf\u77e5\u9053\u6000\u7591\u5bf9\u8c61&#xff0c;\u53ef\u4ee5\u8fdb\u4e00\u6b65\u67e5\u770b&#xff1a;<\/p>\n<p>TYPE user:all:members<br \/>\nMEMORY USAGE user:all:members<br \/>\nHLEN user:all:members<br \/>\nSCARD article:likes<br \/>\nSTRLEN article:blob<\/p>\n<p>HLEN\u3001SCARD\u3001STRLEN \u5206\u522b\u9002\u7528\u4e8e\u4e0d\u540c\u7c7b\u578b&#xff0c;\u4e0d\u80fd\u5bf9\u6240\u6709 Key \u968f\u4fbf\u5957\u7528\u3002<\/p>\n<p>MEMORY USAGE \u8fd4\u56de\u7684\u662f Redis \u5bf9\u8be5 Key \u53ca Value \u7684\u5185\u5b58\u5360\u7528\u4f30\u8ba1&#xff0c;\u5305\u542b\u76f8\u5173\u7ed3\u6784\u5f00\u9500&#xff1b;\u5bf9\u4e8e\u805a\u5408\u7c7b\u578b&#xff0c;\u5b83\u53ef\u80fd\u4f7f\u7528\u62bd\u6837\u4f30\u7b97\u3002<\/p>\n<h3>4. \u5927 Key \u600e\u4e48\u4f18\u5316&#xff1f;<\/h3>\n<p>\u5e38\u89c1\u65b9\u6cd5\u662f\u62c6\u5206\u3001\u5206\u9875\u3001\u9650\u5236\u589e\u957f\u548c\u907f\u514d\u6574\u5bf9\u8c61\u64cd\u4f5c\u3002<\/p>\n<p>\u4f8b\u5982\u4e0d\u8981\u628a\u6240\u6709\u7528\u6237\u7684\u4fe1\u606f\u585e\u8fdb user:all&#xff0c;\u53ef\u4ee5\u6309\u4e1a\u52a1 ID \u62c6\u6210 user:1001 \u7b49 Key\u3002<\/p>\n<p>\u5217\u8868\u3001Hash \u548c\u96c6\u5408\u53ef\u6309\u6279\u8bfb\u53d6&#xff0c;\u4f7f\u7528 HSCAN\u3001SSCAN\u3001ZSCAN \u7b49\u589e\u91cf\u8fed\u4ee3\u65b9\u5f0f\u5904\u7406\u5927\u96c6\u5408&#xff0c;\u800c\u4e0d\u662f\u6bcf\u6b21 HGETALL \u5168\u90e8\u53d6\u56de\u3002<\/p>\n<p>\u5bf9\u4e8e\u9700\u8981\u5220\u9664\u7684\u5927\u96c6\u5408&#xff0c;\u53ef\u4ee5\u8003\u8651&#xff1a;<\/p>\n<p>UNLINK user:all:members<\/p>\n<p>UNLINK \u5148\u628a Key \u4ece\u952e\u7a7a\u95f4\u79fb\u9664&#xff0c;\u518d\u7531\u540e\u53f0\u7ebf\u7a0b\u5904\u7406\u5185\u5b58\u91ca\u653e&#xff0c;\u901a\u5e38\u6bd4\u76f4\u63a5 DEL \u5927\u5bf9\u8c61\u66f4\u6709\u5229\u4e8e\u964d\u4f4e\u4e3b\u7ebf\u7a0b\u963b\u585e\u3002<\/p>\n<p>\u5b83\u4e0d\u610f\u5473\u7740\u5185\u5b58\u4e00\u5b9a\u4f1a\u5728\u547d\u4ee4\u8fd4\u56de\u7684\u77ac\u95f4\u91ca\u653e\u5b8c\u6bd5&#xff0c;\u4e5f\u4e0d\u662f\u5141\u8bb8\u65e0\u9650\u521b\u5efa\u5927 Key \u7684\u7406\u7531\u3002<\/p>\n<h3>5. HotKey \u53c8\u662f\u4ec0\u4e48&#xff1f;<\/h3>\n<p>HotKey&#xff08;\u70ed Key&#xff09; \u662f\u77ed\u65f6\u95f4\u5185\u88ab\u975e\u5e38\u9891\u7e41\u8bbf\u95ee\u7684 Key\u3002\u5b83\u53ef\u80fd\u53ea\u6709\u51e0\u5341\u5b57\u8282&#xff0c;\u4f8b\u5982&#xff1a;<\/p>\n<p>product:flash:1001<\/p>\n<p>\u5f53\u79d2\u6740\u6d3b\u52a8\u671f\u95f4\u5927\u91cf\u7528\u6237\u90fd\u67e5\u8be2\u5b83\u65f6&#xff0c;\u5373\u4f7f\u5355\u6b21 GET \u5f88\u5feb&#xff0c;\u4e5f\u53ef\u80fd\u8ba9\u5bf9\u5e94 Redis \u8282\u70b9\u7684 CPU\u3001\u7f51\u7edc\u5e26\u5bbd\u6216\u8fde\u63a5\u5904\u7406\u6210\u4e3a\u74f6\u9888\u3002<\/p>\n<p>\u5728 Redis Cluster \u4e2d&#xff0c;\u4e00\u4e2a Key \u53ea\u4f1a\u6620\u5c04\u5230\u4e00\u4e2a\u54c8\u5e0c\u69fd&#xff0c;\u7531\u67d0\u4e2a\u5206\u7247\u8d1f\u8d23&#xff0c;\u6240\u4ee5\u589e\u52a0\u5176\u4ed6 Master \u4e0d\u4f1a\u81ea\u52a8\u5206\u644a\u8fd9\u4e2a Key \u7684\u5199\u5165\u6d41\u91cf\u3002<\/p>\n<h3>6. BigKey \u548c HotKey \u6709\u4ec0\u4e48\u672c\u8d28\u533a\u522b&#xff1f;<\/h3>\n<table>\n<tr>\u5bf9\u6bd4BigKeyHotKey<\/tr>\n<tbody>\n<tr>\n<td>\u6838\u5fc3\u6307\u6807<\/td>\n<td>Value \u5927\u5c0f\u3001\u5143\u7d20\u6570\u91cf<\/td>\n<td>\u8bbf\u95ee\u9891\u7387\u3001\u5355 Key QPS<\/td>\n<\/tr>\n<tr>\n<td>\u5178\u578b\u95ee\u9898<\/td>\n<td>\u5185\u5b58\u3001\u4f20\u8f93\u3001\u904d\u5386\u3001\u5220\u9664\u8017\u65f6<\/td>\n<td>\u5355\u8282\u70b9 CPU \/ \u5e26\u5bbd \/ \u8bf7\u6c42\u96c6\u4e2d<\/td>\n<\/tr>\n<tr>\n<td>\u4e3b\u8981\u529e\u6cd5<\/td>\n<td>\u62c6\u5206\u3001\u5206\u9875\u3001\u907f\u514d\u5168\u91cf\u64cd\u4f5c\u3001UNLINK<\/td>\n<td>\u672c\u5730\u7f13\u5b58\u3001\u5408\u5e76\u8bf7\u6c42\u3001\u9884\u70ed\u3001\u9650\u6d41\u3001\u5408\u7406\u5206\u6d41<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u56e0\u6b64&#xff0c;\u5927\u4e0d\u4e00\u5b9a\u70ed&#xff0c;\u70ed\u4e5f\u4e0d\u4e00\u5b9a\u5927&#xff1b;\u4e00\u4e2a Key \u540c\u65f6\u53c8\u5927\u53c8\u70ed\u65f6&#xff0c;\u98ce\u9669\u4f1a\u53e0\u52a0\u3002<\/p>\n<h3>7. \u70ed Key \u5982\u4f55\u5b9a\u4f4d&#xff1f;<\/h3>\n<p>\u4f18\u5148\u4f7f\u7528\u4e1a\u52a1\u6307\u6807&#xff1a;\u7ed9\u7f13\u5b58\u8bbf\u95ee\u8bb0\u5f55 Key \u6a21\u5f0f\u3001\u8bf7\u6c42\u91cf\u3001\u547d\u4e2d\u7387\u548c P95\/P99 \u8017\u65f6&#xff1b;\u5728 Redis Cluster \u4e2d\u7ed3\u5408\u5177\u4f53\u5206\u7247\u7684 CPU\u3001\u5165\u51fa\u6d41\u91cf\u3001\u547d\u4ee4\u7edf\u8ba1\u6392\u67e5\u3002<\/p>\n<p>\u67d0\u4e9b\u914d\u7f6e\u4e0b\u53ef\u4ee5\u5c1d\u8bd5&#xff1a;<\/p>\n<p>redis-cli <span class=\"token parameter variable\">&#8211;hotkeys<\/span><\/p>\n<p>\u8fd9\u4e2a\u6a21\u5f0f\u4f9d\u8d56 Redis \u7684 LFU \u8bbf\u95ee\u9891\u7387\u7edf\u8ba1&#xff0c;\u901a\u5e38\u9700\u8981\u542f\u7528\u5408\u9002\u7684 maxmemory-policy&#xff0c;\u4f8b\u5982 allkeys-lfu&#xff0c;\u4e0d\u662f\u4efb\u610f Redis \u5b9e\u4f8b\u90fd\u80fd\u76f4\u63a5\u5f97\u5230\u51c6\u786e\u70ed Key \u6392\u540d\u3002<\/p>\n<p>\u751f\u4ea7\u73af\u5883\u4e0d\u5efa\u8bae\u957f\u65f6\u95f4\u4f7f\u7528 MONITOR \u5168\u91cf\u89c2\u5bdf\u6240\u6709\u547d\u4ee4&#xff0c;\u56e0\u4e3a\u5176\u672c\u8eab\u4f1a\u9020\u6210\u989d\u5916\u5f00\u9500&#xff0c;\u8fd8\u53ef\u80fd\u66b4\u9732\u654f\u611f\u53c2\u6570\u3002<\/p>\n<p>\u66f4\u7a33\u59a5\u7684\u662f\u5e94\u7528\u4fa7\u91c7\u6837\u3001\u4ee3\u7406\u7edf\u8ba1\u548c\u9488\u5bf9\u6027\u8bca\u65ad\u3002<\/p>\n<h3>8. \u70ed Key \u600e\u6837\u89e3\u51b3&#xff1f;<\/h3>\n<p>\u5982\u679c\u662f\u8bfb\u591a\u5199\u5c11\u7684\u6570\u636e&#xff0c;\u53ef\u4ee5\u5728\u5e94\u7528\u8282\u70b9\u4f7f\u7528 Caffeine \u7b49\u672c\u5730\u7f13\u5b58&#xff0c;\u964d\u4f4e Redis \u5f80\u8fd4\u548c\u5355 Key \u538b\u529b&#xff1b;\u5fc5\u8981\u65f6\u914d\u5408 Redis \u7684\u5ba2\u6237\u7aef\u7f13\u5b58\u5931\u6548\u901a\u77e5\u673a\u5236\u3002<\/p>\n<p>\u5173\u952e\u662f\u8bbe\u7f6e\u5408\u7406 TTL&#xff0c;\u5e76\u5904\u7406\u5404\u5b9e\u4f8b\u95f4\u7684\u5931\u6548\u4e00\u81f4\u6027\u3002<\/p>\n<p>\u5982\u679c\u70ed\u70b9\u7a81\u7136\u51fa\u73b0&#xff0c;\u53ef\u4ee5\u901a\u8fc7\u7f13\u5b58\u9884\u70ed\u3001\u8bf7\u6c42\u5408\u5e76&#xff08;Singleflight&#xff09;\u3001\u9650\u6d41\u548c\u964d\u7ea7\u7f13\u89e3&#xff1b;\u6709\u6761\u4ef6\u7684\u90e8\u7f72\u53ef\u4ee5\u5206\u6563\u8bfb\u8bf7\u6c42\u5230\u526f\u672c&#xff0c;\u4f46\u9700\u8981\u63a5\u53d7\u590d\u5236\u5ef6\u8fdf\u3002<\/p>\n<p>\u5bf9\u4e8e\u8bfb\u5199\u6781\u9891\u7e41\u7684 Key&#xff0c;\u4e0d\u80fd\u60f3\u5f53\u7136\u901a\u8fc7\u968f\u673a\u540e\u7f00\u590d\u5236\u51e0\u4efd\u5c31\u89e3\u51b3&#xff1a;\u8fd9\u53ef\u80fd\u7834\u574f\u8ba1\u6570\u5668\u3001\u5e93\u5b58\u3001\u6392\u884c\u699c\u7684\u6b63\u786e\u6027\u3002<\/p>\n<p>\u8bfb\u7f13\u5b58\u526f\u672c\u548c\u53ef\u62c6\u5206\u7684\u4e1a\u52a1\u6570\u636e\u53ef\u4ee5\u6709\u7b56\u7565\u5730\u5206\u6563&#xff0c;\u4e0d\u80fd\u628a\u540c\u4e00\u4efd\u53ef\u53d8\u72b6\u6001\u968f\u610f\u590d\u5236\u6210\u591a\u4efd\u72ec\u7acb\u771f\u76f8\u3002<\/p>\n<h3>9. MySQL \u548c Redis \u4e3a\u4ec0\u4e48\u4f1a\u4e0d\u4e00\u81f4&#xff1f;<\/h3>\n<p>\u5047\u8bbe\u5546\u54c1\u540d\u79f0\u5728 MySQL \u91cc\u662f\u201c\u65e7\u540d\u79f0\u201d&#xff0c;Redis \u4e5f\u7f13\u5b58\u4e86\u65e7\u540d\u79f0\u3002\u7528\u6237\u4fee\u6539\u5546\u54c1\u540e&#xff0c;\u9700\u8981\u540c\u65f6\u8ba9 MySQL \u548c Redis \u8868\u8fbe\u65b0\u72b6\u6001\u3002<\/p>\n<p>\u4f46 MySQL \u4e8b\u52a1\u548c Redis DEL \u4e0d\u5c5e\u4e8e\u540c\u4e00\u4e2a\u539f\u5b50\u4e8b\u52a1&#xff0c;\u56e0\u6b64\u53ef\u80fd\u51fa\u73b0\u6570\u636e\u5e93\u5df2\u63d0\u4ea4\u3001\u7f13\u5b58\u5c1a\u672a\u6e05\u7406&#xff0c;\u6216\u8005\u5e76\u53d1\u67e5\u8be2\u628a\u65e7\u6570\u636e\u91cd\u65b0\u5199\u56de Redis\u3002<\/p>\n<p>\u6ca1\u6709\u8de8\u7cfb\u7edf\u539f\u5b50\u63d0\u4ea4&#xff0c;\u5c31\u4e0d\u80fd\u8bf4\u53cc\u5199\u5929\u7136\u5f3a\u4e00\u81f4\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261012184907-6acd2ba3dc8b9.png\" alt=\"\u8bf7\u6dfb\u52a0\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>10. \u4e3a\u4ec0\u4e48\u901a\u5e38\u5148\u66f4\u65b0\u6570\u636e\u5e93&#xff0c;\u518d\u5220\u9664\u7f13\u5b58&#xff1f;<\/h3>\n<p>Cache Aside&#xff08;\u65c1\u8def\u7f13\u5b58&#xff09; \u7684\u5178\u578b\u8bfb\u53d6\u987a\u5e8f\u662f&#xff1a;\u67e5 Redis&#xff0c;\u672a\u547d\u4e2d\u518d\u67e5 MySQL&#xff0c;\u6700\u540e\u5c06\u67e5\u8be2\u7ed3\u679c\u5199\u56de Redis\u3002<\/p>\n<p>\u5bf9\u4e8e\u66f4\u65b0&#xff0c;\u5e38\u89c1\u987a\u5e8f\u662f&#xff1a;<\/p>\n<p>\u4e1a\u52a1\u66f4\u65b0\u8bf7\u6c42<br \/>\n   \u2193<br \/>\nMySQL \u4e8b\u52a1\u63d0\u4ea4\u6210\u529f<br \/>\n   \u2193<br \/>\n\u5220\u9664\u5bf9\u5e94\u7684 Redis \u7f13\u5b58<br \/>\n   \u2193<br \/>\n\u4e0b\u4e00\u6b21\u8bfb\u53d6\u65f6&#xff0c;\u4ece MySQL \u91cd\u5efa\u7f13\u5b58<\/p>\n<p>\u4f2a\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">update_product<\/span><span class=\"token punctuation\">(<\/span>product_id<span class=\"token punctuation\">,<\/span> new_name<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> db<span class=\"token punctuation\">.<\/span>update_product_and_commit<span class=\"token punctuation\">(<\/span>product_id<span class=\"token punctuation\">,<\/span> new_name<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> redis<span class=\"token punctuation\">.<\/span>delete<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;product:<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>product_id<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8fd9\u6bd4\u6bcf\u6b21\u540c\u65f6\u66f4\u65b0 MySQL \u548c Redis \u4e2d\u7684\u5b8c\u6574\u5bf9\u8c61\u901a\u5e38\u66f4\u7b80\u5355&#xff1a;\u5220\u9664\u52a8\u4f5c\u662f\u5e42\u7b49\u7684&#xff0c;\u4e0b\u4e00\u6b21\u8bfb\u53d6\u6309\u6570\u636e\u5e93\u5f53\u524d\u72b6\u6001\u91cd\u65b0\u6784\u5efa&#xff0c;\u51cf\u5c11\u4e86\u7f13\u5b58\u90e8\u5206\u5b57\u6bb5\u6f0f\u66f4\u65b0\u548c\u53cc\u5199\u987a\u5e8f\u9519\u8bef\u7684\u673a\u4f1a\u3002<\/p>\n<p>\u4f46\u5b83\u53ea\u662f\u5b9e\u8df5\u4e2d\u5e38\u89c1\u7684\u6700\u7ec8\u4e00\u81f4\u6027\u65b9\u6848&#xff0c;\u5e76\u4e0d\u80fd\u4fdd\u8bc1\u6c38\u8fdc\u4e0d\u4f1a\u51fa\u73b0\u77ed\u6682\u65e7\u503c\u3002<\/p>\n<h3>11. \u4e3a\u4ec0\u4e48\u4e0d\u63a8\u8350\u5148\u5220\u9664\u7f13\u5b58&#xff0c;\u518d\u66f4\u65b0\u6570\u636e\u5e93&#xff1f;<\/h3>\n<p>\u8003\u8651\u4e24\u4e2a\u5e76\u53d1\u8bf7\u6c42&#xff1a;<\/p>\n<p>\u5199\u8bf7\u6c42 B&#xff1a;\u5220\u9664\u7f13\u5b58<\/p>\n<p>\u8bfb\u8bf7\u6c42 A&#xff1a;Redis Miss&#xff0c;\u8bfb\u53d6 MySQL \u65e7\u503c<\/p>\n<p>\u8bfb\u8bf7\u6c42 A&#xff1a;\u628a\u65e7\u503c\u5199\u5165 Redis<\/p>\n<p>\u5199\u8bf7\u6c42 B&#xff1a;\u63d0\u4ea4 MySQL \u65b0\u503c<\/p>\n<p>\u6700\u540e MySQL \u662f\u65b0\u503c&#xff0c;Redis \u53cd\u800c\u957f\u671f\u4fdd\u5b58\u4e86\u65e7\u503c&#xff0c;\u76f4\u5230 TTL \u5230\u671f\u6216\u518d\u6b21\u88ab\u5220\u9664\u3002<\/p>\n<p>\u6240\u4ee5\u201c\u5148\u5220\u9664\u7f13\u5b58\u518d\u66f4\u65b0\u6570\u636e\u5e93\u201d\u7684\u987a\u5e8f\u975e\u5e38\u5bb9\u6613\u8ba9\u5e76\u53d1\u8bfb\u628a\u65e7\u6570\u636e\u91cd\u65b0\u5199\u56de\u53bb\u3002<\/p>\n<h3>12. \u5148\u66f4\u65b0\u6570\u636e\u5e93\u518d\u5220\u9664\u7f13\u5b58&#xff0c;\u8fd8\u4f1a\u4e0d\u4e00\u81f4\u5417&#xff1f;<\/h3>\n<p>\u4ecd\u7136\u53ef\u80fd\u3002<\/p>\n<p>\u8003\u8651\u66f4\u7279\u6b8a\u4f46\u771f\u5b9e\u5b58\u5728\u7684\u5e76\u53d1\u7a97\u53e3&#xff1a;<\/p>\n<p>A&#xff1a;\u67e5\u8be2 Redis&#xff0c;\u672a\u547d\u4e2d<\/p>\n<p>A&#xff1a;\u5f00\u59cb\u67e5\u8be2 MySQL&#xff0c;\u62ff\u5230\u65e7\u503c 100<br \/>\n   &#xff08;\u6682\u672a\u56de\u586b&#xff09;<\/p>\n<p>B&#xff1a;\u66f4\u65b0 MySQL&#xff0c;\u65b0\u503c 200&#xff0c;\u63d0\u4ea4\u4e8b\u52a1<\/p>\n<p>B&#xff1a;\u5220\u9664 Redis \u7f13\u5b58<\/p>\n<p>A&#xff1a;\u628a\u4e4b\u524d\u62ff\u5230\u7684\u65e7\u503c 100 \u5199\u5165 Redis<\/p>\n<p>\u7ed3\u679c\u4ecd\u7136\u662f Redis&#061;100\u3001MySQL&#061;200\u3002<\/p>\n<p>\u4e5f\u5c31\u662f\u8bf4&#xff0c;\u6539\u53d8\u987a\u5e8f\u53ef\u4ee5\u964d\u4f4e\u98ce\u9669&#xff0c;\u5374\u65e0\u6cd5\u5355\u51ed\u987a\u5e8f\u5b8c\u5168\u6d88\u9664\u7ade\u6001\u3002<\/p>\n<p>\u5982\u679c B \u7684\u6570\u636e\u5e93\u4e8b\u52a1\u5df2\u63d0\u4ea4\u4f46\u5220\u9664 Redis \u5931\u8d25&#xff0c;\u540c\u6837\u4f1a\u51fa\u73b0\u4e0d\u4e00\u81f4\u3002<\/p>\n<h3>13. \u8fd9\u4e9b\u4e00\u81f4\u6027\u95ee\u9898\u600e\u4e48\u8865\u6551&#xff1f;<\/h3>\n<p>\u5148\u6839\u636e\u4e1a\u52a1\u5224\u65ad\u5141\u8bb8\u591a\u957f\u65f6\u95f4\u7684\u65e7\u6570\u636e\u3002\u4e00\u822c\u7f13\u5b58\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u7ec4\u5408&#xff1a;<\/p>\n<ul>\n<li>TTL&#xff1a;\u7ed9\u7f13\u5b58\u8bbe\u5b9a\u5408\u7406\u8fc7\u671f\u65f6\u95f4&#xff0c;\u9650\u5236\u65e7\u6570\u636e\u53ef\u80fd\u6301\u7eed\u5b58\u5728\u7684\u65f6\u95f4\u3002\u4f46\u82e5\u8fc7\u671f\u540e\u8bfb\u64cd\u4f5c\u53cd\u590d\u9047\u5230\u5e76\u53d1\u7ade\u6001\u6216\u5176\u4ed6\u5199\u5165&#xff0c;TTL \u4e0d\u662f\u5f3a\u4e00\u81f4\u8bc1\u660e\u3002<\/li>\n<li>\u5931\u8d25\u91cd\u8bd5&#xff1a;\u6570\u636e\u5e93\u63d0\u4ea4\u6210\u529f\u3001\u5220\u7f13\u5b58\u5931\u8d25\u540e&#xff0c;\u5bf9\u5220\u9664\u52a8\u4f5c\u8fdb\u884c\u6709\u754c\u91cd\u8bd5\u5e76\u8bb0\u5f55\u544a\u8b66\u3002\u907f\u514d\u53ea\u6253\u5370\u65e5\u5fd7\u540e\u4e22\u5931\u4efb\u52a1\u3002<\/li>\n<li>\u53ef\u9760\u4e8b\u4ef6\u8865\u507f&#xff1a;\u53ef\u4ee5\u901a\u8fc7 MySQL \u4e8b\u52a1 Outbox \u6216 Binlog CDC \u4ea7\u751f\u5931\u6548\u4e8b\u4ef6&#xff0c;\u5e76\u5728\u5f02\u6b65\u6d88\u8d39\u8005\u4e2d\u91cd\u8bd5\u5220\u9664\u3002\u9700\u8981\u5173\u6ce8\u91cd\u590d\u3001\u987a\u5e8f\u3001\u5ef6\u8fdf\u548c\u6d88\u8d39\u8005\u6545\u969c\u3002<\/li>\n<li>\u7248\u672c\u53f7\u6216\u539f\u5b50\u6821\u9a8c&#xff1a;\u5bf9\u8bfb\u56de\u586b\u548c\u5199\u5931\u6548\u4e4b\u95f4\u5efa\u7acb\u53ef\u6bd4\u8f83\u7684\u7248\u672c\/\u5e8f\u53f7&#xff0c;\u5728\u5199\u5165\u7f13\u5b58\u65f6\u62d2\u7edd\u8fc7\u65f6\u7248\u672c&#xff1b;\u5fc5\u987b\u5728 Redis \u4fa7\u6b63\u786e\u4fdd\u8bc1\u6bd4\u8f83\u4e0e\u5199\u5165\u7684\u539f\u5b50\u6027\u3002<\/li>\n<li>\u5ef6\u8fdf\u53cc\u5220&#xff1a;\u66f4\u65b0\u540e\u5148\u5220\u9664\u4e00\u6b21&#xff0c;\u7a0d\u540e\u518d\u5220\u9664\u4e00\u6b21&#xff0c;\u53ef\u4ee5\u7f29\u5c0f\u67d0\u4e9b\u65e7\u503c\u56de\u586b\u7a97\u53e3&#xff0c;\u4f46\u4e0d\u662f\u4e25\u683c\u6b63\u786e\u6027\u4fdd\u8bc1&#xff1b;\u5ef6\u8fdf\u65f6\u95f4\u5f88\u96be\u603b\u662f\u8986\u76d6\u6700\u6162\u8bfb\u8bf7\u6c42\u3002<\/li>\n<\/ul>\n<p>\u5bf9\u8d44\u91d1\u4f59\u989d\u3001\u652f\u4ed8\u72b6\u6001\u3001\u4e25\u683c\u5e93\u5b58\u7b49\u5173\u952e\u4e1a\u52a1&#xff0c;\u4e0d\u5e94\u53ea\u9760\u7f13\u5b58\u5224\u65ad\u6b63\u786e\u6027\u3002<\/p>\n<p>\u5e94\u7531 MySQL \u7b49\u4e3b\u5b58\u50a8\u7684\u4e8b\u52a1\u3001\u6761\u4ef6\u66f4\u65b0\u3001\u552f\u4e00\u7ea6\u675f\u6216\u5176\u4ed6\u4e00\u81f4\u6027\u673a\u5236\u4fdd\u969c\u6700\u7ec8\u7ed3\u679c&#xff1b;\u7f13\u5b58\u53ef\u4ee5\u7528\u4e8e\u975e\u5173\u952e\u52a0\u901f\u6216\u8005\u660e\u786e\u53ef\u5bb9\u5fcd\u9648\u65e7\u8bfb\u7684\u5b57\u6bb5\u3002<\/p>\n<h3>14. Redis \u6162&#xff0c;\u662f\u547d\u4ee4\u6267\u884c\u6162\u8fd8\u662f\u6574\u4e2a\u8bf7\u6c42\u6162&#xff1f;<\/h3>\n<p>\u7528\u6237\u611f\u53d7\u5230\u7684\u8017\u65f6\u901a\u5e38\u5305\u542b\u8fde\u63a5\u7b49\u5f85\u3001\u7f51\u7edc RTT\u3001Redis \u547d\u4ee4\u6392\u961f\u4e0e\u6267\u884c\u3001\u5e8f\u5217\u5316\u548c\u7ed3\u679c\u4f20\u8f93\u3002<\/p>\n<p>SLOWLOG \u53ea\u8bb0\u5f55 Redis \u547d\u4ee4\u5b9e\u9645\u6267\u884c\u8017\u65f6&#xff0c;\u4e0d\u5305\u62ec\u4e0e\u5ba2\u6237\u7aef\u8fdb\u884c\u7f51\u7edc I\/O \u7684\u5b8c\u6574\u65f6\u95f4\u3002<\/p>\n<p>\u6240\u4ee5\u4e00\u6b21\u5ba2\u6237\u7aef\u8bf7\u6c42\u82b1\u4e86 100ms&#xff0c;\u800c SLOWLOG \u6ca1\u6709\u8bb0\u5f55&#xff0c;\u5e76\u4e0d\u4ee3\u8868 Redis \u7aef\u5230\u7aef\u8bbf\u95ee\u6ca1\u6709\u95ee\u9898\u3002<\/p>\n<p>\u53ef\u80fd\u662f\u7f51\u7edc\u6296\u52a8\u3001\u8fde\u63a5\u6c60\u8017\u5c3d\u3001\u5927\u54cd\u5e94\u7ed3\u679c\u4f20\u8f93\u6216\u5e94\u7528\u7ebf\u7a0b\u963b\u585e\u3002<\/p>\n<h3>15. \u6392\u67e5 Redis \u6027\u80fd\u53ef\u4ee5\u5148\u770b\u54ea\u4e9b\u6307\u6807&#xff1f;<\/h3>\n<p>\u53ef\u4ee5\u5148\u67e5\u770b&#xff1a;<\/p>\n<p>INFO memory<br \/>\nINFO stats<br \/>\nINFO commandstats<br \/>\nINFO latencystats<br \/>\nINFO persistence<br \/>\nSLOWLOG GET <span class=\"token number\">20<\/span><br \/>\nLATENCY DOCTOR<\/p>\n<p>INFO memory \u5173\u6ce8\u5185\u5b58\u5360\u7528\u3001\u5cf0\u503c\u3001RSS \u548c\u788e\u7247\u5316&#xff1b;INFO stats \u5173\u6ce8 keyspace_hits\u3001keyspace_misses\u3001evicted_keys \u7b49\u7d2f\u8ba1\u6307\u6807&#xff1b;commandstats \u5e2e\u52a9\u5b9a\u4f4d\u54ea\u4e9b\u547d\u4ee4\u6d88\u8017\u4e86\u8d44\u6e90\u3002<\/p>\n<p>SLOWLOG GET \u80fd\u770b\u5230\u8d85\u8fc7\u9608\u503c\u7684\u6162\u547d\u4ee4&#xff0c;\u9608\u503c\u5355\u4f4d\u901a\u5e38\u4e3a\u5fae\u79d2&#xff1b;LATENCY DOCTOR \u5c5e\u4e8e Redis \u5ef6\u8fdf\u76d1\u63a7\u6846\u67b6&#xff0c;\u9700\u8981\u76f8\u5e94\u914d\u7f6e\u548c\u91c7\u6837\u6570\u636e\u624d\u6709\u5206\u6790\u4ef7\u503c\u3002<\/p>\n<p>\u4e0d\u8981\u5728\u751f\u4ea7\u73af\u5883\u968f\u610f\u8c03\u6574\u8bca\u65ad\u914d\u7f6e\u6216\u6267\u884c\u9ad8\u5f00\u9500\u7684\u5168\u91cf\u626b\u63cf\u547d\u4ee4\u3002<\/p>\n<h3>16. \u54ea\u4e9b\u64cd\u4f5c\u7ecf\u5e38\u5e26\u6765\u4e0d\u5fc5\u8981\u7684\u5ef6\u8fdf&#xff1f;<\/h3>\n<p>\u4f8b\u5982\u4f7f\u7528 KEYS * \u5168\u91cf\u904d\u5386\u5927\u91cf Key\u3001\u5bf9\u5de8\u578b Hash \u6267\u884c HGETALL\u3001\u5bf9\u5de8\u578b\u96c6\u5408\u6267\u884c SMEMBERS\u3001\u4e00\u6b21\u8fd4\u56de\u8d85\u5927\u54cd\u5e94\u3001\u5355\u6761\u547d\u4ee4\u5904\u7406\u8fc7\u591a\u5143\u7d20\u3001\u6267\u884c\u8017\u65f6 Lua\u3001\u9891\u7e41\u5efa\u7acb\u8fde\u63a5\u3001\u540c\u6b65\u5904\u7406\u5927\u91cf Key \u5220\u9664&#xff0c;\u4ee5\u53ca\u6301\u4e45\u5316\u8fc7\u7a0b\u4e2d\u7684 fork \u548c\u78c1\u76d8 I\/O \u538b\u529b\u3002<\/p>\n<p>\u66f4\u5408\u7406\u7684\u66ff\u4ee3\u65b9\u6848\u901a\u5e38\u5305\u62ec&#xff1a;\u7528 SCAN \u6e10\u8fdb\u904d\u5386\u3001\u9650\u5236\u5355\u6b21\u8fd4\u56de\u5143\u7d20\u6570\u91cf\u3001\u5206\u9875\u6216\u5206\u6279\u5904\u7406\u3001\u4f7f\u7528 UNLINK \u91ca\u653e\u5927\u96c6\u5408&#xff0c;\u4ee5\u53ca\u5728\u5e94\u7528\u4fa7\u4f7f\u7528\u8fde\u63a5\u6c60\u548c\u8d85\u65f6\u7ba1\u7406\u3002<\/p>\n<h3>17. Pipeline \u4e3a\u4ec0\u4e48\u80fd\u63d0\u9ad8\u6027\u80fd&#xff1f;<\/h3>\n<p>\u666e\u901a\u8bf7\u6c42\u7ecf\u5e38\u662f&#xff1a;\u53d1\u9001\u547d\u4ee4 \u2192 \u7b49\u5f85\u54cd\u5e94 \u2192 \u518d\u53d1\u9001\u4e0b\u4e00\u6761\u3002\u591a\u6b21\u7f51\u7edc\u5f80\u8fd4\u5728\u9ad8\u5ef6\u8fdf\u7f51\u7edc\u4e2d\u6210\u672c\u5f88\u660e\u663e\u3002<\/p>\n<p>Pipeline \u5141\u8bb8\u5ba2\u6237\u7aef\u8fde\u7eed\u53d1\u9001\u591a\u6761\u547d\u4ee4&#xff0c;\u518d\u6279\u91cf\u8bfb\u53d6\u7ed3\u679c&#xff0c;\u51cf\u5c11\u5927\u91cf RTT\u3002<\/p>\n<p>\u4e0d\u8fc7\u8981\u6ce8\u610f&#xff1a;Pipeline \u4e0d\u662f\u4e8b\u52a1&#xff0c;\u4e5f\u4e0d\u4f1a\u81ea\u52a8\u7ed9\u591a\u4e2a\u547d\u4ee4\u63d0\u4f9b\u539f\u5b50\u6027\u3002<\/p>\n<p>\u90e8\u5206\u5ba2\u6237\u7aef\u5e93\u6709\u81ea\u5df1\u7684\u4e8b\u52a1\u9009\u9879&#xff0c;\u4e0d\u80fd\u628a\u67d0\u4e2a\u5e93\u7684\u9ed8\u8ba4\u914d\u7f6e\u5f53\u6210 Redis Pipeline \u8bed\u4e49\u672c\u8eab\u3002<\/p>\n<p>\u6279\u6b21\u4e5f\u4e0d\u80fd\u65e0\u9650\u5927&#xff0c;\u56e0\u4e3a\u670d\u52a1\u5668\u9700\u8981\u4e3a\u5f85\u53d1\u9001\u54cd\u5e94\u4fdd\u7559\u5185\u5b58&#xff0c;\u5e94\u8be5\u5206\u6279\u6267\u884c\u3002<\/p>\n<h3>18. \u628a\u6240\u6709\u95ee\u9898\u653e\u5230\u4e00\u5f20\u6392\u67e5\u8868<\/h3>\n<table>\n<tr>\u89c2\u5bdf\u5230\u7684\u73b0\u8c61\u4f18\u5148\u6000\u7591\u5efa\u8bae\u68c0\u67e5\u4e0e\u4f18\u5316<\/tr>\n<tbody>\n<tr>\n<td>\u5185\u5b58\u9ad8\u3001\u5220\u9664\u67d0\u4e2a Key \u5361\u987f<\/td>\n<td>BigKey<\/td>\n<td>&#8211;memkeys\u3001MEMORY USAGE\u3001\u62c6\u5206\u3001UNLINK<\/td>\n<\/tr>\n<tr>\n<td>\u67d0\u4e2a Cluster \u5206\u7247 CPU \/ \u5e26\u5bbd\u5f02\u5e38\u9ad8<\/td>\n<td>HotKey<\/td>\n<td>\u5355 Key QPS\u3001\u5e94\u7528\u91c7\u6837\u3001\u672c\u5730\u7f13\u5b58\u3001\u8bf7\u6c42\u5408\u5e76<\/td>\n<\/tr>\n<tr>\n<td>\u7f13\u5b58\u503c\u5076\u5c14\u6bd4 MySQL \u65e7<\/td>\n<td>\u53cc\u5199\u7ade\u6001\u3001\u5220\u9664\u5931\u8d25<\/td>\n<td>\u66f4\u65b0\u540e\u5220\u7f13\u5b58\u3001\u91cd\u8bd5\u3001\u7248\u672c\u63a7\u5236\u3001\u53ef\u9760\u5931\u6548\u4e8b\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>Redis \u6ca1\u6709\u6162\u65e5\u5fd7\u4f46\u5ba2\u6237\u7aef P99 \u5f88\u9ad8<\/td>\n<td>\u7f51\u7edc\u3001\u8fde\u63a5\u6c60\u3001\u5927\u54cd\u5e94<\/td>\n<td>\u5e94\u7528\u4fa7\u8017\u65f6\u5206\u6bb5\u3001\u8fde\u63a5\u6c60\u3001\u7f51\u7edc\u4e0e\u6570\u636e\u5927\u5c0f<\/td>\n<\/tr>\n<tr>\n<td>\u6162\u65e5\u5fd7\u7ecf\u5e38\u6709 HGETALL\/SMEMBERS<\/td>\n<td>O(N) \u5927\u96c6\u5408\u64cd\u4f5c<\/td>\n<td>\u5206\u6279\u5206\u9875\u3001SCAN \u5bb6\u65cf<\/td>\n<\/tr>\n<tr>\n<td>\u5f88\u591a\u5c0f\u547d\u4ee4\u4f46\u603b\u4f53\u54cd\u5e94\u6162<\/td>\n<td>RTT\u3001\u8bf7\u6c42\u5f80\u8fd4\u591a<\/td>\n<td>Pipeline\u3001\u6279\u91cf API\u3001\u5408\u7406\u6279\u6b21<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>19. \u6700\u5bb9\u6613\u641e\u9519\u7684\u51e0\u4e2a\u5730\u65b9<\/h3>\n<p>\u7b2c\u4e00&#xff0c;BigKey \u4e3b\u8981\u770b\u5355 Key \u7684\u6570\u636e\u89c4\u6a21&#xff0c;HotKey \u4e3b\u8981\u770b\u8bbf\u95ee\u9891\u7387&#xff0c;\u4e0d\u80fd\u6df7\u4e3a\u4e00\u8c08\u3002<\/p>\n<p>\u7b2c\u4e8c&#xff0c;Redis \u5f88\u5feb&#xff0c;\u4e0d\u4ee3\u8868\u6240\u6709\u547d\u4ee4\u90fd\u6c38\u8fdc\u662f O(1)&#xff0c;\u4e5f\u4e0d\u4ee3\u8868\u4e00\u6b21\u8fd4\u56de\u51e0\u5341 MB \u6570\u636e\u4e0d\u4f1a\u6162\u3002<\/p>\n<p>\u7b2c\u4e09&#xff0c;UNLINK \u662f\u628a\u6602\u8d35\u7684\u5185\u5b58\u91ca\u653e\u4efb\u52a1\u79fb\u5230\u540e\u53f0&#xff0c;\u4e0d\u4ee3\u8868\u540e\u53f0\u6ca1\u6709\u8d44\u6e90\u6210\u672c\u3002<\/p>\n<p>\u7b2c\u56db&#xff0c;SCAN 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