{"id":114303,"date":"2026-10-08T23:48:44","date_gmt":"2026-10-08T15:48:44","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/114303.html"},"modified":"2026-10-08T23:48:44","modified_gmt":"2026-10-08T15:48:44","slug":"redis-%e7%bc%93%e5%ad%98%e7%a9%bf%e9%80%8f%e3%80%81%e7%bc%93%e5%ad%98%e5%87%bb%e7%a9%bf%e3%80%81%e7%bc%93%e5%ad%98%e9%9b%aa%e5%b4%a9%e5%88%b0%e5%ba%95%e6%9c%89%e4%bb%80%e4%b9%88%e5%8c%ba%e5%88%ab","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/114303.html","title":{"rendered":"Redis \u7f13\u5b58\u7a7f\u900f\u3001\u7f13\u5b58\u51fb\u7a7f\u3001\u7f13\u5b58\u96ea\u5d29\u5230\u5e95\u6709\u4ec0\u4e48\u533a\u522b\uff1f"},"content":{"rendered":"<p>\u6211\u4eec\u7528 Redis \u7f13\u5b58 MySQL \u4e2d\u7684\u7528\u6237\u4fe1\u606f&#xff1a;<\/p>\n<p>\u5ba2\u6237\u7aef<br \/>\n   \u2193<br \/>\nRedis<br \/>\n   \u2193 \u7f13\u5b58\u672a\u547d\u4e2d<br \/>\nMySQL<br \/>\n   \u2193<br \/>\n\u67e5\u8be2\u7ed3\u679c\u5199\u5165 Redis<br \/>\n   \u2193<br \/>\n\u8fd4\u56de\u5ba2\u6237\u7aef<\/p>\n<p>\u6b63\u5e38\u60c5\u51b5\u4e0b&#xff0c;\u5927\u90e8\u5206\u8bf7\u6c42\u76f4\u63a5\u4ece Redis \u83b7\u53d6\u6570\u636e&#xff0c;\u53ea\u6709\u7f13\u5b58\u672a\u547d\u4e2d\u65f6\u624d\u9700\u8981\u8bbf\u95ee MySQL\u3002<\/p>\n<p>\u4f46\u5728\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b&#xff0c;\u53ef\u80fd\u51fa\u73b0\u4e09\u4e2a\u975e\u5e38\u7ecf\u5178\u7684\u95ee\u9898&#xff1a;<\/p>\n<p>\u7f13\u5b58\u7a7f\u900f\u3001\u7f13\u5b58\u51fb\u7a7f\u3001\u7f13\u5b58\u96ea\u5d29\u3002<\/p>\n<p>\u867d\u7136\u5b83\u4eec\u6700\u7ec8\u90fd\u53ef\u80fd\u5bfc\u81f4\u5927\u91cf\u8bf7\u6c42\u8fdb\u5165\u6570\u636e\u5e93&#xff0c;\u4f46\u4ea7\u751f\u539f\u56e0\u5e76\u4e0d\u4e00\u6837&#xff0c;\u89e3\u51b3\u65b9\u6848\u4e5f\u4e0d\u540c\u3002<\/p>\n<hr \/>\n<h2>1. \u5148\u7406\u89e3 Cache Aside \u6a21\u5f0f<\/h2>\n<p>\u5728\u6b63\u5f0f\u4ecb\u7ecd\u4e09\u4e2a\u95ee\u9898\u4e4b\u524d&#xff0c;\u5148\u4e86\u89e3\u6700\u5e38\u89c1\u7684\u7f13\u5b58\u4f7f\u7528\u6a21\u5f0f&#xff1a;Cache Aside&#xff08;\u65c1\u8def\u7f13\u5b58&#xff09;\u3002<\/p>\n<p>\u4f8b\u5982\u67e5\u8be2\u7528\u6237&#xff1a;<\/p>\n<p><span class=\"token keyword\">SELECT<\/span> <span class=\"token operator\">*<\/span><br \/>\n<span class=\"token keyword\">FROM<\/span> <span class=\"token keyword\">user<\/span><br \/>\n<span class=\"token keyword\">WHERE<\/span> id <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1001<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u5e94\u7528\u7a0b\u5e8f\u4e00\u822c\u4f1a\u5148\u67e5\u8be2 Redis&#xff1a;<\/p>\n<p>GET user:1001<br \/>\n      \u2193<br \/>\n  \u662f\u5426\u547d\u4e2d&#xff1f;<br \/>\n   \/      \\\\<br \/>\n  \u662f       \u5426<br \/>\n  \u2193        \u2193<br \/>\n\u8fd4\u56de\u7f13\u5b58   \u67e5\u8be2 MySQL<br \/>\n             \u2193<br \/>\n          \u67e5\u5230\u6570\u636e<br \/>\n             \u2193<br \/>\n          \u5199\u5165 Redis<br \/>\n             \u2193<br \/>\n          \u8fd4\u56de\u7ed3\u679c<\/p>\n<p>\u8fd9\u6837\u53ef\u4ee5\u51cf\u5c11\u6570\u636e\u5e93\u67e5\u8be2\u538b\u529b\u3002<\/p>\n<p>\u4f46\u662f\u8fd9\u91cc\u6709\u4e00\u4e2a\u5173\u952e\u95ee\u9898&#xff1a;<\/p>\n<p>\u5982\u679c\u5927\u91cf\u8bf7\u6c42\u540c\u65f6\u65e0\u6cd5\u547d\u4e2d\u7f13\u5b58&#xff0c;\u5c31\u4f1a\u96c6\u4e2d\u8bbf\u95ee MySQL\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\u4e09\u79cd\u7f13\u5b58\u95ee\u9898&#xff0c;\u672c\u8d28\u4e0a\u90fd\u4e0e\u6b64\u6709\u5173\u3002<\/p>\n<hr \/>\n<h2>2. \u4ec0\u4e48\u662f\u7f13\u5b58\u7a7f\u900f&#xff1f;<\/h2>\n<p>\u7f13\u5b58\u7a7f\u900f&#xff08;Cache Penetration&#xff09; \u6307\u7684\u662f&#xff1a;<\/p>\n<p>\u8bf7\u6c42\u7684\u6570\u636e\u5728 Redis \u4e2d\u4e0d\u5b58\u5728&#xff0c;\u5728\u6570\u636e\u5e93\u4e2d\u4e5f\u4e0d\u5b58\u5728&#xff0c;\u5bfc\u81f4\u8bf7\u6c42\u4e0d\u65ad\u7ed5\u8fc7\u7f13\u5b58\u8bbf\u95ee\u6570\u636e\u5e93\u3002<\/p>\n<p>\u5047\u8bbe\u6570\u636e\u5e93\u4e2d\u7684\u7528\u6237 ID \u662f&#xff1a;<\/p>\n<p>1001<br \/>\n1002<br \/>\n1003<br \/>\n&#8230;<\/p>\n<p>\u4f46\u662f\u6709\u4eba\u4e0d\u65ad\u8bf7\u6c42&#xff1a;<\/p>\n<p>GET \/user\/999999999<\/p>\n<p>\u8fd9\u4e2a\u7528\u6237\u6839\u672c\u4e0d\u5b58\u5728\u3002<\/p>\n<p>\u4e8e\u662f&#xff1a;<\/p>\n<p>\u5ba2\u6237\u7aef<br \/>\n   \u2193<br \/>\n\u67e5\u8be2 Redis<br \/>\n   \u2193<br \/>\n\u6ca1\u6709\u7f13\u5b58<br \/>\n   \u2193<br \/>\n\u67e5\u8be2 MySQL<br \/>\n   \u2193<br \/>\n\u6ca1\u6709\u6570\u636e<br \/>\n   \u2193<br \/>\n\u8fd4\u56de\u4e0d\u5b58\u5728<\/p>\n<p>\u4e0b\u4e00\u6b21\u518d\u8bf7\u6c42\u540c\u6837\u7684 ID&#xff1a;<\/p>\n<p>\u5ba2\u6237\u7aef<br \/>\n   \u2193<br \/>\nRedis \u4ecd\u7136\u6ca1\u6709<br \/>\n   \u2193<br \/>\n\u518d\u6b21\u67e5\u8be2 MySQL<br \/>\n   \u2193<br \/>\n\u4ecd\u7136\u6ca1\u6709<\/p>\n<p>\u5982\u679c\u6709\u5927\u91cf\u6076\u610f\u8bf7\u6c42\u4e0d\u65ad\u67e5\u8be2\u4e0d\u5b58\u5728\u7684\u6570\u636e&#xff0c;\u6570\u636e\u5e93\u538b\u529b\u5c31\u53ef\u80fd\u5feb\u901f\u4e0a\u5347\u3002<\/p>\n<p>\u8fd9\u5c31\u662f\u7f13\u5b58\u7a7f\u900f\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f&#xff1a;\u7f13\u5b58\u7a7f\u900f\u4e0d\u662f\u666e\u901a\u7684\u7f13\u5b58\u672a\u547d\u4e2d&#xff0c;\u800c\u662f\u8bf7\u6c42\u7684\u6570\u636e\u5728\u6570\u636e\u5e93\u4e2d\u4e5f\u4e0d\u5b58\u5728&#xff0c;\u5bfc\u81f4\u7f13\u5b58\u65e0\u6cd5\u6b63\u5e38\u53d1\u6325\u4f5c\u7528\u3002<\/p>\n<hr \/>\n<h2>3. \u7f13\u5b58\u7a7f\u900f\u600e\u4e48\u89e3\u51b3&#xff1f;<\/h2>\n<p>\u6700\u5e38\u89c1\u7684\u89e3\u51b3\u529e\u6cd5\u6709\u4e09\u79cd\u3002<\/p>\n<h3>3.1 \u7f13\u5b58\u7a7a\u503c<\/h3>\n<p>\u5047\u8bbe\u67e5\u8be2&#xff1a;<\/p>\n<p><span class=\"token keyword\">SELECT<\/span> <span class=\"token operator\">*<\/span><br \/>\n<span class=\"token keyword\">FROM<\/span> <span class=\"token keyword\">user<\/span><br \/>\n<span class=\"token keyword\">WHERE<\/span> id <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">999999999<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u6570\u636e\u5e93\u8fd4\u56de\u7a7a\u3002<\/p>\n<p>\u6b63\u5e38\u60c5\u51b5\u4e0b&#xff0c;\u5e94\u7528\u76f4\u63a5\u8fd4\u56de\u4e0d\u5b58\u5728\u3002<\/p>\n<p>\u4f46\u6211\u4eec\u4e5f\u53ef\u4ee5\u5728 Redis \u4e2d\u7f13\u5b58\u4e00\u4e2a\u7279\u6b8a\u6807\u8bb0&#xff1a;<\/p>\n<p>SET user:999999999 <span class=\"token string\">&#034;__NULL__&#034;<\/span> EX <span class=\"token number\">120<\/span><\/p>\n<p>\u8fd9\u6837\u4e0b\u6b21\u518d\u67e5\u8be2\u76f8\u540c ID \u65f6&#xff1a;<\/p>\n<p>\u67e5\u8be2 Redis<br \/>\n     \u2193<br \/>\n\u547d\u4e2d __NULL__<br \/>\n     \u2193<br \/>\n\u76f4\u63a5\u8fd4\u56de\u4e0d\u5b58\u5728<\/p>\n<p>\u4e0d\u9700\u8981\u518d\u6b21\u8bbf\u95ee\u6570\u636e\u5e93\u3002<\/p>\n<p>\u6240\u4ee5\u7f13\u5b58\u7a7a\u503c\u7684\u6838\u5fc3\u601d\u60f3\u662f&#xff1a;<\/p>\n<p>\u5373\u4f7f\u6570\u636e\u5e93\u4e2d\u6ca1\u6709\u8fd9\u6761\u8bb0\u5f55&#xff0c;\u4e5f\u5728\u7f13\u5b58\u4e2d\u8bb0\u5f55\u201c\u5df2\u7ecf\u786e\u8ba4\u4e0d\u5b58\u5728\u201d\u3002<\/p>\n<p>\u4e0d\u8fc7\u8981\u6ce8\u610f\u4e24\u4e2a\u95ee\u9898\u3002<\/p>\n<p>\u7b2c\u4e00&#xff0c;\u7a7a\u503c\u7684 TTL \u901a\u5e38\u4e0d\u5e94\u8be5\u592a\u957f&#xff0c;\u56e0\u4e3a\u8fd9\u6761\u6570\u636e\u5c06\u6765\u53ef\u80fd\u88ab\u521b\u5efa\u3002<\/p>\n<p>\u7b2c\u4e8c&#xff0c;\u5fc5\u987b\u80fd\u591f\u533a\u5206\u201cRedis \u4e2d\u6ca1\u6709\u8fd9\u4e2a Key\u201d\u548c\u201cRedis \u4e2d\u7f13\u5b58\u4e86\u4e0d\u5b58\u5728\u6807\u8bb0\u201d\u3002\u4e0d\u80fd\u7b80\u5355\u628a\u4e24\u8005\u90fd\u5f53\u4f5c\u7a7a\u503c\u5904\u7406\u3002<\/p>\n<p>\u7f13\u5b58\u7a7a\u503c\u9002\u5408\u5b9e\u73b0\u7b80\u5355\u3001\u6210\u672c\u8f83\u4f4e\u7684\u573a\u666f&#xff0c;\u4f46\u5982\u679c\u6076\u610f\u8bf7\u6c42\u4f7f\u7528\u6d77\u91cf\u4e0d\u540c ID&#xff0c;\u4e5f\u53ef\u80fd\u5360\u7528\u5f88\u591a\u7f13\u5b58\u7a7a\u95f4\u3002<\/p>\n<h3>3.2 \u5e03\u9686\u8fc7\u6ee4\u5668<\/h3>\n<p>Bloom Filter&#xff08;\u5e03\u9686\u8fc7\u6ee4\u5668&#xff09; \u662f\u4e00\u79cd\u7528\u4e8e\u5feb\u901f\u5224\u65ad\u5143\u7d20\u662f\u5426\u53ef\u80fd\u5b58\u5728\u7684\u6982\u7387\u578b\u6570\u636e\u7ed3\u6784\u3002<\/p>\n<p>\u4f8b\u5982\u7cfb\u7edf\u4e2d\u53ea\u6709\u4ee5\u4e0b\u7528\u6237&#xff1a;<\/p>\n<p>1001<br \/>\n1002<br \/>\n1003<br \/>\n1004<\/p>\n<p>\u6211\u4eec\u5148\u628a\u5408\u6cd5\u7528\u6237 ID \u52a0\u5165\u5e03\u9686\u8fc7\u6ee4\u5668\u3002<\/p>\n<p>\u67e5\u8be2\u65f6&#xff1a;<\/p>\n<p>\u5ba2\u6237\u7aef\u8bf7\u6c42 user:999999999<br \/>\n          \u2193<br \/>\n       Bloom Filter<br \/>\n          \u2193<br \/>\n      \u5224\u65ad\u4e00\u5b9a\u4e0d\u5b58\u5728<br \/>\n          \u2193<br \/>\n       \u76f4\u63a5\u8fd4\u56de<\/p>\n<p>\u8fd9\u6837\u5c31\u8fde Redis \u7f13\u5b58\u67e5\u8be2\u548c MySQL \u67e5\u8be2\u90fd\u53ef\u4ee5\u907f\u514d\u3002<\/p>\n<p>\u4e0d\u8fc7\u5e03\u9686\u8fc7\u6ee4\u5668\u6709\u4e00\u4e2a\u5f88\u91cd\u8981\u7684\u7279\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u5224\u65ad\u4e0d\u5b58\u5728&#xff1a;\u5728\u8fc7\u6ee4\u5668\u6570\u636e\u6b63\u786e\u3001\u5b8c\u6574\u7684\u524d\u63d0\u4e0b&#xff0c;\u53ef\u4ee5\u786e\u5b9a\u4e0d\u5b58\u5728\u3002<\/li>\n<li>\u5224\u65ad\u53ef\u80fd\u5b58\u5728&#xff1a;\u4e0d\u4e00\u5b9a\u771f\u7684\u5b58\u5728&#xff0c;\u56e0\u4e3a\u53ef\u80fd\u53d1\u751f\u54c8\u5e0c\u51b2\u7a81\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u79cd\u8bef\u5224\u53eb False Positive&#xff08;\u5047\u9633\u6027&#xff09;\u3002<\/p>\n<p>\u56e0\u6b64\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u4f5c\u7528\u4e0d\u662f\u76f4\u63a5\u4ee3\u66ff\u6570\u636e\u5e93&#xff0c;\u800c\u662f&#xff1a;<\/p>\n<p>\u5728\u8bbf\u95ee\u7f13\u5b58\u548c\u6570\u636e\u5e93\u4e4b\u524d&#xff0c;\u63d0\u524d\u8fc7\u6ee4\u6389\u5927\u91cf\u786e\u5b9a\u4e0d\u5b58\u5728\u7684\u8bf7\u6c42\u3002<\/p>\n<p>\u53e6\u5916&#xff0c;\u65b0\u589e\u6570\u636e\u65f6\u5fc5\u987b\u53ca\u65f6\u66f4\u65b0\u8fc7\u6ee4\u5668&#xff0c;\u5426\u5219\u65b0\u6570\u636e\u53ef\u80fd\u88ab\u9519\u8bef\u62e6\u622a\u3002\u666e\u901a\u5e03\u9686\u8fc7\u6ee4\u5668\u4e5f\u4e0d\u9002\u5408\u76f4\u63a5\u5220\u9664\u5355\u4e2a\u5143\u7d20&#xff0c;\u6570\u636e\u5220\u9664\u901a\u5e38\u9700\u8981\u989d\u5916\u8bbe\u8ba1\u3002<\/p>\n<h3>3.3 \u53c2\u6570\u6821\u9a8c\u548c\u9650\u6d41<\/h3>\n<p>\u4f8b\u5982\u7528\u6237 ID \u5fc5\u987b\u662f\u6b63\u6574\u6570&#xff0c;\u90a3\u4e48&#xff1a;<\/p>\n<p>GET \/user\/-100<\/p>\n<p>\u8fd9\u79cd\u660e\u663e\u975e\u6cd5\u7684\u8bf7\u6c42&#xff0c;\u53ef\u4ee5\u76f4\u63a5\u5728\u4e1a\u52a1\u5c42\u62d2\u7edd\u3002<\/p>\n<p>\u8fd8\u53ef\u4ee5\u901a\u8fc7 Rate Limiting&#xff08;\u9650\u6d41&#xff09; \u9650\u5236\u5355\u4e2a IP\u3001\u8d26\u53f7\u6216\u63a5\u53e3\u7684\u8bf7\u6c42\u9891\u7387\u3002<\/p>\n<p>\u4f46\u9650\u6d41\u4e3b\u8981\u7528\u4e8e\u4fdd\u62a4\u7cfb\u7edf&#xff0c;\u4e0d\u80fd\u4ece\u6839\u672c\u4e0a\u4ee3\u66ff\u7f13\u5b58\u7a7a\u503c\u548c\u5e03\u9686\u8fc7\u6ee4\u5668\u3002<\/p>\n<hr \/>\n<h2>4. \u4ec0\u4e48\u662f\u7f13\u5b58\u51fb\u7a7f&#xff1f;<\/h2>\n<p>\u7f13\u5b58\u51fb\u7a7f&#xff08;Cache Breakdown&#xff09; \u6307\u7684\u662f&#xff1a;<\/p>\n<p>\u67d0\u4e2a\u8bbf\u95ee\u91cf\u975e\u5e38\u5927\u7684\u70ed\u70b9 Key \u7a81\u7136\u5931\u6548&#xff0c;\u5bfc\u81f4\u5927\u91cf\u5e76\u53d1\u8bf7\u6c42\u540c\u65f6\u67e5\u8be2\u6570\u636e\u5e93\u3002<\/p>\n<p>\u4f8b\u5982\u6211\u4eec\u7f13\u5b58\u4e86\u4e00\u4ef6\u70ed\u95e8\u5546\u54c1&#xff1a;<\/p>\n<p>SET product:1001 <span class=\"token string\">&#034;{&#8230;}&#034;<\/span> EX <span class=\"token number\">1800<\/span><\/p>\n<p>\u5546\u54c1\u6b63\u5728\u53c2\u52a0\u79d2\u6740\u6d3b\u52a8\u3002<\/p>\n<p>\u5047\u8bbe\u8fd9\u4e00\u523b\u6709\u5927\u91cf\u7528\u6237\u540c\u65f6\u8bf7\u6c42&#xff1a;<\/p>\n<p>GET \/product\/1001<\/p>\n<p>\u5e73\u65f6&#xff1a;<\/p>\n<p>\u5927\u91cf\u8bf7\u6c42<br \/>\n    \u2193<br \/>\nRedis product:1001<br \/>\n    \u2193<br \/>\n\u76f4\u63a5\u8fd4\u56de<\/p>\n<p>\u4f46\u662f\u5f53 product:1001 \u7a81\u7136\u8fc7\u671f&#xff1a;<\/p>\n<p>           \u70ed\u70b9 Key \u8fc7\u671f<br \/>\n                  \u2193<br \/>\n    \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n    \u2193             \u2193             \u2193<br \/>\n \u8bf7\u6c42 A         \u8bf7\u6c42 B        \u8bf7\u6c42 C<br \/>\n    \u2193             \u2193             \u2193<br \/>\n Redis Miss    Redis Miss    Redis Miss<br \/>\n    \u2193             \u2193             \u2193<br \/>\n    \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br \/>\n                  \u2193<br \/>\n                MySQL<\/p>\n<p>\u5927\u91cf\u8bf7\u6c42\u540c\u65f6\u8fdb\u5165\u6570\u636e\u5e93\u3002<\/p>\n<p>\u539f\u672c Redis \u627f\u62c5\u7684\u9ad8\u5e76\u53d1\u6d41\u91cf&#xff0c;\u7a81\u7136\u7531 MySQL \u627f\u62c5&#xff0c;\u53ef\u80fd\u9020\u6210\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u8017\u5c3d\u3001\u54cd\u5e94\u53d8\u6162\u751a\u81f3\u670d\u52a1\u4e0d\u53ef\u7528\u3002<\/p>\n<p>\u8fd9\u5c31\u662f\u7f13\u5b58\u51fb\u7a7f\u3002<\/p>\n<p>\u7f13\u5b58\u51fb\u7a7f\u7684\u5173\u952e\u662f&#xff1a;\u4e00\u4e2a\u70ed\u70b9 Key \u5931\u6548\u3002<\/p>\n<p>\u800c\u7f13\u5b58\u7a7f\u900f\u7684\u5173\u952e\u662f&#xff1a;\u6570\u636e\u672c\u8eab\u5c31\u4e0d\u5b58\u5728\u3002<\/p>\n<hr \/>\n<h2>5. \u7f13\u5b58\u51fb\u7a7f\u600e\u4e48\u89e3\u51b3&#xff1f;<\/h2>\n<h3>5.1 \u4e92\u65a5\u9501<\/h3>\n<p>\u6700\u7ecf\u5178\u7684\u65b9\u6848\u5c31\u662f\u52a0\u9501\u3002<\/p>\n<p>\u601d\u8def\u5f88\u7b80\u5355&#xff1a;<\/p>\n<p>\u7f13\u5b58\u5931\u6548\u4ee5\u540e&#xff0c;\u53ea\u5141\u8bb8\u4e00\u4e2a\u8bf7\u6c42\u8d1f\u8d23\u67e5\u8be2\u6570\u636e\u5e93\u5e76\u91cd\u5efa\u7f13\u5b58&#xff0c;\u5176\u4ed6\u8bf7\u6c42\u7b49\u5f85\u3002<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>\u70ed\u70b9 Key \u5931\u6548<br \/>\n      \u2193<br \/>\n\u5927\u91cf\u5e76\u53d1\u8bf7\u6c42<br \/>\n      \u2193<br \/>\n\u5c1d\u8bd5\u83b7\u53d6\u4e92\u65a5\u9501<br \/>\n      \u2193<br \/>\n  \u662f\u5426\u83b7\u5f97\u9501&#xff1f;<br \/>\n   \/        \\\\<br \/>\n  \u662f         \u5426<br \/>\n  \u2193          \u2193<br \/>\n\u67e5\u8be2 MySQL  \u7b49\u5f85\u6216\u7a0d\u540e\u91cd\u8bd5<br \/>\n  \u2193          \u2193<br \/>\n\u91cd\u5efa Redis  \u518d\u6b21\u67e5\u8be2 Redis<br \/>\n  \u2193<br \/>\n\u91ca\u653e\u9501<\/p>\n<p>Redis \u53ef\u4ee5\u901a\u8fc7&#xff1a;<\/p>\n<p>SET lock:product:1001 requestToken NX PX <span class=\"token number\">5000<\/span><\/p>\n<p>\u5c1d\u8bd5\u83b7\u53d6\u9501\u3002<\/p>\n<p>\u8fd9\u91cc\u7684 NX \u8868\u793a Key \u4e0d\u5b58\u5728\u65f6\u624d\u8bbe\u7f6e&#xff0c;PX 5000 \u8868\u793a\u8bbe\u7f6e 5 \u79d2\u8fc7\u671f\u65f6\u95f4&#xff0c;requestToken \u5219\u5e94\u662f\u6bcf\u6b21\u52a0\u9501\u64cd\u4f5c\u72ec\u6709\u7684\u6807\u8bc6\u3002<\/p>\n<p>\u4f46\u662f\u8fd9\u91cc\u9700\u8981\u6ce8\u610f&#xff1a;<\/p>\n<li>\u83b7\u53d6\u9501\u4ee5\u540e&#xff0c;\u8fd8\u9700\u8981\u518d\u6b21\u68c0\u67e5\u7f13\u5b58&#xff0c;\u56e0\u4e3a\u53ef\u80fd\u5df2\u6709\u5176\u4ed6\u8bf7\u6c42\u5b8c\u6210\u4e86\u7f13\u5b58\u91cd\u5efa\u3002<\/li>\n<li>\u91ca\u653e\u9501\u65f6\u5fc5\u987b\u6821\u9a8c\u9501\u662f\u5426\u4ecd\u7136\u5c5e\u4e8e\u81ea\u5df1&#xff0c;\u4e0d\u80fd\u76f4\u63a5\u65e0\u6761\u4ef6 DEL\u3002<\/li>\n<li>\u9501\u8fc7\u671f\u65f6\u95f4\u5fc5\u987b\u8003\u8651\u6570\u636e\u5e93\u67e5\u8be2\u8017\u65f6&#xff0c;\u9632\u6b62\u4efb\u52a1\u6ca1\u6267\u884c\u5b8c\u9501\u5c31\u5931\u6548\u3002<\/li>\n<li>\u6ca1\u6709\u83b7\u53d6\u5230\u9501\u7684\u8bf7\u6c42\u4e0d\u80fd\u65e0\u9650\u7b49\u5f85&#xff0c;\u8fd8\u9700\u8981\u8d85\u65f6\u3001\u91cd\u8bd5\u6216\u964d\u7ea7\u673a\u5236\u3002<\/li>\n<p>\u5177\u4f53\u7684\u5b89\u5168\u91ca\u653e\u3001Lua \u811a\u672c\u548c\u9501\u7eed\u671f&#xff0c;\u6211\u4eec\u7559\u5230\u540e\u9762\u7684 Redis \u5206\u5e03\u5f0f\u9501\u4e13\u9898\u3002<\/p>\n<h3>5.2 \u903b\u8f91\u8fc7\u671f<\/h3>\n<p>\u8fd8\u6709\u4e00\u79cd\u65b9\u5f0f\u53eb Logical Expiration&#xff08;\u903b\u8f91\u8fc7\u671f&#xff09;\u3002<\/p>\n<p>\u666e\u901a\u7f13\u5b58\u4f9d\u8d56 Redis \u7684 TTL&#xff1a;<\/p>\n<p>SET product:1001 <span class=\"token string\">&#034;{&#8230;}&#034;<\/span> EX <span class=\"token number\">1800<\/span><\/p>\n<p>\u65f6\u95f4\u5230\u4e86&#xff0c;Key \u5c31\u4f1a\u5728\u903b\u8f91\u4e0a\u5931\u6548&#xff0c;\u540e\u7eed\u53ef\u80fd\u88ab\u5220\u9664\u3002<\/p>\n<p>\u903b\u8f91\u8fc7\u671f\u5219\u53ef\u4ee5\u628a\u8fc7\u671f\u65f6\u95f4\u76f4\u63a5\u653e\u5230\u7f13\u5b58\u5bf9\u8c61\u5185\u90e8&#xff1a;<\/p>\n<p><span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token string-property property\">&#034;data&#034;<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token string-property property\">&#034;id&#034;<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">1001<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token string-property property\">&#034;name&#034;<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#034;\u70ed\u95e8\u5546\u54c1&#034;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token string-property property\">&#034;expireAt&#034;<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#034;2026-10-08T23:30:00&#034;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>Redis \u4e2d\u7684\u7f13\u5b58 Key \u53ef\u4ee5\u4e0d\u8bbe\u7f6e\u76f8\u540c\u7684\u7269\u7406 TTL&#xff0c;\u7531\u5e94\u7528\u7a0b\u5e8f\u81ea\u5df1\u5224\u65ad expireAt\u3002<\/p>\n<p>\u5982\u679c\u6ca1\u6709\u8fc7\u671f&#xff0c;\u76f4\u63a5\u8fd4\u56de\u3002<\/p>\n<p>\u5982\u679c\u903b\u8f91\u4e0a\u5df2\u7ecf\u8fc7\u671f&#xff1a;<\/p>\n<p>\u67e5\u8be2 Redis<br \/>\n     \u2193<br \/>\n\u53d1\u73b0\u903b\u8f91\u8fc7\u671f<br \/>\n     \u2193<br \/>\n\u8fd4\u56de\u65e7\u6570\u636e<br \/>\n     &#043;<br \/>\n\u89e6\u53d1\u540e\u53f0\u7f13\u5b58\u91cd\u5efa<br \/>\n     \u2193<br \/>\n\u66f4\u65b0 Redis<\/p>\n<p>\u8fd9\u6837\u70ed\u70b9\u7f13\u5b58\u4e0d\u4f1a\u56e0\u4e3a TTL \u5230\u671f\u5c31\u7acb\u523b\u6d88\u5931&#xff0c;\u5927\u91cf\u8bf7\u6c42\u4ecd\u7136\u53ef\u4ee5\u8bfb\u53d6\u65e7\u6570\u636e\u3002<\/p>\n<p>\u4f18\u70b9\u662f\u53ef\u4ee5\u964d\u4f4e\u6570\u636e\u5e93\u77ac\u65f6\u538b\u529b\u3002<\/p>\n<p>\u7f3a\u70b9\u4e5f\u5f88\u660e\u663e&#xff1a;<\/p>\n<p>\u53ef\u80fd\u8fd4\u56de\u8fc7\u671f\u6570\u636e&#xff0c;\u5b58\u5728\u77ed\u65f6\u95f4\u7684\u6570\u636e\u4e0d\u4e00\u81f4\u3002<\/p>\n<p>\u6240\u4ee5\u903b\u8f91\u8fc7\u671f\u9002\u5408\u5546\u54c1\u4ecb\u7ecd\u3001\u6392\u884c\u699c\u7b49\u5141\u8bb8\u4e00\u5b9a\u5ef6\u8fdf\u7684\u573a\u666f&#xff0c;\u4e0d\u9002\u5408\u8981\u6c42\u5f3a\u4e00\u81f4\u7684\u5b9e\u65f6\u5e93\u5b58\u3001\u8d26\u6237\u4f59\u989d\u7b49\u5173\u952e\u6570\u636e\u3002<\/p>\n<p>\u6b64\u5916&#xff0c;\u8fd8\u8981\u8003\u8651\u9996\u6b21\u6ca1\u6709\u7f13\u5b58\u3001\u540e\u53f0\u5237\u65b0\u5931\u8d25\u548c\u5f02\u5e38\u91cd\u8bd5\u7b49\u60c5\u51b5&#xff0c;\u4e0d\u80fd\u8ba4\u4e3a\u903b\u8f91\u8fc7\u671f\u53ef\u4ee5\u89e3\u51b3\u6240\u6709\u7f13\u5b58\u95ee\u9898\u3002<\/p>\n<h3>5.3 \u70ed\u70b9\u6570\u636e\u63d0\u524d\u5237\u65b0<\/h3>\n<p>\u5bf9\u4e8e\u53ef\u4ee5\u63d0\u524d\u9884\u6d4b\u7684\u70ed\u70b9 Key&#xff0c;\u8fd8\u53ef\u4ee5\u5728\u8fc7\u671f\u4e4b\u524d\u4e3b\u52a8\u5237\u65b0\u7f13\u5b58\u3002<\/p>\n<p>\u4f8b\u5982\u67d0\u4e2a\u70ed\u95e8\u5546\u54c1\u7f13\u5b58\u7684 TTL \u4e3a 30 \u5206\u949f&#xff0c;\u53ef\u4ee5\u901a\u8fc7\u540e\u53f0\u4efb\u52a1\u63d0\u524d\u5237\u65b0&#xff0c;\u5c3d\u91cf\u907f\u514d\u5b83\u5728\u9ad8\u6d41\u91cf\u671f\u95f4\u5931\u6548\u3002<\/p>\n<p>\u8fd9\u4e5f\u53eb\u7f13\u5b58\u9884\u70ed\u6216\u4e3b\u52a8\u5237\u65b0\u3002<\/p>\n<hr \/>\n<h2>6. \u4ec0\u4e48\u662f\u7f13\u5b58\u96ea\u5d29&#xff1f;<\/h2>\n<p>\u7f13\u5b58\u96ea\u5d29&#xff08;Cache Avalanche&#xff09; \u6307\u7684\u662f&#xff1a;<\/p>\n<p>\u5927\u91cf\u7f13\u5b58\u540c\u65f6\u5931\u6548&#xff0c;\u6216\u8005\u7f13\u5b58\u670d\u52a1\u6574\u4f53\u4e0d\u53ef\u7528&#xff0c;\u5bfc\u81f4\u5927\u91cf\u8bf7\u6c42\u96c6\u4e2d\u8fdb\u5165\u6570\u636e\u5e93\u3002<\/p>\n<p>\u6ce8\u610f&#xff0c;\u5b83\u548c\u7f13\u5b58\u51fb\u7a7f\u5f88\u50cf&#xff0c;\u4f46\u533a\u522b\u5728\u4e8e\u5f71\u54cd\u8303\u56f4\u3002<\/p>\n<p>\u7f13\u5b58\u51fb\u7a7f\u4e00\u822c\u662f&#xff1a;<\/p>\n<p>\u4e00\u4e2a\u70ed\u70b9 Key \u5931\u6548\u3002<\/p>\n<p>\u7f13\u5b58\u96ea\u5d29\u4e00\u822c\u662f&#xff1a;<\/p>\n<p>\u5927\u91cf\u4e0d\u540c Key \u540c\u65f6\u5931\u6548&#xff0c;\u6216\u8005 Redis \u6574\u4f53\u65e0\u6cd5\u63d0\u4f9b\u670d\u52a1\u3002<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>product:1001<br \/>\nproduct:1002<br \/>\nproduct:1003<br \/>\nproduct:1004<br \/>\nproduct:1005<br \/>\n&#8230;<\/p>\n<p>\u8fd9\u4e9b\u5546\u54c1\u7f13\u5b58\u5168\u90e8\u8bbe\u7f6e&#xff1a;<\/p>\n<p>EXPIRE <span class=\"token punctuation\">..<\/span>. <span class=\"token number\">1800<\/span><\/p>\n<p>\u5982\u679c\u5b83\u4eec\u5728\u76f8\u8fd1\u65f6\u95f4\u521b\u5efa&#xff0c;\u5c31\u53ef\u80fd\u5728 30 \u5206\u949f\u540e\u96c6\u4e2d\u5931\u6548\u3002<\/p>\n<p>\u4e8e\u662f&#xff1a;<\/p>\n<p>\u5927\u91cf Key \u540c\u65f6\u8fc7\u671f<br \/>\n         \u2193<br \/>\n Redis \u7f13\u5b58\u547d\u4e2d\u7387\u9aa4\u964d<br \/>\n         \u2193<br \/>\n  \u5927\u91cf\u8bf7\u6c42\u67e5\u8be2 MySQL<br \/>\n         \u2193<br \/>\n \u6570\u636e\u5e93\u538b\u529b\u6025\u5267\u4e0a\u5347<\/p>\n<p>\u8fd9\u5c31\u662f\u7f13\u5b58\u96ea\u5d29\u7684\u4e00\u79cd\u5178\u578b\u573a\u666f\u3002<\/p>\n<p>\u8fd8\u6709\u4e00\u79cd\u60c5\u51b5\u662f Redis \u5b9e\u4f8b\u7a81\u7136\u5b95\u673a\u3002<\/p>\n<p>\u539f\u672c\u4e0d\u540c Key \u7684\u8bf7\u6c42\u90fd\u80fd\u547d\u4e2d\u7f13\u5b58&#xff0c;\u73b0\u5728\u6574\u4e2a Redis \u4e0d\u53ef\u7528\u4e86&#xff0c;\u6d41\u91cf\u5c31\u53ef\u80fd\u96c6\u4e2d\u56de\u843d\u5230\u6570\u636e\u5e93\u3002<\/p>\n<hr \/>\n<h2>7. \u7f13\u5b58\u96ea\u5d29\u600e\u4e48\u89e3\u51b3&#xff1f;<\/h2>\n<h3>7.1 TTL \u589e\u52a0\u968f\u673a\u503c<\/h3>\n<p>\u5047\u8bbe\u6709\u4e00\u6279\u5546\u54c1\u6570\u636e&#xff0c;\u5982\u679c\u5168\u90e8\u8bbe\u7f6e&#xff1a;<\/p>\n<p>TTL &#061; 1800 \u79d2<\/p>\n<p>\u5c31\u53ef\u80fd\u4e00\u8d77\u8fc7\u671f\u3002<\/p>\n<p>\u56e0\u6b64\u53ef\u4ee5\u6539\u6210&#xff1a;<\/p>\n<p>TTL &#061; 1800 &#043; random(0, 300)<\/p>\n<p>\u8fd9\u6837\u6bcf\u4e2a Key \u7684\u8fc7\u671f\u65f6\u95f4\u4f1a\u5206\u6563\u5728\u4e0d\u540c\u65f6\u95f4\u70b9\u3002<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>product:1001 \u2192 1812 \u79d2<br \/>\nproduct:1002 \u2192 1935 \u79d2<br \/>\nproduct:1003 \u2192 2078 \u79d2<br \/>\nproduct:1004 \u2192 1840 \u79d2<\/p>\n<p>\u5927\u91cf Key \u5c31\u4e0d\u4f1a\u5728\u540c\u4e00\u65f6\u523b\u96c6\u4e2d\u5931\u6548\u3002<\/p>\n<p>\u6240\u4ee5&#xff1a;<\/p>\n<p>\u968f\u673a TTL \u4e3b\u8981\u7528\u4e8e\u7f13\u89e3\u5927\u91cf Key \u540c\u65f6\u8fc7\u671f\u9020\u6210\u7684\u96ea\u5d29\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f&#xff0c;\u5b83\u4e0d\u80fd\u4fdd\u8bc1\u5355\u4e2a\u70ed\u70b9 Key \u4e0d\u4f1a\u51fb\u7a7f&#xff0c;\u4e5f\u4e0d\u80fd\u89e3\u51b3 Redis \u6574\u4f53\u5b95\u673a\u3002<\/p>\n<h3>7.2 Redis \u9ad8\u53ef\u7528<\/h3>\n<p>\u5982\u679c\u662f Redis \u670d\u52a1\u6574\u4f53\u4e0d\u53ef\u7528&#xff0c;\u968f\u673a TTL \u663e\u7136\u6ca1\u6709\u4efb\u4f55\u4f5c\u7528\u3002<\/p>\n<p>\u8fd9\u79cd\u60c5\u51b5\u5e94\u8be5\u4ece Redis \u67b6\u6784\u5165\u624b\u3002<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>\u4e3b\u4ece\u590d\u5236<\/p>\n<p>Sentinel&#xff08;\u54e8\u5175&#xff09;<\/p>\n<p>Redis Cluster<\/p>\n<p>\u901a\u8fc7\u526f\u672c\u548c\u6545\u969c\u8f6c\u79fb\u7b49\u673a\u5236\u63d0\u9ad8\u53ef\u7528\u6027\u3002<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>      Redis Master<br \/>\n         \/    \\\\<br \/>\n        \u2193      \u2193<br \/>\n     Replica  Replica<\/p>\n<p>\u5982\u679c\u4e3b\u8282\u70b9\u6545\u969c&#xff0c;\u53ef\u4ee5\u901a\u8fc7\u76f8\u5e94\u7684\u9ad8\u53ef\u7528\u673a\u5236\u9009\u62e9\u65b0\u4e3b\u8282\u70b9\u3002<\/p>\n<p>\u4f46\u9ad8\u53ef\u7528\u4e0d\u7b49\u4e8e\u6c38\u4e0d\u5b95\u673a\u3002\u6545\u969c\u8f6c\u79fb\u901a\u5e38\u5b58\u5728\u68c0\u6d4b\u548c\u6062\u590d\u65f6\u95f4&#xff0c;\u5e94\u7528\u4fa7\u4ecd\u7136\u9700\u8981\u8003\u8651 Redis \u6682\u65f6\u4e0d\u53ef\u7528\u7684\u60c5\u51b5\u3002<\/p>\n<h3>7.3 \u9650\u6d41\u3001\u7194\u65ad\u548c\u964d\u7ea7<\/h3>\n<p>\u5982\u679c Redis \u5df2\u7ecf\u4e0d\u53ef\u7528&#xff0c;\u77ed\u65f6\u95f4\u53c8\u65e0\u6cd5\u6062\u590d&#xff0c;\u6570\u636e\u5e93\u53ef\u80fd\u6839\u672c\u65e0\u6cd5\u627f\u53d7\u5168\u90e8\u6d41\u91cf\u3002<\/p>\n<p>\u8fd9\u65f6\u5019\u9700\u8981\u9650\u5236\u6570\u636e\u5e93\u538b\u529b\u3002<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>\u5927\u91cf\u8bf7\u6c42<br \/>\n   \u2193<br \/>\n\u670d\u52a1\u7aef\u9650\u6d41<br \/>\n   \u2193<br \/>\n\u53ea\u5141\u8bb8\u90e8\u5206\u8bf7\u6c42\u8bbf\u95ee\u6570\u636e\u5e93<br \/>\n   \u2193<br \/>\n\u5176\u4ed6\u8bf7\u6c42\u8fd4\u56de\u964d\u7ea7\u7ed3\u679c<\/p>\n<p>\u964d\u7ea7\u53ef\u4ee5\u6839\u636e\u4e1a\u52a1\u8bbe\u8ba1\u6210&#xff1a;<\/p>\n<p>\u8fd4\u56de\u7a0d\u65e7\u7684\u6570\u636e\u3001\u8fd4\u56de\u9ed8\u8ba4\u5185\u5bb9\u3001\u63d0\u793a\u7a0d\u540e\u91cd\u8bd5&#xff0c;\u6216\u8005\u6682\u65f6\u5173\u95ed\u975e\u6838\u5fc3\u529f\u80fd\u3002<\/p>\n<p>\u6838\u5fc3\u601d\u60f3\u662f&#xff1a;<\/p>\n<p>\u5b81\u53ef\u8ba9\u90e8\u5206\u975e\u5173\u952e\u8bf7\u6c42\u5931\u8d25&#xff0c;\u4e5f\u4e0d\u8981\u8ba9\u6240\u6709\u8bf7\u6c42\u628a\u6570\u636e\u5e93\u5f7b\u5e95\u538b\u57ae\u3002<\/p>\n<h3>7.4 \u591a\u7ea7\u7f13\u5b58\u548c\u9884\u70ed<\/h3>\n<p>\u5bf9\u4e8e\u7279\u522b\u91cd\u8981\u7684\u70ed\u70b9\u6570\u636e&#xff0c;\u53ef\u4ee5\u8fdb\u4e00\u6b65\u91c7\u7528&#xff1a;<\/p>\n<p>\u5ba2\u6237\u7aef\u8bf7\u6c42<br \/>\n     \u2193<br \/>\n\u672c\u5730\u7f13\u5b58&#xff08;\u5982 Caffeine&#xff09;<br \/>\n     \u2193 \u672a\u547d\u4e2d<br \/>\nRedis<br \/>\n     \u2193 \u672a\u547d\u4e2d<br \/>\nMySQL<\/p>\n<p>\u8fd9\u6837\u5373\u4f7f Redis \u77ed\u65f6\u95f4\u4e0d\u53ef\u7528&#xff0c;\u672c\u5730\u7f13\u5b58\u4ecd\u7136\u53ef\u80fd\u627f\u62c5\u4e00\u90e8\u5206\u8bf7\u6c42\u3002<\/p>\n<p>\u4f46\u672c\u5730\u7f13\u5b58\u4e5f\u6709\u5bb9\u91cf\u9650\u5236\u548c\u6570\u636e\u4e00\u81f4\u6027\u95ee\u9898&#xff0c;\u4e0d\u80fd\u76f4\u63a5\u4ee3\u66ff Redis\u3002<\/p>\n<p>\u53e6\u5916&#xff0c;\u7cfb\u7edf\u542f\u52a8\u3001\u5927\u4fc3\u6d3b\u52a8\u6216 Redis \u6545\u969c\u6062\u590d\u540e&#xff0c;\u53ef\u4ee5\u5148\u8fdb\u884c\u7f13\u5b58\u9884\u70ed&#xff0c;\u907f\u514d\u6240\u6709\u8bf7\u6c42\u96c6\u4e2d\u8fdb\u884c\u7b2c\u4e00\u6b21\u6570\u636e\u5e93\u67e5\u8be2\u3002<\/p>\n<hr \/>\n<h2>8. \u4e09\u79cd\u7f13\u5b58\u95ee\u9898\u653e\u5728\u4e00\u8d77\u6bd4\u8f83<\/h2>\n<table>\n<tr>\u5bf9\u6bd4\u7f13\u5b58\u7a7f\u900f\u7f13\u5b58\u51fb\u7a7f\u7f13\u5b58\u96ea\u5d29<\/tr>\n<tbody>\n<tr>\n<td>\u6570\u636e\u5e93\u662f\u5426\u5b58\u5728\u6570\u636e<\/td>\n<td>\u4e0d\u5b58\u5728<\/td>\n<td>\u901a\u5e38\u5b58\u5728<\/td>\n<td>\u901a\u5e38\u5b58\u5728<\/td>\n<\/tr>\n<tr>\n<td>\u7f13\u5b58\u53d1\u751f\u4ec0\u4e48<\/td>\n<td>\u67e5\u4e0d\u5230\u6570\u636e<\/td>\n<td>\u5355\u4e2a\u70ed\u70b9 Key \u5931\u6548<\/td>\n<td>\u5927\u91cf Key \u5931\u6548\u6216 Redis \u4e0d\u53ef\u7528<\/td>\n<\/tr>\n<tr>\n<td>\u4e3b\u8981\u95ee\u9898<\/td>\n<td>\u65e0\u6548\u67e5\u8be2\u6301\u7eed\u843d\u5230\u6570\u636e\u5e93<\/td>\n<td>\u70ed\u70b9\u8bf7\u6c42\u77ac\u65f6\u96c6\u4e2d<\/td>\n<td>\u5927\u8303\u56f4\u8bf7\u6c42\u96c6\u4e2d<\/td>\n<\/tr>\n<tr>\n<td>\u5178\u578b\u89e3\u51b3\u65b9\u6cd5<\/td>\n<td>\u7f13\u5b58\u7a7a\u503c\u3001\u5e03\u9686\u8fc7\u6ee4\u5668<\/td>\n<td>\u4e92\u65a5\u9501\u3001\u903b\u8f91\u8fc7\u671f<\/td>\n<td>\u968f\u673a TTL\u3001\u9ad8\u53ef\u7528\u3001\u9650\u6d41\u964d\u7ea7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u53ef\u4ee5\u901a\u8fc7\u4e09\u4e2a\u573a\u666f\u5feb\u901f\u5224\u65ad\u3002<\/p>\n<p>\u573a\u666f\u4e00&#xff1a; \u7528\u6237\u4e0d\u65ad\u8bf7\u6c42\u4e0d\u5b58\u5728\u7684 user:999999999&#xff0c;Redis \u548c MySQL \u90fd\u6ca1\u6709\u6570\u636e&#xff0c;\u8fd9\u662f\u7f13\u5b58\u7a7f\u900f\u3002<\/p>\n<p>\u573a\u666f\u4e8c&#xff1a; \u4e00\u4e2a\u70ed\u95e8\u5546\u54c1 product:1001 \u7a81\u7136\u8fc7\u671f&#xff0c;\u51e0\u5343\u4e2a\u5e76\u53d1\u8bf7\u6c42\u540c\u65f6\u67e5\u8be2 MySQL&#xff0c;\u8fd9\u662f\u7f13\u5b58\u51fb\u7a7f\u3002<\/p>\n<p>\u573a\u666f\u4e09&#xff1a; \u51e0\u4e07\u4e2a\u5546\u54c1\u7f13\u5b58\u540c\u4e00\u65f6\u95f4\u8fc7\u671f&#xff0c;\u6216\u8005 Redis \u6574\u4f53\u5b95\u673a&#xff0c;\u5927\u91cf\u4e0d\u540c\u8bf7\u6c42\u540c\u65f6\u8bbf\u95ee MySQL&#xff0c;\u8fd9\u662f\u7f13\u5b58\u96ea\u5d29\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f&#xff0c;\u4e09\u79cd\u95ee\u9898\u5728\u771f\u5b9e\u7cfb\u7edf\u4e2d\u53ef\u80fd\u540c\u65f6\u51fa\u73b0\u3002\u4f8b\u5982\u96ea\u5d29\u671f\u95f4&#xff0c;\u67d0\u4e9b\u7279\u522b\u70ed\u95e8\u7684 Key \u4e5f\u4f1a\u53d1\u751f\u7c7b\u4f3c\u51fb\u7a7f\u7684\u5e76\u53d1\u91cd\u5efa\u95ee\u9898\u3002<\/p>\n<hr \/>\n<h2>9. \u4e3a\u4ec0\u4e48\u4e0d\u80fd\u6240\u6709\u95ee\u9898\u90fd\u7528\u4e92\u65a5\u9501\u89e3\u51b3&#xff1f;<\/h2>\n<p>\u6709\u4eba\u53ef\u80fd\u4f1a\u60f3&#xff1a;<\/p>\n<p>\u65e2\u7136\u52a0\u9501\u80fd\u591f\u907f\u514d\u591a\u4e2a\u8bf7\u6c42\u540c\u65f6\u67e5\u8be2\u6570\u636e\u5e93&#xff0c;\u90a3\u6240\u6709\u7f13\u5b58\u672a\u547d\u4e2d\u7684\u60c5\u51b5\u90fd\u52a0\u9501\u4e0d\u5c31\u884c\u4e86\u5417&#xff1f;<\/p>\n<p>\u5b9e\u9645\u4e0a\u6ca1\u6709\u8fd9\u4e48\u7b80\u5355\u3002<\/p>\n<p>\u4f8b\u5982\u7f13\u5b58\u7a7f\u900f&#xff1a;<\/p>\n<p>user:9999991<br \/>\nuser:9999992<br \/>\nuser:9999993<br \/>\n&#8230;<\/p>\n<p>\u5982\u679c\u6bcf\u6b21\u8bf7\u6c42\u7684\u90fd\u662f\u4e0d\u540c\u7684\u4e0d\u5b58\u5728 Key&#xff0c;\u90a3\u4e48\u5373\u4f7f\u6309 Key \u52a0\u9501&#xff0c;\u4e5f\u65e0\u6cd5\u963b\u6b62\u5927\u91cf\u4e0d\u540c\u8bf7\u6c42\u8fdb\u5165\u6570\u636e\u5e93\u3002<\/p>\n<p>\u8fd9\u79cd\u60c5\u51b5\u66f4\u9002\u5408\u53c2\u6570\u6821\u9a8c\u3001\u7f13\u5b58\u7a7a\u503c\u6216\u8005\u5e03\u9686\u8fc7\u6ee4\u5668\u3002<\/p>\n<p>\u800c\u7f13\u5b58\u96ea\u5d29\u5982\u679c\u662f Redis \u6574\u4f53\u5b95\u673a&#xff0c;\u4f9d\u8d56 Redis \u5b9e\u73b0\u7684\u5206\u5e03\u5f0f\u9501\u672c\u8eab\u4e5f\u53ef\u80fd\u4e0d\u53ef\u7528\u3002<\/p>\n<p>\u6240\u4ee5&#xff1a;<\/p>\n<p>\u4e0d\u540c\u7f13\u5b58\u95ee\u9898\u5fc5\u987b\u6839\u636e\u4ea7\u751f\u539f\u56e0\u9009\u62e9\u89e3\u51b3\u65b9\u6848&#xff0c;\u800c\u4e0d\u662f\u53ea\u8bb0\u4f4f\u201c\u7f13\u5b58\u5f02\u5e38\u5c31\u52a0\u9501\u201d\u3002<\/p>\n<hr \/>\n<h2>10. \u5b9e\u9645\u9879\u76ee\u4e2d\u600e\u4e48\u7ec4\u5408\u89e3\u51b3&#xff1f;<\/h2>\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u5546\u54c1\u8be6\u60c5\u63a5\u53e3&#xff1a;<\/p>\n<p>GET \/product\/{id}<\/p>\n<p>\u53ef\u4ee5\u8003\u8651\u8bbe\u8ba1\u6210&#xff1a;<\/p>\n<p>               \u5ba2\u6237\u7aef\u8bf7\u6c42<br \/>\n                    \u2193<br \/>\n              \u53c2\u6570\u5408\u6cd5\u6027\u6821\u9a8c<br \/>\n                    \u2193<br \/>\n          Bloom Filter&#xff08;\u6309\u9700\u4f7f\u7528&#xff09;<br \/>\n                    \u2193<br \/>\n               \u67e5\u8be2 Redis<br \/>\n                    \u2193<br \/>\n                \u662f\u5426\u547d\u4e2d&#xff1f;<br \/>\n                \/      \\\\<br \/>\n               \u662f       \u5426<br \/>\n               \u2193         \u2193<br \/>\n            \u8fd4\u56de\u6570\u636e   \u5224\u65ad\u662f\u5426\u70ed\u70b9<br \/>\n                         \u2193<br \/>\n                \u534f\u8c03\u7f13\u5b58\u91cd\u5efa<br \/>\n                         \u2193<br \/>\n                     \u67e5\u8be2 MySQL<br \/>\n                         \u2193<br \/>\n                  \u67e5\u5230\u6570\u636e&#xff1f;<br \/>\n                   \/      \\\\<br \/>\n                  \u662f       \u5426<br \/>\n                  \u2193         \u2193<br \/>\n              \u5199\u5165\u7f13\u5b58   \u7f13\u5b58\u7a7a\u503c<br \/>\n                  \\\\         \/<br \/>\n                   \\\\       \/<br \/>\n                    \u8fd4\u56de\u7ed3\u679c<\/p>\n<p>\u540c\u65f6&#xff0c;\u7cfb\u7edf\u8fd8\u53ef\u4ee5\u5728\u5916\u56f4\u589e\u52a0\u51e0\u5c42\u4fdd\u62a4&#xff1a;<\/p>\n<ul>\n<li>\u7ed9\u5927\u91cf\u7f13\u5b58\u7684 TTL \u589e\u52a0\u968f\u673a\u504f\u79fb&#xff0c;\u964d\u4f4e\u96c6\u4e2d\u5931\u6548\u98ce\u9669\u3002<\/li>\n<li>\u4f7f\u7528 Redis 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