{"id":117790,"date":"2024-10-24T21:09:55","date_gmt":"2024-10-24T13:09:55","guid":{"rendered":"https:\/\/server.hk\/cnblog\/117790\/"},"modified":"2024-10-24T21:09:56","modified_gmt":"2024-10-24T13:09:56","slug":"redis-%e5%bf%ab%e5%8f%96%e5%af%a6%e7%8f%be%e8%87%aa%e5%8b%95%e6%b8%85%e7%90%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/117790\/","title":{"rendered":"Redis \u5feb\u53d6\u5be6\u73fe\u81ea\u52d5\u6e05\u7406"},"content":{"rendered":"<h1 id=\"redis-%e5%bf%ab%e5%8f%96%e5%af%a6%e7%8f%be%e8%87%aa%e5%8b%95%e6%b8%85%e7%90%86-pFGWFTcNin\">Redis \u5feb\u53d6\u5be6\u73fe\u81ea\u52d5\u6e05\u7406<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u4e2d\uff0c\u5feb\u53d6\u6280\u8853\u5df2\u6210\u70ba\u63d0\u5347\u6027\u80fd\u548c\u7528\u6236\u9ad4\u9a57\u7684\u91cd\u8981\u624b\u6bb5\u3002Redis \u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5feb\u53d6\u7cfb\u7d71\u4e2d\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 Redis \u4e2d\u5be6\u73fe\u81ea\u52d5\u6e05\u7406\uff0c\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-redis-%e5%bf%ab%e5%8f%96%ef%bc%9f-pFGWFTcNin\">\u4ec0\u9ebc\u662f Redis \u5feb\u53d6\uff1f<\/h2>\n<p>Redis\uff08Remote Dictionary Server\uff09\u662f\u4e00\u500b\u958b\u6e90\u7684\u9ad8\u6027\u80fd\u9375\u503c\u6578\u64da\u5eab\uff0c\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\u3002\u7531\u65bc\u5176\u9ad8\u6548\u7684\u8b80\u5beb\u6027\u80fd\uff0cRedis \u5e38\u88ab\u7528\u4f5c\u5feb\u53d6\u7cfb\u7d71\uff0c\u5e6b\u52a9\u6e1b\u5c11\u6578\u64da\u5eab\u7684\u8ca0\u64d4\uff0c\u63d0\u5347\u61c9\u7528\u7684\u97ff\u61c9\u901f\u5ea6\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e8%87%aa%e5%8b%95%e6%b8%85%e7%90%86%ef%bc%9f-pFGWFTcNin\">\u70ba\u4ec0\u9ebc\u9700\u8981\u81ea\u52d5\u6e05\u7406\uff1f<\/h2>\n<p>\u5728\u4f7f\u7528 Redis \u4f5c\u70ba\u5feb\u53d6\u6642\uff0c\u6578\u64da\u7684\u5b58\u5132\u662f\u6709\u9650\u7684\u3002\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\uff0c\u5feb\u53d6\u4e2d\u7684\u6578\u64da\u53ef\u80fd\u6703\u8b8a\u5f97\u904e\u6642\u6216\u4e0d\u518d\u9700\u8981\u3002\u82e5\u4e0d\u9032\u884c\u6e05\u7406\uff0c\u5c07\u5c0e\u81f4\u5167\u5b58\u7684\u6d6a\u8cbb\uff0c\u751a\u81f3\u53ef\u80fd\u5f71\u97ff\u7cfb\u7d71\u7684\u6027\u80fd\u3002\u56e0\u6b64\uff0c\u81ea\u52d5\u6e05\u7406\u6a5f\u5236\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002<\/p>\n<h2 id=\"redis-%e7%9a%84%e8%87%aa%e5%8b%95%e6%b8%85%e7%90%86%e6%a9%9f%e5%88%b6-pFGWFTcNin\">Redis \u7684\u81ea\u52d5\u6e05\u7406\u6a5f\u5236<\/h2>\n<p>Redis \u63d0\u4f9b\u4e86\u591a\u7a2e\u81ea\u52d5\u6e05\u7406\u7684\u7b56\u7565\uff0c\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u5e7e\u7a2e\uff1a<\/p>\n<ul>\n<li><strong>\u904e\u671f\u6642\u9593\uff08TTL\uff09<\/strong>\uff1a\u6bcf\u500b\u9375\u90fd\u53ef\u4ee5\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\uff0c\u7576\u6642\u9593\u5230\u9054\u5f8c\uff0c\u8a72\u9375\u5c07\u81ea\u52d5\u88ab\u522a\u9664\u3002<\/li>\n<li><strong>LRU\uff08Least Recently Used\uff09\u7b97\u6cd5<\/strong>\uff1a\u7576 Redis \u7684\u5167\u5b58\u9054\u5230\u4e0a\u9650\u6642\uff0c\u6703\u81ea\u52d5\u522a\u9664\u6700\u4e45\u672a\u4f7f\u7528\u7684\u9375\u3002<\/li>\n<li><strong>\u96a8\u6a5f\u522a\u9664<\/strong>\uff1a\u5728\u5167\u5b58\u9054\u5230\u4e0a\u9650\u6642\uff0c\u96a8\u6a5f\u522a\u9664\u4e00\u4e9b\u9375\u4ee5\u91cb\u653e\u7a7a\u9593\u3002<\/li>\n<\/ul>\n<h3 id=\"%e8%a8%ad%e7%bd%ae%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93-pFGWFTcNin\">\u8a2d\u7f6e\u904e\u671f\u6642\u9593<\/h3>\n<p>\u5728 Redis \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>EXPIRE<\/code> \u547d\u4ee4\u4f86\u8a2d\u7f6e\u9375\u7684\u904e\u671f\u6642\u9593\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SET mykey \"Hello\"\nEXPIRE mykey 10<\/code><\/pre>\n<p>\u4e0a\u8ff0\u4ee3\u78bc\u5c07\u5728 10 \u79d2\u5f8c\u81ea\u52d5\u522a\u9664\u9375 <code>mykey<\/code>\u3002<\/p>\n<h3 id=\"%e9%85%8d%e7%bd%ae-lru-%e7%ad%96%e7%95%a5-pFGWFTcNin\">\u914d\u7f6e LRU \u7b56\u7565<\/h3>\n<p>\u8981\u555f\u7528 LRU \u7b56\u7565\uff0c\u53ef\u4ee5\u5728 Redis \u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u8a2d\u7f6e <code>maxmemory-policy<\/code>\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>maxmemory 256mb\nmaxmemory-policy allkeys-lru<\/code><\/pre>\n<p>\u9019\u6a23\u914d\u7f6e\u5f8c\uff0c\u7576 Redis \u7684\u5167\u5b58\u4f7f\u7528\u9054\u5230 256MB \u6642\uff0c\u5c07\u81ea\u52d5\u522a\u9664\u6700\u4e45\u672a\u4f7f\u7528\u7684\u9375\u3002<\/p>\n<h2 id=\"%e7%9b%a3%e6%8e%a7%e5%92%8c%e8%aa%bf%e6%95%b4-pFGWFTcNin\">\u76e3\u63a7\u548c\u8abf\u6574<\/h2>\n<p>\u70ba\u4e86\u78ba\u4fdd\u81ea\u52d5\u6e05\u7406\u6a5f\u5236\u7684\u6709\u6548\u6027\uff0c\u5efa\u8b70\u5b9a\u671f\u76e3\u63a7 Redis \u7684\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\u3002\u53ef\u4ee5\u4f7f\u7528 <code>INFO memory<\/code> \u547d\u4ee4\u4f86\u67e5\u770b\u5167\u5b58\u7684\u4f7f\u7528\u72c0\u6cc1\uff0c\u4e26\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u8abf\u6574\u914d\u7f6e\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-pFGWFTcNin\">\u7d50\u8ad6<\/h2>\n<p>Redis 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