{"id":36054,"date":"2026-09-13T08:00:52","date_gmt":"2026-09-13T00:00:52","guid":{"rendered":"https:\/\/www.varidata.com\/?p=36054"},"modified":"2026-09-10T17:53:31","modified_gmt":"2026-09-10T09:53:31","slug":"why-redis-memory-spikes-on-a-server","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-cn\/blog-en\/why-redis-memory-spikes-on-a-server\/","title":{"rendered":"\u4e3a\u4ec0\u4e48\u670d\u52a1\u5668\u4e0a\u7684 Redis \u5185\u5b58\u4f1a\u66b4\u6da8"},"content":{"rendered":"\n<p>\u5728\u771f\u5b9e\u7684<a href=\"https:\/\/www.varidata.com\/zh-cn\/server\/tokyo\/\" target=\"_blank\">\u670d\u52a1\u5668\u79df\u7528\u73af\u5883<\/a>\u4e2d\uff0cRedis \u5185\u5b58\u66b4\u6da8\u5f88\u5c11\u610f\u5473\u7740\u201c\u670d\u52a1\u5668\u7a81\u7136\u62bd\u98ce\u4e86\u201d\u3002\u5b83\u901a\u5e38\u6307\u5411\u67d0\u79cd\u53ef\u4ee5\u88ab\u5b9a\u4f4d\u7684\u6a21\u5f0f\uff1a\u4f8b\u5982 key \u6570\u91cf\u589e\u957f\u3001\u6dd8\u6c70\u884c\u4e3a\u5f02\u5e38\u3001\u6301\u4e45\u5316\u5f00\u9500\u3001\u5206\u914d\u5668\u590d\u7528\uff0c\u6216\u5ba2\u6237\u7aef\u538b\u529b\u5347\u9ad8\u3002\u5bf9\u4e8e\u5728\u65e5\u672c\u57fa\u7840\u8bbe\u65bd\u4e0a\u8fd0\u884c\u4f4e\u5ef6\u8fdf\u4e1a\u52a1\u7684\u5de5\u7a0b\u5e08\u6765\u8bf4\uff0c\u8fd9\u4e00\u70b9\u5c24\u4e3a\u5173\u952e\uff0c\u56e0\u4e3a Redis \u5185\u5b58\u66b4\u6da8\u5f80\u5f80\u4f1a\u8fdb\u4e00\u6b65\u5f15\u53d1 swap \u6d3b\u52a8\u3001\u5c3e\u5ef6\u8fdf\u4e0a\u5347\u3001\u5199\u5165\u5931\u8d25\uff0c\u4ee5\u53ca\u540c\u4e00\u8282\u70b9\u4e0a\u5176\u4ed6\u670d\u52a1\u88ab\u8fde\u5e26\u5e72\u6270\u3002\u597d\u6d88\u606f\u662f\uff0c\u53ea\u8981\u6309\u7167\u6b63\u786e\u987a\u5e8f\u68c0\u67e5\u5185\u5b58\u8ba1\u6570\u5668\u3001TTL \u7eaa\u5f8b\u3001key \u7ed3\u6784\u4e0e\u5de5\u4f5c\u8d1f\u8f7d\u65f6\u5e8f\uff0c\u5927\u591a\u6570\u6545\u969c\u90fd\u80fd\u89e3\u91ca\u6e05\u695a\u3002<\/p>\n<p>Redis \u4e4b\u6240\u4ee5\u5feb\uff0c\u662f\u56e0\u4e3a\u5b83\u628a\u5de5\u4f5c\u6570\u636e\u4fdd\u5b58\u5728\u5185\u5b58\u4e2d\uff1b\u4f46\u4e5f\u6b63\u56e0\u4e3a\u5982\u6b64\uff0c\u5185\u5b58\u884c\u4e3a\u4f1a\u88ab\u653e\u5927\u5f97\u975e\u5e38\u660e\u663e\u3002\u5173\u7cfb\u578b\u6570\u636e\u5e93\u5f80\u5f80\u8fd8\u80fd\u501f\u52a9\u5b58\u50a8\u5ef6\u8fdf\u6682\u65f6\u63a9\u76d6\u4f4e\u6548\u8bbe\u8ba1\uff0c\u800c Redis \u4e0d\u884c\u3002\u5f53\u5185\u5b58\u5360\u7528\u7a81\u7136\u5347\u9ad8\u65f6\uff0c\u6839\u56e0\u901a\u5e38\u5e76\u975e\u67d0\u4e00\u4e2a\u5de8\u5927\u7684\u9519\u8bef\uff0c\u800c\u662f\u82e5\u5e72\u8f83\u5c0f\u7684\u8bbe\u8ba1\u9009\u62e9\u5728\u9519\u8bef\u7684\u65f6\u95f4\u53e0\u52a0\u5230\u4e86\u4e00\u8d77\uff1a\u67d0\u5904\u6f0f\u8bbe\u8fc7\u671f\u65f6\u95f4\u3001\u67d0\u4e2a\u96c6\u5408\u5f02\u5e38\u81a8\u80c0\u3001\u4e00\u6b21\u540e\u53f0\u91cd\u5199\u6070\u9022\u6d41\u91cf\u9ad8\u5cf0\uff0c\u6216\u8005\u51b7\u542f\u52a8\u90e8\u7f72\u540e\u7684\u7f13\u5b58\u56de\u586b\u98ce\u66b4\u3002\u6839\u636e\u5b98\u65b9\u6587\u6863\uff0c\u5982\u679c\u6ca1\u6709\u8bbe\u7f6e\u5185\u5b58\u4e0a\u9650\uff0cRedis \u4f1a\u6301\u7eed\u6309\u9700\u7533\u8bf7\u5185\u5b58\uff1b\u800c\u4e14\u5373\u4fbf key \u88ab\u5220\u9664\uff0c\u5185\u5b58\u4e5f\u4e0d\u4f1a\u603b\u662f\u7acb\u523b\u5f52\u8fd8\u7ed9\u64cd\u4f5c\u7cfb\u7edf\uff0c\u56e0\u4e3a\u5206\u914d\u5668\u662f\u4ee5\u9875\u7c92\u5ea6\u7ba1\u7406\u5185\u5b58\u7684\u3002<\/p>\n<h2><strong>\u5185\u5b58\u7a81\u7136\u8df3\u5347\u901a\u5e38\u4f1a\u5448\u73b0\u4ec0\u4e48\u6837\u5b50<\/strong><\/h2>\n<p>\u4ece\u5916\u90e8\u73b0\u8c61\u770b\uff0c\u8fd9\u7c7b\u6545\u969c\u5f80\u5f80\u5f88\u7b80\u5355\uff1a\u8fdb\u7a0b\u4f53\u79ef\u53d8\u5927\u3001\u53ef\u7528\u5185\u5b58\u4e0b\u964d\u3001\u5e94\u7528\u54cd\u5e94\u65f6\u95f4\u53d8\u5f97\u4e0d\u7a33\u5b9a\uff1b\u5982\u679c\u6d89\u53ca\u5185\u5b58\u4e0a\u9650\u6216\u6dd8\u6c70\u7b56\u7565\uff0c\u5199\u5165\u8fd8\u53ef\u80fd\u5931\u8d25\u3002\u4f46\u5728 Redis \u5185\u90e8\uff0c\u4e0d\u540c\u6307\u6807\u8bb2\u8ff0\u7684\u6545\u4e8b\u5e76\u4e0d\u603b\u662f\u4e00\u81f4\u3002\u5b98\u65b9\u8bf4\u660e\u660e\u786e\u533a\u5206\u4e86\u903b\u8f91\u5185\u5b58\u4f7f\u7528\u91cf\u4e0e\u5e38\u9a7b\u5185\u5b58\u96c6\u5927\u5c0f\uff0c\u540e\u8005\u5373\u4fbf\u5728 key \u88ab\u5220\u9664\u540e\u4ecd\u53ef\u80fd\u7ef4\u6301\u9ad8\u4f4d\uff0c\u56e0\u4e3a\u5185\u5b58\u9875\u5e76\u4e0d\u4f1a\u603b\u662f\u7acb\u523b\u8fd4\u8fd8\u7ed9\u7cfb\u7edf\u3002<\/p>\n<ul>\n<li><strong>\u903b\u8f91\u589e\u957f\uff1a<\/strong>key \u53d8\u591a\u3001value \u53d8\u5927\uff0c\u6216\u4e24\u8005\u540c\u65f6\u53d1\u751f\u3002<\/li>\n<li><strong>\u7269\u7406\u589e\u957f\uff1a<\/strong>\u5e38\u9a7b\u5185\u5b58\u4e0a\u5347\u901f\u5ea6\u5feb\u4e8e\u5e94\u7528\u5c42\u53ef\u89c1\u7684\u5b9e\u9645\u4f7f\u7528\u91cf\u3002<\/li>\n<li><strong>\u77ac\u65f6\u589e\u957f\uff1a<\/strong>\u540e\u53f0\u6301\u4e45\u5316\u6216\u9ad8\u5199\u5165\u547d\u4ee4\u628a\u5185\u5b58\u63a8\u9ad8\u5230\u7a33\u6001\u4e4b\u4e0a\u3002<\/li>\n<li><strong>\u7b56\u7565\u578b\u75c7\u72b6\uff1a<\/strong>\u6dd8\u6c70\u6570\u91cf\u589e\u52a0\uff0c\u6216\u8005\u5199\u547d\u4ee4\u5f00\u59cb\u8fd4\u56de\u5185\u5b58\u4e0d\u8db3\u9519\u8bef\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u4e2a\u533a\u522b\u5f88\u91cd\u8981\u3002\u5982\u679c\u4f60\u628a\u5206\u914d\u5668\u4fdd\u7559\u5185\u5b58\u8bef\u5224\u4e3a\u6cc4\u6f0f\uff0c\u91cd\u542f\u5b9e\u4f8b\u4e5f\u89e3\u51b3\u4e0d\u4e86\u6839\u56e0\uff1b\u5982\u679c\u4f60\u628a\u7f13\u5b58\u56de\u586b\u9ad8\u5cf0\u89c6\u4e3a\u201c\u6b63\u5e38\u6ce2\u52a8\u201d\uff0c\u5374\u5ffd\u7565\u4e86\u6b64\u65f6\u540e\u53f0\u91cd\u5199\u6b63\u5728\u8fdb\u884c\uff0c\u5c31\u53ef\u80fd\u8e29\u4e2d\u5b8c\u5168\u53ef\u4ee5\u907f\u514d\u7684\u6545\u969c\u7a97\u53e3\u3002<\/p>\n<h2><strong>Redis \u5185\u5b58\u66b4\u6da8\u6700\u5e38\u89c1\u7684\u539f\u56e0<\/strong><\/h2>\n<p>\u5927\u591a\u6570\u95ee\u9898\u5176\u5b9e\u90fd\u80fd\u5f52\u5165\u5c11\u6570\u51e0\u7c7b\u6280\u672f\u539f\u56e0\uff0c\u800c\u4e0d\u662f\u795e\u79d8\u6545\u969c\u3002\u5728\u751f\u4ea7\u7ea7\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u4e2d\uff0c\u4e0b\u9762\u8fd9\u4e9b\u6a21\u5f0f\u53cd\u590d\u51fa\u73b0\u3002<\/p>\n<ol>\n<li><strong>\u65b0\u7f13\u5b58\u6761\u76ee\u5728\u77ed\u65f6\u95f4\u5185\u5927\u91cf\u6d8c\u5165\u3002<\/strong> \u6d41\u91cf\u9ad8\u5cf0\u3001\u722c\u866b\u98ce\u66b4\u3001\u53d1\u5e03\u4e8b\u4ef6\uff0c\u6216\u7f13\u5b58\u672a\u547d\u4e2d\u6d2a\u5cf0\uff0c\u90fd\u53ef\u80fd\u4f7f key \u6570\u91cf\u8fc5\u901f\u4e0a\u5347\u3002\u5982\u679c\u5e94\u7528\u4ee3\u7801\u5728\u53d1\u73b0\u7f13\u5b58\u7f3a\u5931\u540e\u8fdb\u884c\u6fc0\u8fdb\u5f0f\u56de\u586b\uff0c\u5185\u5b58\u589e\u957f\u901f\u5ea6\u5f80\u5f80\u4f1a\u6bd4\u8bf7\u6c42\u91cf\u770b\u8d77\u6765\u66f4\u5938\u5f20\u3002<\/li>\n<li><strong>Big Key\u3002<\/strong> \u4e00\u4e2a\u5f02\u5e38\u5e9e\u5927\u7684 string\u3001hash\u3001set\u3001list \u6216 sorted set\uff0c\u5c31\u8db3\u4ee5\u626d\u66f2\u6574\u4f53\u5185\u5b58\u753b\u50cf\u3002\u5b98\u65b9\u5173\u4e8e key \u7a7a\u95f4\u4f7f\u7528\u7684\u8bf4\u660e\u63d0\u5230\uff0ckey \u957f\u5ea6\u4e0e value \u7ed3\u6784\u90fd\u4f1a\u5f71\u54cd\u5185\u5b58\u6210\u672c\uff0c\u56e0\u6b64\u7cdf\u7cd5\u7684 key \u8bbe\u8ba1\u4f1a\u968f\u7740\u89c4\u6a21\u6269\u5927\u800c\u8fc5\u901f\u6076\u5316\u3002<\/li>\n<li><strong>\u7f3a\u5c11 TTL\u3002<\/strong> \u6ca1\u6709\u4e25\u683c\u8fc7\u671f\u673a\u5236\u7684\u7f13\u5b58\uff0c\u672c\u8d28\u4e0a\u53ea\u662f\u201c\u91ce\u5fc3\u52c3\u52c3\u7684\u5185\u5b58\u6570\u636e\u5e93\u201d\u3002Redis \u652f\u6301 TTL \u548c\u8fc7\u671f\u63a7\u5236\uff0c\u4f46\u5982\u679c\u5199\u5165 key \u65f6\u6ca1\u6709\u9644\u5e26\u8fc7\u671f\u65f6\u95f4\uff0c\u9648\u65e7\u5bf9\u8c61\u5c31\u4f1a\u4e0d\u65ad\u7d2f\u79ef\uff0c\u76f4\u5230\u5185\u5b58\u538b\u529b\u8089\u773c\u53ef\u89c1\u3002<\/li>\n<li><strong>\u8fc7\u671f\u56de\u6536\u6ede\u540e\u3002<\/strong> \u5373\u4fbf\u8bbe\u7f6e\u4e86 TTL\uff0c\u4e5f\u4e0d\u7b49\u4e8e\u5185\u5b58\u4f1a\u7acb\u523b\u91ca\u653e\u3002\u5927\u91cf\u201c\u63a5\u8fd1\u6b7b\u4ea1\u201d\u7684 key \u53ef\u80fd\u5728\u6e05\u7406\u771f\u6b63\u5b8c\u6210\u524d\u6301\u7eed\u62ac\u9ad8\u5185\u5b58\u6c34\u4f4d\u3002<\/li>\n<li><strong>\u788e\u7247\u5316\u4e0e\u5206\u914d\u5668\u590d\u7528\u3002<\/strong> Redis \u5b98\u65b9\u6587\u6863\u660e\u786e\u63d0\u9192\uff0c\u5220\u9664\u540e\u7684\u5185\u5b58\u5e76\u4e0d\u4e00\u5b9a\u4f1a\u9a6c\u4e0a\u8fd4\u8fd8\u7ed9\u64cd\u4f5c\u7cfb\u7edf\uff0c\u56e0\u6b64\u5373\u4fbf\u5b8c\u6210\u6e05\u7406\uff0cRSS \u4e5f\u53ef\u80fd\u7ef4\u6301\u9ad8\u4f4d\u3002<\/li>\n<li><strong>\u6301\u4e45\u5316\u5f00\u9500\u3002<\/strong> \u5feb\u7167\u4e0e\u8ffd\u52a0\u65e5\u5fd7\u7ef4\u62a4\u5728\u9ad8\u5199\u5165\u65f6\u671f\u90fd\u53ef\u80fd\u6682\u65f6\u589e\u52a0\u5185\u5b58\u538b\u529b\u3002\u5b98\u65b9\u5173\u4e8e\u6dd8\u6c70\u7b56\u7565\u7684\u8bf4\u660e\u4e5f\u5efa\u8bae\uff0c\u5728\u542f\u7528\u6301\u4e45\u5316\u65f6\u9884\u7559\u989d\u5916 RAM \u4ee5\u5bb9\u7eb3\u7f13\u51b2\u533a\u3002<\/li>\n<li><strong>\u6ca1\u6709\u6709\u6548\u7684\u5185\u5b58\u4e0a\u9650\u3002<\/strong> \u5982\u679c <code>maxmemory<\/code> \u6ca1\u6709\u914d\u7f6e\uff0c\u6216\u8005\u914d\u7f6e\u5f97\u4e0d\u73b0\u5b9e\uff0cRedis \u5c31\u4f1a\u6301\u7eed\u541e\u566c\u53ef\u7528 RAM\uff0c\u76f4\u5230\u64cd\u4f5c\u73af\u5883\u6574\u4f53\u53d8\u5f97\u4e0d\u7a33\u5b9a\u3002\u5b98\u65b9\u6587\u6863\u5efa\u8bae\u663e\u5f0f\u8bbe\u7f6e\u5185\u5b58\u4e0a\u9650\uff0c\u800c\u4e0d\u662f\u653e\u4efb\u8fdb\u7a0b\u65e0\u9650\u589e\u957f\u3002<\/li>\n<li><strong>\u5ba2\u6237\u7aef\u8fde\u63a5\u8fc7\u591a\u3002<\/strong> \u5ba2\u6237\u7aef\u72b6\u6001\u540c\u6837\u5360\u7528\u5185\u5b58\u3002\u5b98\u65b9\u5173\u4e8e\u5ba2\u6237\u7aef\u5904\u7406\u7684\u8bf4\u660e\u6307\u51fa\uff0c\u5927\u91cf\u8fde\u63a5\u4f1a\u660e\u663e\u589e\u52a0\u5185\u5b58\u6d88\u8017\uff0c\u751a\u81f3\u53ef\u80fd\u8fdb\u4e00\u6b65\u8bf1\u53d1\u6dd8\u6c70\u6216\u5185\u5b58\u4e0d\u8db3\u95ee\u9898\u3002<\/li>\n<\/ol>\n<h2><strong>\u5982\u4f55\u5224\u65ad\u5230\u5e95\u662f\u54ea\u4e00\u79cd\u539f\u56e0\u51fb\u4e2d\u4e86\u4f60\u7684\u670d\u52a1\u5668<\/strong><\/h2>\n<p>\u6700\u5feb\u7684\u65b9\u6cd5\u4e0d\u662f\u76ef\u7740\u5355\u4e00\u6307\u6807\u53d1\u5446\uff0c\u800c\u662f\u5efa\u7acb\u4e00\u6761\u7b80\u77ed\u4f46\u6709\u6548\u7684\u8bc1\u636e\u94fe\u3002\u5148\u770b Redis \u5185\u5b58\u8ba1\u6570\u5668\uff0c\u518d\u68c0\u67e5 key \u7684\u5f62\u6001\uff0c\u6700\u540e\u628a\u8fd9\u4e9b\u53d1\u73b0\u4e0e\u4e1a\u52a1\u8d1f\u8f7d\u53d1\u751f\u7684\u65f6\u95f4\u70b9\u5bf9\u9f50\u3002<\/p>\n<ul>\n<li>\u68c0\u67e5 <code>INFO memory<\/code>\uff0c\u67e5\u770b\u903b\u8f91\u5185\u5b58\u4f7f\u7528\u91cf\u3001RSS\u3001\u788e\u7247\u5316\u6307\u6807\u4ee5\u53ca\u914d\u7f6e\u7684\u5185\u5b58\u4e0a\u9650\u3002<\/li>\n<li>\u89c2\u5bdf\u6dd8\u6c70\u884c\u4e3a\uff0c\u4ee5\u53ca\u5b9e\u4f8b\u662f\u5426\u5df2\u7ecf\u903c\u8fd1\u914d\u7f6e\u4e0a\u9650\u3002<\/li>\n<li>\u62bd\u6837\u68c0\u67e5 TTL \u8986\u76d6\u7387\uff0c\u786e\u8ba4\u6240\u8c13\u201c\u7f13\u5b58\u201dkey \u662f\u5426\u771f\u7684\u4f1a\u8fc7\u671f\u3002<\/li>\n<li>\u67e5\u627e\u8d85\u5927\u7684\u96c6\u5408\u6216\u610f\u5916\u80a5\u80d6\u7684 value\u3002<\/li>\n<li>\u628a\u6545\u969c\u65f6\u95f4\u70b9\u4e0e\u53d1\u5e03\u7a97\u53e3\u3001\u6d41\u91cf\u6ce2\u5cf0\u6216\u6301\u4e45\u5316\u4efb\u52a1\u5bf9\u5e94\u8d77\u6765\u3002<\/li>\n<\/ul>\n<p>\u5982\u679c\u903b\u8f91\u5185\u5b58\u548c RSS \u540c\u65f6\u4e0a\u5347\uff0c\u90a3\u4e48\u4f60\u7684\u6570\u636e\u96c6\u5927\u6982\u7387\u786e\u5b9e\u5728\u589e\u957f\uff1b\u5982\u679c\u903b\u8f91\u5185\u5b58\u8d8b\u4e8e\u7a33\u5b9a\uff0c\u4f46 RSS \u957f\u65f6\u95f4\u5c45\u9ad8\u4e0d\u4e0b\uff0c\u90a3\u4e48\u66f4\u5e94\u6000\u7591\u788e\u7247\u5316\u6216\u5206\u914d\u5668\u4fdd\u7559\uff1b\u5982\u679c\u5185\u5b58\u662f\u5728\u67d0\u4e9b\u4f1a\u4ea7\u751f\u4e34\u65f6\u5927\u7ed3\u679c\u96c6\u7684\u547d\u4ee4\u6267\u884c\u671f\u95f4\u7a81\u7136\u8df3\u9ad8\uff0c\u5b98\u65b9\u5173\u4e8e\u6dd8\u6c70\u7684\u8bf4\u660e\u6307\u51fa\uff0cRedis \u53ef\u80fd\u5728\u6dd8\u6c70\u52a8\u4f5c\u628a\u5185\u5b58\u62c9\u56de\u4e4b\u524d\uff0c\u77ed\u6682\u8d85\u8fc7\u5df2\u914d\u7f6e\u7684\u4e0a\u9650\u3002<\/p>\n<h2><strong>Big Key \u7684\u5371\u9669\u5f80\u5f80\u6bd4\u770b\u4e0a\u53bb\u66f4\u5927<\/strong><\/h2>\n<p>\u5de5\u7a0b\u5e08\u901a\u5e38\u4e60\u60ef\u5148\u770b\u603b key \u6570\uff0c\u4f46 key \u7684\u5206\u5e03\u540c\u6837\u91cd\u8981\u3002\u4e0a\u767e\u4e07\u4e2a\u9002\u4e2d\u7684 key\uff0c\u5f80\u5f80\u6bd4\u5c11\u6570\u51e0\u4e2a\u75c5\u6001\u5de8\u578b key \u66f4\u5bb9\u6613\u7ba1\u7406\u3002Big Key \u4e4b\u6240\u4ee5\u5371\u9669\uff0c\u662f\u56e0\u4e3a\u5b83\u4f1a\u4ece\u591a\u4e2a\u7ef4\u5ea6\u653e\u5927\u98ce\u9669\uff1a<\/p>\n<ul>\n<li>\u5b83\u4f1a\u5feb\u901f\u62ac\u9ad8\u5185\u5b58\u5360\u7528\u3002<\/li>\n<li>\u5b83\u4f1a\u52a0\u91cd\u590d\u5236\u4e0e\u6301\u4e45\u5316\u8d1f\u62c5\u3002<\/li>\n<li>\u5b83\u4f1a\u589e\u52a0\u5e8f\u5217\u5316\u4e0e\u7f51\u7edc\u4f20\u8f93\u5ef6\u8fdf\u3002<\/li>\n<li>\u5b83\u4f1a\u8ba9\u6dd8\u6c70\u884c\u4e3a\u53d8\u5f97\u66f4\u96be\u9884\u6d4b\u3002<\/li>\n<\/ul>\n<p>\u89e3\u51b3\u5b83\u901a\u5e38\u9760\u67b6\u6784\u8c03\u6574\uff0c\u800c\u4e0d\u662f\u8868\u9762\u4fee\u8865\u3002\u628a\u8d85\u5927\u805a\u5408\u62c6\u5f00\uff0c\u907f\u514d\u628a\u5355\u4e2a key \u4f5c\u4e3a\u6301\u7eed\u589e\u957f\u7684\u201c\u5927\u6876\u201d\uff0c\u5e76\u6839\u636e\u8bfb\u53d6\u6a21\u5f0f\u9009\u62e9\u5339\u914d\u7684\u6570\u636e\u7ed3\u6784\uff0c\u800c\u4e0d\u662f\u628a\u6df7\u6742\u8d1f\u8f7d\u4e00\u80a1\u8111\u585e\u8fdb\u4e00\u4e2a\u5730\u65b9\u3002\u53e6\u5916\uff0ckey \u540d\u79f0\u4e5f\u5e94\u5c3d\u91cf\u7d27\u51d1\uff1b\u5b98\u65b9\u5173\u4e8e key \u7a7a\u95f4\u7684\u8bf4\u660e\u63d0\u5230\uff0c\u8f83\u77ed\u7684 key \u786e\u5b9e\u80fd\u8282\u7701\u4e00\u90e8\u5206\u5185\u5b58\uff0c\u5c3d\u7ba1\u53ef\u8bfb\u6027\u4ecd\u7136\u91cd\u8981\u3002<\/p>\n<h2><strong>TTL \u7eaa\u5f8b\u5f80\u5f80\u662f\u5f88\u591a\u7f13\u5b58\u7cfb\u7edf\u6084\u6084\u5931\u6548\u7684\u5730\u65b9<\/strong><\/h2>\n<p>\u7eb8\u9762\u4e0a\u8bf4\u201c\u6211\u4eec\u628a Redis \u5f53\u7f13\u5b58\u6765\u7528\u201d\u542c\u8d77\u6765\u5f88\u5b89\u5168\uff1b\u4f46\u5230\u4e86\u4ee3\u7801\u91cc\uff0c\u56e2\u961f\u7ecf\u5e38\u65e0\u6cd5\u5728\u6240\u6709\u5199\u8def\u5f84\u4e0a\u7edf\u4e00\u6267\u884c\u8fc7\u671f\u63a7\u5236\u3002\u4e00\u4e2a\u63a5\u53e3\u4f1a\u8bbe\u7f6e TTL\uff0c\u53e6\u4e00\u4e2a\u63a5\u53e3\u5374\u8df3\u8fc7\u5b83\uff1b\u4e00\u4e2a\u6279\u5904\u7406\u4efb\u52a1\u4e3a\u4e86\u65b9\u4fbf\u76f4\u63a5\u5199\u6c38\u4e45 key\uff1b\u516d\u5468\u4e4b\u540e\uff0c\u8fd9\u4e2a\u5b9e\u4f8b\u8868\u73b0\u51fa\u6765\u7684\u66f4\u50cf\u662f\u4e00\u4e2a\u5f52\u6863\u7cfb\u7edf\uff0c\u800c\u4e0d\u662f\u7f13\u5b58\u5c42\u3002\u5b98\u65b9\u5173\u4e8e TTL \u548c\u7f13\u5b58\u6a21\u5f0f\u7684\u6587\u6863\u5f3a\u8c03\uff0c\u8fc7\u671f\u673a\u5236\u662f\u63a7\u5236\u5185\u5b58\u884c\u4e3a\u7684\u6838\u5fc3\u624b\u6bb5\u4e4b\u4e00\u3002<\/p>\n<p>\u597d\u7684 TTL \u7b56\u7565\u5e76\u4e0d\u53ea\u662f\u201c\u968f\u4fbf\u8bbe\u4e00\u4e2a\u503c\u201d\u3002\u5b83\u5e94\u5f53\u53cd\u6620\u5bf9\u8c61\u53d8\u5316\u9891\u7387\u3001\u56de\u586b\u6210\u672c\u548c\u6545\u969c\u5bb9\u5fcd\u5ea6\u3002\u77ed\u751f\u547d\u5468\u671f\u7684\u6d3e\u751f\u6570\u636e\u5e94\u8be5\u66f4\u6fc0\u8fdb\u5730\u8fc7\u671f\uff1b\u6602\u8d35\u4f46\u53ef\u91cd\u5efa\u7684\u5bf9\u8c61\u53ef\u4ee5\u9002\u5f53\u5b58\u6d3b\u66f4\u4e45\uff1b\u63a5\u8fd1\u6c38\u4e45\u7684\u8fd0\u884c\u72b6\u6001\u5219\u5e94\u9694\u79bb\u5b58\u653e\uff0c\u907f\u514d\u626d\u66f2\u6574\u4e2a\u7f13\u5b58\u5c42\u3002\u5982\u679c\u4f60\u7684 Redis \u5185\u5b58\u66b4\u6da8\u603b\u662f\u5468\u671f\u6027\u91cd\u6f14\uff0c\u90a3\u4e48 TTL \u8986\u76d6\u4e0d\u4e00\u81f4\u51e0\u4e4e\u4e00\u5b9a\u662f\u91cd\u70b9\u5acc\u7591\u5bf9\u8c61\u3002<\/p>\n<h2><strong>\u6dd8\u6c70\u7b56\u7565\u65e2\u53ef\u80fd\u6551\u547d\uff0c\u4e5f\u53ef\u80fd\u63a9\u76d6\u95ee\u9898<\/strong><\/h2>\n<p>Redis \u63d0\u4f9b\u4e86\u591a\u79cd\u6dd8\u6c70\u7b56\u7565\uff0c\u5b98\u65b9\u8bf4\u660e\u89e3\u91ca\u4e86\uff1a\u5f53\u5185\u5b58\u8d8a\u8fc7\u914d\u7f6e\u4e0a\u9650\u65f6\uff0c\u4e0d\u540c\u7b56\u7565\u5c06\u51b3\u5b9a\u5b9e\u4f8b\u5982\u4f55\u5904\u7406\u540e\u7eed\u538b\u529b\u3002\u57fa\u4e8e\u5168\u90e8 key \u7684\u7b56\u7565\u4e0e\u4ec5\u57fa\u4e8e\u5e26\u8fc7\u671f key \u7684\u7b56\u7565\uff0c\u5728\u538b\u529b\u573a\u666f\u4e0b\u8868\u73b0\u5b8c\u5168\u4e0d\u540c\uff1b\u800c <code>noeviction<\/code> \u4f1a\u628a\u5185\u5b58\u538b\u529b\u76f4\u63a5\u8f6c\u5316\u4e3a\u663e\u5f0f\u5199\u5165\u5931\u8d25\uff0c\u800c\u4e0d\u662f\u9759\u9ed8\u5730\u6e05\u6389\u6570\u636e\u3002<\/p>\n<p>\u5bf9\u6392\u969c\u800c\u8a00\uff0c\u8fd9\u4e2a\u5dee\u5f02\u81f3\u5173\u91cd\u8981\uff1a<\/p>\n<ol>\n<li>\u5982\u679c\u542f\u7528\u4e86\u6dd8\u6c70\uff0c\u670d\u52a1\u5668\u8868\u9762\u4e0a\u53ef\u80fd\u201c\u7a33\u5b9a\u201d\uff0c\u4f46\u5b9e\u9645\u4e0a\u6b63\u5728\u9ed8\u9ed8\u4e22\u5f03\u6709\u4ef7\u503c\u7684\u6570\u636e\u3002<\/li>\n<li>\u5982\u679c\u7981\u7528\u4e86\u6dd8\u6c70\uff0c\u5e94\u7528\u4f1a\u66f4\u5feb\u66b4\u9732\u9519\u8bef\uff1b\u8fd9\u867d\u7136\u75db\u82e6\uff0c\u5374\u8db3\u591f\u8bda\u5b9e\u3002<\/li>\n<li>\u5982\u679c\u53ea\u6709\u5e26 TTL \u7684 key \u80fd\u88ab\u6dd8\u6c70\uff0c\u90a3\u4e48\u90a3\u4e9b\u6ca1\u6709\u8fc7\u671f\u65f6\u95f4\u7684\u6301\u4e45 key \u5c31\u53ef\u80fd\u628a\u5b9e\u4f8b\u56f0\u5728\u6301\u7eed\u9ad8\u538b\u5faa\u73af\u4e2d\u3002<\/li>\n<\/ol>\n<p>\u6362\u53e5\u8bdd\u8bf4\uff0c\u6dd8\u6c70\u7b56\u7565\u4e0d\u80fd\u66ff\u4ee3\u5185\u5b58\u536b\u751f\u3002\u5b83\u662f\u6700\u540e\u4e00\u9053\u63a7\u5236\u7ebf\uff0c\u800c\u4e0d\u662f\u4e3a\u4e0d\u826f\u8bbe\u8ba1\u5f00\u8131\u7684\u501f\u53e3\u3002<\/p>\n<h2><strong>\u6301\u4e45\u5316\u4f1a\u5236\u9020\u77ed\u6682\u4f46\u771f\u5b9e\u5b58\u5728\u7684\u5185\u5b58\u538b\u529b<\/strong><\/h2>\n<p>\u5f88\u591a\u56e2\u961f\u4f4e\u4f30\u4e86\u540e\u53f0\u6301\u4e45\u5316\u4efb\u52a1\u4e0e\u6d41\u91cf\u9ad8\u5cf0\u76f8\u4e92\u53e0\u52a0\u65f6\u7684\u5f71\u54cd\u3002\u5728\u751f\u6210\u5feb\u7167\u6216\u91cd\u5199\u65e5\u5fd7\u671f\u95f4\uff0c\u5185\u5b58\u8868\u73b0\u5f80\u5f80\u4f1a\u6bd4\u7a33\u6001\u9884\u671f\u66f4\u7cdf\u3002\u5b98\u65b9\u6587\u6863\u5efa\u8bae\uff0c\u5728\u542f\u7528\u6301\u4e45\u5316\u6216\u590d\u5236\u65f6\uff0c\u4e3a\u7f13\u51b2\u533a\u9884\u7559\u8db3\u591f\u7a7a\u95f2 RAM\uff0c\u56e0\u4e3a\u5185\u5b58\u6838\u7b97\u7edd\u4e0d\u53ea\u6709\u7528\u6237 key \u672c\u8eab\u3002<\/p>\n<p>\u8fd9\u610f\u5473\u7740\uff0c\u5982\u679c\u4e00\u53f0\u670d\u52a1\u5668\u4ec5\u6309\u5e73\u5747\u6570\u636e\u96c6\u5bb9\u91cf\u6765\u89c4\u5212\u8d44\u6e90\uff0c\u90a3\u4e48\u5b83\u5176\u5b9e\u5904\u5728\u5371\u9669\u8fb9\u7f18\u3002\u5bf9\u4e8e\u5199\u5165\u8d1f\u8f7d\u5177\u6709\u7a81\u53d1\u7279\u5f81\u7684\u4e1a\u52a1\uff0c\u4e00\u6b21\u540e\u53f0\u6301\u4e45\u5316\u5c31\u53ef\u80fd\u4e0e\u7f13\u5b58\u56de\u586b\u4e8b\u4ef6\u649e\u5728\u4e00\u8d77\uff0c\u4ece\u800c\u5236\u9020\u51fa\u4e00\u6b21\u5267\u70c8\u4f46\u5b8c\u5168\u53ef\u4ee5\u89e3\u91ca\u7684\u5185\u5b58\u66b4\u6da8\u3002<\/p>\n<h2><strong>\u5ba2\u6237\u7aef\u5185\u5b58\u540c\u6837\u662f\u6545\u4e8b\u7684\u4e00\u90e8\u5206<\/strong><\/h2>\n<p>Redis \u6545\u969c\u5f80\u5f80\u88ab\u5168\u90e8\u5f52\u548e\u4e8e\u6570\u636e\u672c\u8eab\uff0c\u4f46\u8fde\u63a5\u6a21\u5f0f\u4e5f\u53ef\u80fd\u662f\u9690\u853d\u7684\u653e\u5927\u5668\u3002\u5b98\u65b9\u5173\u4e8e\u5ba2\u6237\u7aef\u7684\u8bf4\u660e\u6307\u51fa\uff0c\u5ba2\u6237\u7aef\u8fde\u63a5\u4f1a\u6d88\u8017\u5185\u5b58\uff0c\u800c\u5927\u91cf\u5ba2\u6237\u7aef\u5b8c\u5168\u53ef\u80fd\u5bf9\u603b\u5185\u5b58\u4f7f\u7528\u9020\u6210\u5b9e\u8d28\u5f71\u54cd\u3002<\/p>\n<ul>\n<li>\u8fc7\u5927\u7684\u8fde\u63a5\u6c60<\/li>\n<li>\u8de8\u591a\u4e2a\u670d\u52a1\u957f\u671f\u95f2\u7f6e\u5374\u4e0d\u5173\u95ed\u7684\u8fde\u63a5<\/li>\n<li>\u5e26\u6709\u5927\u91cf\u5ba2\u6237\u7aef\u72b6\u6001\u7684\u53d1\u5e03\u8ba2\u9605\u6216\u963b\u585e\u6a21\u5f0f<\/li>\n<li>\u6162\u6d88\u8d39\u8005\u5bfc\u81f4\u8f93\u51fa\u7f13\u51b2\u533a\u81a8\u80c0<\/li>\n<\/ul>\n<p>\u5982\u679c\u4f60\u7684\u6570\u636e\u96c6\u770b\u8d77\u6765\u5e76\u4e0d\u79bb\u8c31\uff0c\u4f46\u5185\u5b58\u4ecd\u7136\u6301\u7eed\u6500\u5347\uff0c\u90a3\u4e48\u5728\u602a\u7f6a\u5206\u914d\u5668\u4e4b\u524d\uff0c\u5148\u68c0\u67e5\u5ba2\u6237\u7aef\u4fa7\u3002<\/p>\n<h2><strong>\u4e00\u5957\u9002\u5408\u5de5\u7a0b\u5e08\u7684\u5b9e\u6218\u6392\u969c\u6d41\u7a0b<\/strong><\/h2>\n<p>\u5f53\u751f\u4ea7\u7ea7\u670d\u52a1\u5668\u79df\u7528\u8282\u70b9\u4e0a\u51fa\u73b0 Redis \u5185\u5b58\u66b4\u6da8\u65f6\uff0c\u901f\u5ea6\u56fa\u7136\u91cd\u8981\uff0c\u4f46\u76f2\u76ee\u8c03\u53c2\u540c\u6837\u5371\u9669\u3002\u66f4\u7a33\u59a5\u7684\u6d41\u7a0b\u901a\u5e38\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li><strong>\u786e\u8ba4\u589e\u957f\u5f62\u6001\u3002<\/strong> \u5230\u5e95\u662f\u6570\u636e\u96c6\u589e\u957f\u3001RSS \u4fdd\u7559\u3001\u5ba2\u6237\u7aef\u5185\u5b58\uff0c\u8fd8\u662f\u77ed\u6682\u7684\u6301\u4e45\u5316\u4e8b\u4ef6\uff1f<\/li>\n<li><strong>\u68c0\u67e5\u62a4\u680f\u662f\u5426\u5b58\u5728\u3002<\/strong> \u662f\u5426\u8bbe\u7f6e\u4e86 <code>maxmemory<\/code>\uff1f\u6dd8\u6c70\u6a21\u5f0f\u662f\u5426\u4e0e\u5de5\u4f5c\u8d1f\u8f7d\u5339\u914d\uff1f\u5b98\u65b9\u6587\u6863\u5efa\u8bae\u663e\u5f0f\u8bbe\u7f6e\u4e0a\u9650\u3002<\/li>\n<li><strong>\u62bd\u6837 key \u7c7b\u522b\u3002<\/strong> \u627e\u51fa\u5728\u6545\u969c\u671f\u95f4\u6269\u5f20\u7684\u662f\u54ea\u4e9b\u524d\u7f00\u3001\u5bf9\u8c61\u7c7b\u578b\u6216\u96c6\u5408\u3002<\/li>\n<li><strong>\u5ba1\u8ba1 TTL \u8986\u76d6\u7387\u3002<\/strong> \u786e\u8ba4\u539f\u672c\u5e94\u8be5\u5e26\u8fc7\u671f\u65f6\u95f4\u7684\u7f13\u5b58\u5199\u5165\u8def\u5f84\u662f\u5426\u771f\u7684\u7edf\u4e00\u9644\u5e26\u4e86\u8fc7\u671f\u8bbe\u7f6e\u3002<\/li>\n<li><strong>\u5bf9\u9f50\u65f6\u95f4\u7ebf\u3002<\/strong> \u628a\u66b4\u6da8\u4e0e\u53d1\u5e03\u3001\u5b9a\u65f6\u4efb\u52a1\u3001\u6545\u969c\u5207\u6362\u6216\u6d41\u91cf\u6ce2\u5cf0\u8fdb\u884c\u6bd4\u5bf9\u3002<\/li>\n<li><strong>\u590d\u6838\u8fde\u63a5\u538b\u529b\u3002<\/strong> \u7edf\u8ba1\u5ba2\u6237\u7aef\u6570\u91cf\uff0c\u5e76\u68c0\u67e5\u662f\u5426\u5b58\u5728\u4f1a\u653e\u5927\u5355\u8fde\u63a5\u5185\u5b58\u6210\u672c\u7684\u6a21\u5f0f\u3002<\/li>\n<\/ol>\n<p>\u8fd9\u6837\u7684\u987a\u5e8f\u53ef\u4ee5\u907f\u514d\u8fc7\u5ea6\u53cd\u5e94\u3002\u91cd\u542f\u5b9e\u4f8b\u53ef\u80fd\u6682\u65f6\u538b\u4f4e RSS\uff0c\u4f46\u5982\u679c\u771f\u6b63\u7684\u95ee\u9898\u662f\u4e0d\u53d7\u63a7\u7684 key \u589e\u957f\uff0c\u90a3\u4e48\u4e0b\u4e00\u6b21\u66b4\u6da8\u5176\u5b9e\u5df2\u7ecf\u5728\u8def\u4e0a\u4e86\u3002<\/p>\n<h2><strong>\u5982\u4f55\u964d\u4f4e\u4e0b\u4e00\u6b21\u6545\u969c\u518d\u6b21\u53d1\u751f\u7684\u6982\u7387<\/strong><\/h2>\n<p>\u9884\u9632\u95ee\u9898\u7684\u5173\u952e\uff0c\u5e76\u4e0d\u662f\u67d0\u4e00\u4e2a\u201c\u795e\u7ea7\u53c2\u6570\u201d\uff0c\u800c\u662f\u6734\u7d20\u800c\u6301\u7eed\u7684\u4e00\u81f4\u6027\u3002<\/p>\n<ul>\n<li>\u8bbe\u7f6e\u73b0\u5b9e\u7684\u5185\u5b58\u4e0a\u9650\uff0c\u5e76\u4fdd\u7559\u8fd0\u7ef4\u4f59\u91cf\u3002<\/li>\n<li>\u9009\u62e9\u4e0e\u7f13\u5b58\u8bed\u4e49\u76f8\u5339\u914d\u7684\u6dd8\u6c70\u7b56\u7565\uff0c\u800c\u4e0d\u662f\u57fa\u4e8e\u4e00\u53a2\u60c5\u613f\u7684\u5047\u8bbe\u3002<\/li>\n<li>\u5728\u5e94\u7528\u8fb9\u754c\u5f3a\u5236 TTL\uff0c\u800c\u4e0d\u662f\u53ea\u9760\u56e2\u961f\u7ea6\u5b9a\u3002<\/li>\n<li>\u5728\u4ee3\u7801\u8bc4\u5ba1\u9636\u6bb5\u5c31\u62d2\u7edd big key \u6a21\u5f0f\u3002<\/li>\n<li>\u540c\u65f6\u76d1\u63a7\u903b\u8f91\u5185\u5b58\u4e0e RSS\uff0c\u4f7f\u788e\u7247\u5316\u95ee\u9898\u53ef\u89c1\u3002<\/li>\n<li>\u4e3a\u6301\u4e45\u5316\u4e0e\u590d\u5236\u9884\u7559\u6210\u672c\uff0c\u800c\u4e0d\u662f\u628a\u5b83\u4eec\u5f53\u6210\u201c\u514d\u8d39\u529f\u80fd\u201d\u3002<\/li>\n<li>\u5173\u6ce8\u5ba2\u6237\u7aef\u6570\u91cf\u53ca\u7f13\u51b2\u533a\u884c\u4e3a\u3002<\/li>\n<\/ul>\n<p>\u5bf9\u4e8e\u5728\u65e5\u672c\u57fa\u7840\u8bbe\u65bd\u4e0a\u8fd0\u884c\u65f6\u5ef6\u654f\u611f\u578b\u670d\u52a1\u7684\u56e2\u961f\u800c\u8a00\uff0c\u8fd9\u4e9b\u505a\u6cd5\u5c24\u5176\u6709\u4ef7\u503c\uff0c\u56e0\u4e3a\u5b83\u4eec\u80fd\u8ba9\u7f13\u5b58\u5c42\u5728\u533a\u57df\u6027\u6d41\u91cf\u96c6\u4e2d\u7684\u573a\u666f\u4e0b\u4f9d\u7136\u4fdd\u6301\u53ef\u9884\u6d4b\u8868\u73b0\u3002\u826f\u597d\u7684 Redis \u536b\u751f\u4e60\u60ef\u770b\u8d77\u6765\u5e76\u4e0d\u70ab\u6280\uff0c\u4f46\u5b83\u786e\u5b9e\u80fd\u963b\u6b62\u4e00\u4e2a\u5608\u6742\u7684\u7f13\u5b58\u5c42\u6f14\u53d8\u6210\u6574\u53f0\u8282\u70b9\u7684\u6545\u969c\u6e90\u3002<\/p>\n<h2><strong>\u7ed3\u8bba<\/strong><\/h2>\n<p>Redis \u5185\u5b58\u66b4\u6da8\u901a\u5e38\u53ea\u662f\u67d0\u79cd\u8bbe\u8ba1\u6216\u8fd0\u7ef4\u95ee\u9898\u6d6e\u51fa\u6c34\u9762\u7684\u7ed3\u679c\uff0c\u800c\u4e0d\u662f\u968f\u673a\u4e8b\u4ef6\u3002\u5e94\u5148\u4ece\u5185\u5b58\u8ba1\u6570\u5668\u5165\u624b\uff0c\u6bd4\u5bf9\u903b\u8f91\u4f7f\u7528\u91cf\u4e0e RSS\uff0c\u68c0\u67e5 TTL \u8986\u76d6\u7387\uff0c\u6392\u67e5 big key\uff0c\u5e76\u628a\u6301\u4e45\u5316\u4e0e\u5ba2\u6237\u7aef\u5f00\u9500\u7eb3\u5165\u5206\u6790\u8303\u56f4\u4e4b\u540e\u518d\u505a\u8c03\u6574\u3002\u5728\u7eaa\u5f8b\u826f\u597d\u7684\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u4e2d\uff0cRedis \u5185\u5b58\u66b4\u6da8\u4e8b\u4ef6\u5176\u5b9e\u65e2\u66f4\u5bb9\u6613\u89e3\u91ca\uff0c\u4e5f\u66f4\u5bb9\u6613\u9884\u9632\u3002\u6700\u6709\u6548\u7684\u4fee\u590d\u65b9\u6848\u5f80\u5f80\u5e76\u4e0d\u620f\u5267\u5316\uff1a\u66f4\u4e25\u683c\u7684\u8fc7\u671f\u63a7\u5236\u3001\u66f4\u5408\u7406\u7684 key \u5efa\u6a21\u3001\u66f4\u73b0\u5b9e\u7684\u5185\u5b58\u4e0a\u9650\uff0c\u4ee5\u53ca\u5728\u7f13\u5b58\u6700\u7e41\u5fd9\u65f6\u4ecd\u7136\u7559\u6709\u4f59\u91cf\u7684\u8d44\u6e90\u89c4\u5212\u3002Redis \u5185\u5b58\u66b4\u6da8\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u771f\u5b9e\u7684\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u4e2d\uff0cRedis \u5185\u5b58\u66b4\u6da8\u5f88\u5c11\u610f\u5473\u7740\u201c\u670d\u52a1\u5668\u7a81\u7136\u62bd\u98ce\u4e86\u201d\u3002\u5b83\u901a\u5e38\u6307\u5411\u67d0\u79cd\u53ef\u4ee5\u88ab\u5b9a\u4f4d\u7684\u6a21\u5f0f\uff1a\u4f8b\u5982 key \u6570\u91cf\u589e\u957f\u3001\u6dd8\u6c70\u884c\u4e3a\u5f02\u5e38\u3001\u6301\u4e45\u5316\u5f00\u9500\u3001\u5206\u914d\u5668\u590d\u7528\uff0c\u6216\u5ba2\u6237\u7aef\u538b\u529b\u5347\u9ad8\u3002\u5bf9\u4e8e\u5728\u65e5\u672c\u57fa\u7840\u8bbe\u65bd\u4e0a\u8fd0\u884c\u4f4e\u5ef6\u8fdf\u4e1a\u52a1\u7684\u5de5\u7a0b\u5e08\u6765\u8bf4\uff0c\u8fd9\u4e00\u70b9\u5c24\u4e3a\u5173\u952e\uff0c\u56e0\u4e3a Redis \u5185\u5b58\u66b4\u6da8\u5f80\u5f80\u4f1a\u8fdb\u4e00\u6b65\u5f15\u53d1 swap \u6d3b\u52a8\u3001\u5c3e\u5ef6\u8fdf\u4e0a\u5347\u3001\u5199\u5165\u5931\u8d25\uff0c\u4ee5\u53ca\u540c\u4e00\u8282\u70b9\u4e0a\u5176\u4ed6\u670d\u52a1\u88ab\u8fde\u5e26\u5e72\u6270\u3002\u597d\u6d88\u606f\u662f\uff0c\u53ea\u8981\u6309\u7167\u6b63\u786e\u987a\u5e8f\u68c0\u67e5\u5185\u5b58\u8ba1\u6570\u5668\u3001TTL \u7eaa\u5f8b\u3001key \u7ed3\u6784\u4e0e\u5de5\u4f5c\u8d1f\u8f7d\u65f6\u5e8f\uff0c\u5927\u591a\u6570\u6545\u969c\u90fd\u80fd\u89e3\u91ca\u6e05\u695a\u3002 Redis \u4e4b\u6240\u4ee5\u5feb\uff0c\u662f\u56e0\u4e3a\u5b83\u628a\u5de5\u4f5c\u6570\u636e\u4fdd\u5b58\u5728\u5185\u5b58\u4e2d\uff1b\u4f46\u4e5f\u6b63\u56e0\u4e3a\u5982\u6b64\uff0c\u5185\u5b58\u884c\u4e3a\u4f1a\u88ab\u653e\u5927\u5f97\u975e\u5e38\u660e\u663e\u3002\u5173\u7cfb\u578b\u6570\u636e\u5e93\u5f80\u5f80\u8fd8\u80fd\u501f\u52a9\u5b58\u50a8\u5ef6\u8fdf\u6682\u65f6\u63a9\u76d6\u4f4e\u6548\u8bbe\u8ba1\uff0c\u800c Redis 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