{"id":154349,"date":"2024-11-02T15:04:19","date_gmt":"2024-11-02T07:04:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/154349\/"},"modified":"2024-11-02T15:04:20","modified_gmt":"2024-11-02T07:04:20","slug":"%e5%ae%9a%e6%99%82%e9%81%8e%e6%9c%9fredis%e7%9a%84%e5%a4%9a%e7%b7%9a%e7%a8%8b%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88%ef%bc%88redis%e9%81%8e%e6%9c%9f-%e5%a4%9a%e7%b7%9a%e7%a8%8b%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/154349\/","title":{"rendered":"\u5b9a\u6642\u904e\u671fRedis\u7684\u591a\u7dda\u7a0b\u89e3\u6c7a\u65b9\u6848\uff08redis\u904e\u671f \u591a\u7dda\u7a0b\uff09"},"content":{"rendered":"

\u5b9a\u6642\u904e\u671fRedis\u7684\u591a\u7dda\u7a0b\u89e3\u6c7a\u65b9\u6848\uff08redis\u904e\u671f \u591a\u7dda\u7a0b\uff09<\/h1>\n

Redis\u662f\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u5b58\u5132\u7b49\u5834\u666f\u3002\u5176\u652f\u6301\u7684\u904e\u671f\u9375\u529f\u80fd\u4f7f\u5f97\u7528\u6236\u80fd\u5920\u81ea\u52d5\u522a\u9664\u4e0d\u518d\u9700\u8981\u7684\u6578\u64da\uff0c\u5f9e\u800c\u7bc0\u7701\u5b58\u5132\u7a7a\u9593\u548c\u63d0\u9ad8\u6027\u80fd\u3002\u7136\u800c\uff0c\u7576\u6578\u64da\u91cf\u9f90\u5927\u6642\uff0cRedis\u7684\u904e\u671f\u9375\u8655\u7406\u53ef\u80fd\u6703\u6210\u70ba\u6027\u80fd\u74f6\u9838\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528\u591a\u7dda\u7a0b\u6280\u8853\u4f86\u512a\u5316Redis\u7684\u904e\u671f\u9375\u8655\u7406\u3002<\/p>\n

Redis\u7684\u904e\u671f\u9375\u6a5f\u5236<\/h2>\n

Redis\u7684\u904e\u671f\u9375\u6a5f\u5236\u4e3b\u8981\u6709\u5169\u7a2e\u65b9\u5f0f\uff1a\u5b9a\u6642\u522a\u9664\u548c\u60f0\u6027\u522a\u9664\u3002\u5b9a\u6642\u522a\u9664\u662fRedis\u5b9a\u671f\u6aa2\u67e5\u6240\u6709\u9375\u7684\u904e\u671f\u6642\u9593\uff0c\u4e26\u522a\u9664\u5df2\u904e\u671f\u7684\u9375\uff1b\u800c\u60f0\u6027\u522a\u9664\u5247\u662f\u5728\u8a2a\u554f\u67d0\u500b\u9375\u6642\u6aa2\u67e5\u5176\u662f\u5426\u904e\u671f\uff0c\u82e5\u904e\u671f\u5247\u522a\u9664\u3002\u9019\u5169\u7a2e\u65b9\u5f0f\u5404\u6709\u512a\u7f3a\u9ede\uff0c\u4f46\u5728\u9ad8\u4e26\u767c\u5834\u666f\u4e0b\uff0c\u5b9a\u6642\u522a\u9664\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/p>\n

\u591a\u7dda\u7a0b\u7684\u5fc5\u8981\u6027<\/h2>\n

\u5728\u9ad8\u8ca0\u8f09\u7684\u74b0\u5883\u4e2d\uff0cRedis\u7684\u55ae\u7dda\u7a0b\u6a21\u578b\u53ef\u80fd\u7121\u6cd5\u6eff\u8db3\u6027\u80fd\u9700\u6c42\u3002\u7576\u904e\u671f\u9375\u7684\u6578\u91cf\u589e\u591a\u6642\uff0c\u5b9a\u6642\u522a\u9664\u7684\u904e\u7a0b\u53ef\u80fd\u6703\u5c0e\u81f4CPU\u8cc7\u6e90\u7684\u6d6a\u8cbb\uff0c\u4e26\u5f71\u97ff\u5176\u4ed6\u64cd\u4f5c\u7684\u97ff\u61c9\u6642\u9593\u3002\u56e0\u6b64\uff0c\u63a1\u7528\u591a\u7dda\u7a0b\u6280\u8853\u4f86\u8655\u7406\u904e\u671f\u9375\uff0c\u53ef\u4ee5\u6709\u6548\u63d0\u9ad8\u6027\u80fd\uff0c\u6e1b\u5c11\u5ef6\u9072\u3002<\/p>\n

\u591a\u7dda\u7a0b\u89e3\u6c7a\u65b9\u6848<\/h2>\n

\u5be6\u73feRedis\u7684\u591a\u7dda\u7a0b\u904e\u671f\u9375\u8655\u7406\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\u9032\u884c\uff1a<\/p>\n

1. \u4f7f\u7528Redis Cluster<\/h3>\n

Redis Cluster\u652f\u6301\u6578\u64da\u5206\u7247\uff0c\u9019\u610f\u5473\u8457\u53ef\u4ee5\u5c07\u6578\u64da\u5206\u6563\u5230\u591a\u500b\u7bc0\u9ede\u4e0a\u3002\u6bcf\u500b\u7bc0\u9ede\u53ef\u4ee5\u7368\u7acb\u8655\u7406\u81ea\u5df1\u7684\u904e\u671f\u9375\uff0c\u5f9e\u800c\u5be6\u73fe\u591a\u7dda\u7a0b\u7684\u6548\u679c\u3002\u9019\u6a23\u4e0d\u50c5\u63d0\u9ad8\u4e86\u904e\u671f\u9375\u7684\u8655\u7406\u901f\u5ea6\uff0c\u9084\u80fd\u5920\u63d0\u9ad8\u6574\u9ad4\u7cfb\u7d71\u7684\u53ef\u7528\u6027\u3002<\/p>\n

2. \u81ea\u5b9a\u7fa9\u904e\u671f\u9375\u8655\u7406\u908f\u8f2f<\/h3>\n

\u53ef\u4ee5\u901a\u904e\u7de8\u5beb\u81ea\u5b9a\u7fa9\u7684\u904e\u671f\u9375\u8655\u7406\u908f\u8f2f\u4f86\u5be6\u73fe\u591a\u7dda\u7a0b\u8655\u7406\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u500b\u5de5\u4f5c\u7dda\u7a0b\u4f86\u5b9a\u671f\u6aa2\u67e5\u548c\u522a\u9664\u904e\u671f\u9375\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684Python\u793a\u4f8b\uff1a<\/p>\n

import redis\nimport threading\nimport time\n\ndef delete_expired_keys(redis_client):\n    while True:\n        # \u7372\u53d6\u6240\u6709\u9375\n        keys = redis_client.keys('*')\n        for key in keys:\n            # \u6aa2\u67e5\u9375\u662f\u5426\u904e\u671f\n            if redis_client.ttl(key) < 0:\n                redis_client.delete(key)\n        time.sleep(1)  # \u6bcf\u79d2\u6aa2\u67e5\u4e00\u6b21\n\nif __name__ == "__main__":\n    r = redis.Redis(host='localhost', port=6379, db=0)\n    threads = []\n    for i in range(5):  # \u5275\u5efa5\u500b\u7dda\u7a0b\n        t = threading.Thread(target=delete_expired_keys, args=(r,))\n        threads.append(t)\n        t.start()\n\n    for t in threads:\n        t.join()\n<\/code><\/pre>\n
3. \u4f7f\u7528Redis\u7684Lua\u8173\u672c<\/h3>\n
Redis\u652f\u6301Lua\u8173\u672c\uff0c\u53ef\u4ee5\u5728\u670d\u52d9\u5668\u7aef\u57f7\u884c\u591a\u500b\u547d\u4ee4\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u7db2\u7d61\u5ef6\u9072\u3002\u901a\u904eLua\u8173\u672c\uff0c\u53ef\u4ee5\u5728\u4e00\u500b\u539f\u5b50\u64cd\u4f5c\u4e2d\u6aa2\u67e5\u548c\u522a\u9664\u904e\u671f\u9375\uff0c\u5f9e\u800c\u63d0\u9ad8\u6548\u7387\u3002<\/p>\n
local keys = redis.call('keys', '*')\nfor i=1, #keys do\n    if redis.call('ttl', keys[i]) < 0 then\n        redis.call('del', keys[i])\n    end\nend\n<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u5728\u9ad8\u4e26\u767c\u7684\u74b0\u5883\u4e2d\uff0cRedis\u7684\u904e\u671f\u9375\u8655\u7406\u53ef\u80fd\u6210\u70ba\u6027\u80fd\u74f6\u9838\u3002\u901a\u904e\u4f7f\u7528\u591a\u7dda\u7a0b\u6280\u8853\uff0c\u5982Redis Cluster\u3001\u81ea\u5b9a\u7fa9\u904e\u671f\u9375\u8655\u7406\u908f\u8f2f\u548cLua\u8173\u672c\uff0c\u53ef\u4ee5\u6709\u6548\u63d0\u9ad8\u904e\u671f\u9375\u7684\u8655\u7406\u6548\u7387\u3002\u9019\u4e9b\u65b9\u6cd5\u4e0d\u50c5\u80fd\u5920\u6e1b\u5c11\u5ef6\u9072\uff0c\u9084\u80fd\u63d0\u9ad8\u7cfb\u7d71\u7684\u6574\u9ad4\u6027\u80fd\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u9700\u6c42\u3002\u7121\u8ad6\u662f \u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22\u5b9a\u6642\u904e\u671fRedis\u7684\u591a\u7dda\u7a0b\u89e3\u6c7a\u65b9\u6848\uff0c\u63d0\u5347\u6027\u80fd\u8207\u6548\u7387\uff0c\u5be6\u73fe\u9ad8\u6548\u7684\u6578\u64da\u904e\u671f\u7ba1\u7406\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-154349","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154349","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=154349"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154349\/revisions"}],"predecessor-version":[{"id":154350,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154349\/revisions\/154350"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=154349"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=154349"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=154349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}