{"id":185784,"date":"2024-11-11T00:28:18","date_gmt":"2024-11-10T16:28:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/185784\/"},"modified":"2024-11-11T00:28:19","modified_gmt":"2024-11-10T16:28:19","slug":"%e6%95%b8%e6%93%9aredis%e5%84%aa%e9%9b%85%e5%9c%b0%e6%b8%85%e7%90%867%e5%a4%a9%e5%89%8d%e7%9a%84%e6%95%b8%e6%93%9a%ef%bc%88redis%e6%b8%85%e7%90%86%e8%b6%85%e9%81%8e7%e5%a4%a9%e7%9a%84%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/185784\/","title":{"rendered":"\u6578\u64daRedis\u512a\u96c5\u5730\u6e05\u74067\u5929\u524d\u7684\u6578\u64da\uff08redis\u6e05\u7406\u8d85\u904e7\u5929\u7684\uff09"},"content":{"rendered":"

\u6578\u64daRedis\u512a\u96c5\u5730\u6e05\u74067\u5929\u524d\u7684\u6578\u64da\uff08redis\u6e05\u7406\u8d85\u904e7\u5929\u7684\uff09<\/h1>\n

\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u7684\u7ba1\u7406\u548c\u6e05\u7406\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u4e2d\uff0c\u5305\u62ec\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u5be6\u6642\u6578\u64da\u8655\u7406\u7b49\u3002\u7136\u800c\uff0c\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\uff0cRedis\u4e2d\u7684\u6578\u64da\u91cf\u53ef\u80fd\u6703\u8fc5\u901f\u589e\u9577\uff0c\u7279\u5225\u662f\u7576\u6211\u5011\u9700\u8981\u5b58\u5132\u5927\u91cf\u7684\u81e8\u6642\u6578\u64da\u6642\u3002\u70ba\u4e86\u4fdd\u6301\u7cfb\u7d71\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\uff0c\u5b9a\u671f\u6e05\u7406\u904e\u671f\u6578\u64da\u662f\u5fc5\u8981\u7684\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u512a\u96c5\u5730\u6e05\u7406Redis\u4e2d\u8d85\u904e7\u5929\u7684\u6578\u64da\u3002<\/p>\n

Redis\u6578\u64da\u904e\u671f\u6a5f\u5236<\/h2>\n

Redis\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u5f0f\u4f86\u7ba1\u7406\u6578\u64da\u7684\u904e\u671f\u3002\u6bcf\u500b\u9375\u90fd\u53ef\u4ee5\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\uff0c\u7576\u9019\u500b\u6642\u9593\u5230\u9054\u6642\uff0c\u8a72\u9375\u5c07\u81ea\u52d5\u88ab\u522a\u9664\u3002\u9019\u4e00\u7279\u6027\u4f7f\u5f97Redis\u975e\u5e38\u9069\u5408\u7528\u65bc\u5b58\u5132\u81e8\u6642\u6578\u64da\uff0c\u5982\u6703\u8a71\u4fe1\u606f\u6216\u7de9\u5b58\u6578\u64da\u3002<\/p>\n

\u4f7f\u7528TTL\u547d\u4ee4\u6aa2\u67e5\u904e\u671f\u6642\u9593<\/h2>\n

\u5728\u6e05\u7406\u6578\u64da\u4e4b\u524d\uff0c\u6211\u5011\u9700\u8981\u4e86\u89e3\u54ea\u4e9b\u6578\u64da\u5df2\u7d93\u904e\u671f\u3002Redis\u63d0\u4f9b\u4e86TTL\uff08Time To Live\uff09\u547d\u4ee4\u4f86\u6aa2\u67e5\u67d0\u500b\u9375\u7684\u5269\u9918\u751f\u5b58\u6642\u9593\u3002\u4f7f\u7528\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n

TTL key_name<\/code><\/pre>\n
\u5982\u679c\u8fd4\u56de\u503c\u70ba-1\uff0c\u8868\u793a\u8a72\u9375\u4e0d\u6703\u904e\u671f\uff1b\u5982\u679c\u8fd4\u56de\u503c\u70ba-2\uff0c\u8868\u793a\u8a72\u9375\u4e0d\u5b58\u5728\uff1b\u5982\u679c\u8fd4\u56de\u4e00\u500b\u6b63\u6574\u6578\uff0c\u5247\u8868\u793a\u8a72\u9375\u7684\u5269\u9918\u751f\u5b58\u6642\u9593\uff08\u4ee5\u79d2\u70ba\u55ae\u4f4d\uff09\u3002<\/p>\n
\u6e05\u7406\u8d85\u904e7\u5929\u7684\u6578\u64da<\/h2>\n
\u8981\u6e05\u7406\u8d85\u904e7\u5929\u7684\u6578\u64da\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528Redis\u7684SCAN\u547d\u4ee4\u4f86\u904d\u6b77\u6240\u6709\u9375\uff0c\u7136\u5f8c\u6aa2\u67e5\u6bcf\u500b\u9375\u7684\u904e\u671f\u6642\u9593\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\u4ee3\u78bc\uff0c\u5c55\u793a\u5982\u4f55\u5be6\u73fe\u9019\u4e00\u904e\u7a0b\uff1a<\/p>\n
import redis\nimport time\n\n# \u9023\u63a5\u5230Redis\nr = redis.StrictRedis(host='localhost', port=6379, db=0)\n\n# \u7576\u524d\u6642\u9593\ncurrent_time = time.time()\n\n# \u904d\u6b77\u6240\u6709\u9375\ncursor = 0\nwhile True:\n    cursor, keys = r.scan(cursor)\n    for key in keys:\n        # \u7372\u53d6\u9375\u7684\u904e\u671f\u6642\u9593\n        ttl = r.ttl(key)\n        if ttl != -1 and ttl < 0:  # \u5982\u679c\u9375\u5df2\u7d93\u904e\u671f\n            r.delete(key)  # \u522a\u9664\u9375\n    if cursor == 0:\n        break\n<\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u9023\u63a5\u5230Redis\u6578\u64da\u5eab\uff0c\u7136\u5f8c\u4f7f\u7528SCAN\u547d\u4ee4\u904d\u6b77\u6240\u6709\u9375\u3002\u5c0d\u65bc\u6bcf\u500b\u9375\uff0c\u6211\u5011\u6aa2\u67e5\u5176TTL\u503c\uff0c\u5982\u679c\u8a72\u9375\u5df2\u7d93\u904e\u671f\uff0c\u6211\u5011\u5c31\u5c07\u5176\u522a\u9664\u3002<\/p>\n
\u4f7f\u7528\u5b9a\u6642\u4efb\u52d9\u81ea\u52d5\u6e05\u7406<\/h2>\n
\u9664\u4e86\u624b\u52d5\u6e05\u7406\uff0c\u6211\u5011\u9084\u53ef\u4ee5\u8a2d\u7f6e\u5b9a\u6642\u4efb\u52d9\u4f86\u81ea\u52d5\u6e05\u7406\u904e\u671f\u6578\u64da\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4f7f\u7528cron\u4f5c\u696d\u6216\u5176\u4ed6\u4efb\u52d9\u8abf\u5ea6\u5de5\u5177\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684cron\u4f5c\u696d\u793a\u4f8b\uff0c\u6bcf\u5929\u51cc\u66681\u9ede\u57f7\u884c\u6e05\u7406\u8173\u672c\uff1a<\/p>\n
0 1 * * * \/usr\/bin\/python \/path\/to\/your\/cleanup_script.py<\/code><\/pre>\n
\u7d50\u8ad6<\/h2>\n
\u5728\u4f7f\u7528Redis\u6642\uff0c\u5b9a\u671f\u6e05\u7406\u904e\u671f\u6578\u64da\u662f\u4fdd\u6301\u7cfb\u7d71\u6027\u80fd\u7684\u95dc\u9375\u3002\u901a\u904e\u4f7f\u7528TTL\u547d\u4ee4\u6aa2\u67e5\u904e\u671f\u6642\u9593\uff0c\u4e26\u7d50\u5408SCAN\u547d\u4ee4\u904d\u6b77\u6240\u6709\u9375\uff0c\u6211\u5011\u53ef\u4ee5\u6709\u6548\u5730\u6e05\u7406\u8d85\u904e7\u5929\u7684\u6578\u64da\u3002\u6b64\u5916\uff0c\u8a2d\u7f6e\u5b9a\u6642\u4efb\u52d9\u53ef\u4ee5\u9032\u4e00\u6b65\u81ea\u52d5\u5316\u9019\u4e00\u904e\u7a0b\uff0c\u6e1b\u5c11\u624b\u52d5\u5e72\u9810\u7684\u9700\u8981\u3002<\/p>\n
\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684VPS<\/a>\u89e3\u6c7a\u65b9\u6848\u53ef\u4ee5\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002\u7121\u8ad6\u662f\u4f7f\u7528Redis\u9084\u662f\u5176\u4ed6\u6578\u64da\u5eab\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u53ca\u6642\u6e05\u7406\u548c\u7ba1\u7406\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u512a\u96c5\u5730\u6e05\u7406Redis\u4e2d\u8d85\u904e7\u5929\u7684\u6578\u64da\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u4fdd\u6301\u6574\u6f54\u8207\u9ad8\u6548\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u8207\u7ba1\u7406\u4fbf\u5229\u6027\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-185784","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/185784","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=185784"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/185784\/revisions"}],"predecessor-version":[{"id":185785,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/185784\/revisions\/185785"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=185784"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=185784"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=185784"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}