{"id":125557,"date":"2024-10-25T23:38:24","date_gmt":"2024-10-25T15:38:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/125557\/"},"modified":"2024-10-25T23:38:24","modified_gmt":"2024-10-25T15:38:24","slug":"redis-%e5%bf%ab%e9%80%9f%e6%b8%85%e7%90%86%e9%9b%86%e5%90%88%e6%95%b8%e6%93%9a%e7%9a%84%e6%9c%89%e6%95%88%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/125557\/","title":{"rendered":"Redis \u5feb\u901f\u6e05\u7406\u96c6\u5408\u6578\u64da\u7684\u6709\u6548\u65b9\u6cd5"},"content":{"rendered":"

Redis \u5feb\u901f\u6e05\u7406\u96c6\u5408\u6578\u64da\u7684\u6709\u6548\u65b9\u6cd5<\/h1>\n

\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0cRedis \u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\uff0c\u5305\u62ec\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u5b58\u5132\u7b49\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u5982\u4f55\u6709\u6548\u5730\u6e05\u7406\u96c6\u5408\u6578\u64da\u6210\u70ba\u4e86\u958b\u767c\u8005\u9700\u8981\u9762\u5c0d\u7684\u4e00\u500b\u91cd\u8981\u8ab2\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5e7e\u7a2e\u5728 Redis \u4e2d\u5feb\u901f\u6e05\u7406\u96c6\u5408\u6578\u64da\u7684\u6709\u6548\u65b9\u6cd5\u3002<\/p>\n

1. \u4f7f\u7528 SREM \u547d\u4ee4\u522a\u9664\u96c6\u5408\u4e2d\u7684\u5143\u7d20<\/h2>\n

Redis \u63d0\u4f9b\u4e86 SREM \u547d\u4ee4\uff0c\u5141\u8a31\u7528\u6236\u5f9e\u96c6\u5408\u4e2d\u522a\u9664\u4e00\u500b\u6216\u591a\u500b\u6307\u5b9a\u7684\u5143\u7d20\u3002\u9019\u662f\u4e00\u500b\u975e\u5e38\u76f4\u63a5\u7684\u65b9\u6cd5\uff0c\u9069\u5408\u7528\u65bc\u522a\u9664\u5df2\u77e5\u7684\u5143\u7d20\u3002<\/p>\n

 SREM key member1 [member2 ...]\n<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba “myset” \u7684\u96c6\u5408\uff0c\u4e26\u5e0c\u671b\u522a\u9664\u5143\u7d20 “member1” \u548c “member2″\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
 SREM myset member1 member2\n<\/code><\/pre>\n
2. \u4f7f\u7528 ZREMRANGEBYSCORE \u522a\u9664\u7bc4\u570d\u5167\u7684\u5143\u7d20<\/h2>\n
\u5c0d\u65bc\u6709\u5e8f\u96c6\u5408\uff0cRedis \u63d0\u4f9b\u4e86 ZREMRANGEBYSCORE \u547d\u4ee4\uff0c\u5141\u8a31\u7528\u6236\u6839\u64da\u5206\u6578\u7bc4\u570d\u522a\u9664\u5143\u7d20\u3002\u9019\u5c0d\u65bc\u9700\u8981\u6839\u64da\u67d0\u4e9b\u689d\u4ef6\u6e05\u7406\u6578\u64da\u7684\u60c5\u6cc1\u975e\u5e38\u6709\u7528\u3002<\/p>\n
 ZREMRANGEBYSCORE key min max\n<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u82e5\u8981\u522a\u9664\u5206\u6578\u5728 0 \u5230 10 \u4e4b\u9593\u7684\u6240\u6709\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n
 ZREMRANGEBYSCORE mysortedset 0 10\n<\/code><\/pre>\n
3. \u4f7f\u7528 EXPIRE \u547d\u4ee4\u8a2d\u7f6e\u904e\u671f\u6642\u9593<\/h2>\n
\u5982\u679c\u5e0c\u671b\u81ea\u52d5\u6e05\u7406\u96c6\u5408\u4e2d\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528 EXPIRE \u547d\u4ee4\u70ba\u96c6\u5408\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u3002\u7576\u904e\u671f\u6642\u9593\u5230\u9054\u6642\uff0cRedis \u5c07\u81ea\u52d5\u522a\u9664\u8a72\u96c6\u5408\u3002<\/p>\n
 EXPIRE key seconds\n<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u82e5\u8981\u5c07 “myset” \u8a2d\u7f6e\u70ba 60 \u79d2\u5f8c\u904e\u671f\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n
 EXPIRE myset 60\n<\/code><\/pre>\n
4. \u4f7f\u7528 Lua \u8173\u672c\u9032\u884c\u6279\u91cf\u522a\u9664<\/h2>\n
\u5c0d\u65bc\u9700\u8981\u9032\u884c\u8907\u96dc\u908f\u8f2f\u7684\u6e05\u7406\u64cd\u4f5c\uff0c\u4f7f\u7528 Lua \u8173\u672c\u662f\u4e00\u500b\u9748\u6d3b\u7684\u9078\u64c7\u3002Redis \u652f\u6301\u5728\u670d\u52d9\u5668\u7aef\u57f7\u884c Lua \u8173\u672c\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u7db2\u7d61\u5ef6\u9072\u4e26\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n
\nEVAL \"for i, v in ipairs(redis.call('SMEMBERS', KEYS[1])) do if v == ARGV[1] then redis.call('SREM', KEYS[1], v) end end\" 1 myset member1\n<\/code><\/pre>\n
\u4e0a\u8ff0\u8173\u672c\u5c07\u5f9e “myset” \u4e2d\u522a\u9664\u6240\u6709\u7b49\u65bc “member1” \u7684\u5143\u7d20\u3002<\/p>\n
5. \u4f7f\u7528 SCAN \u547d\u4ee4\u9032\u884c\u589e\u91cf\u904d\u6b77<\/h2>\n
\u5728\u8655\u7406\u5927\u578b\u96c6\u5408\u6642\uff0c\u4f7f\u7528 SCAN \u547d\u4ee4\u53ef\u4ee5\u907f\u514d\u963b\u585e\u64cd\u4f5c\u3002SCAN \u547d\u4ee4\u5141\u8a31\u7528\u6236\u589e\u91cf\u904d\u6b77\u96c6\u5408\uff0c\u4e26\u5728\u904d\u6b77\u904e\u7a0b\u4e2d\u9032\u884c\u522a\u9664\u64cd\u4f5c\u3002<\/p>\n
\nlocal cursor = \"0\"\nrepeat\n    local result = redis.call('SSCAN', KEYS[1], cursor)\n    cursor = result[1]\n    for _, member in ipairs(result[2]) do\n        if some_condition(member) then\n            redis.call('SREM', KEYS[1], member)\n        end\n    end\nuntil cursor == \"0\"\n<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07\u904d\u6b77 “myset” \u4e2d\u7684\u6240\u6709\u5143\u7d20\uff0c\u4e26\u6839\u64da\u67d0\u4e9b\u689d\u4ef6\u522a\u9664\u7b26\u5408\u689d\u4ef6\u7684\u5143\u7d20\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728 Redis \u4e2d\u6e05\u7406\u96c6\u5408\u6578\u64da\u7684\u65b9\u6cd5\u591a\u7a2e\u591a\u6a23\uff0c\u5f9e\u57fa\u672c\u7684 SREM \u547d\u4ee4\u5230\u66f4\u8907\u96dc\u7684 Lua \u8173\u672c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u65b9\u6848\u3002\u6709\u6548\u7684\u6578\u64da\u7ba1\u7406\u4e0d\u50c5\u80fd\u63d0\u9ad8\u7cfb\u7d71\u6027\u80fd\uff0c\u9084\u80fd\u6e1b\u5c11\u8cc7\u6e90\u6d6a\u8cbb\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5728 \u9999\u6e2fVPS<\/a> \u4e0a\u904b\u884c Redis\uff0c\u6216\u5c0b\u627e\u5176\u4ed6 \u4f3a\u670d\u5668<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22Redis\u4e2d\u5feb\u901f\u6e05\u7406\u96c6\u5408\u6578\u64da\u7684\u6709\u6548\u65b9\u6cd5\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u512a\u5316\u6027\u80fd\uff0c\u7c21\u5316\u64cd\u4f5c\u6d41\u7a0b\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-125557","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/125557","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=125557"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/125557\/revisions"}],"predecessor-version":[{"id":125558,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/125557\/revisions\/125558"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=125557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=125557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=125557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}