{"id":156690,"date":"2024-11-02T20:52:21","date_gmt":"2024-11-02T12:52:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/156690\/"},"modified":"2024-11-02T20:52:23","modified_gmt":"2024-11-02T12:52:23","slug":"%e5%88%86%e6%9e%90-redis-%e7%9c%8b%e9%96%80%e7%8b%97%e6%ba%90%e7%a2%bc%e5%88%86%e6%9e%90%e8%88%87%e5%af%a6%e8%b8%90%ef%bc%88redis-%e7%9c%8b%e9%96%80%e7%8b%97%e6%ba%90%e7%a2%bc%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/156690\/","title":{"rendered":"\u5206\u6790 Redis \u770b\u9580\u72d7\u6e90\u78bc\u5206\u6790\u8207\u5be6\u8e10\uff08Redis \u770b\u9580\u72d7\u6e90\u78bc\uff09"},"content":{"rendered":"

\u5206\u6790 Redis \u770b\u9580\u72d7\u6e90\u78bc\u5206\u6790\u8207\u5be6\u8e10\uff08Redis \u770b\u9580\u72d7\u6e90\u78bc\uff09<\/h1>\n

Redis \u662f\u4e00\u500b\u9ad8\u6548\u80fd\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u4e2d\uff0c\u5982\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u6301\u4e45\u5316\u7b49\u3002\u96a8\u8457 Redis \u7684\u4f7f\u7528\u8d8a\u4f86\u8d8a\u666e\u904d\uff0c\u5c0d\u65bc\u5176\u7a69\u5b9a\u6027\u548c\u53ef\u9760\u6027\u7684\u9700\u6c42\u4e5f\u96a8\u4e4b\u589e\u52a0\u3002\u70ba\u4e86\u78ba\u4fdd Redis \u7684\u7a69\u5b9a\u904b\u884c\uff0c\u958b\u767c\u8005\u5011\u5f15\u5165\u4e86\u770b\u9580\u72d7\uff08Watchdog\uff09\u6a5f\u5236\u3002\u672c\u6587\u5c07\u6df1\u5165\u5206\u6790 Redis \u770b\u9580\u72d7\u7684\u6e90\u78bc\uff0c\u4e26\u63a2\u8a0e\u5176\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/p>\n

\u4ec0\u9ebc\u662f Redis \u770b\u9580\u72d7\uff1f<\/h2>\n

Redis \u770b\u9580\u72d7\u662f\u4e00\u7a2e\u76e3\u63a7\u6a5f\u5236\uff0c\u65e8\u5728\u6aa2\u6e2c Redis \u670d\u52d9\u7684\u5065\u5eb7\u72c0\u614b\u3002\u7576 Redis \u9032\u7a0b\u51fa\u73fe\u7570\u5e38\u6216\u7121\u6cd5\u97ff\u61c9\u6642\uff0c\u770b\u9580\u72d7\u6703\u81ea\u52d5\u91cd\u555f\u9032\u7a0b\uff0c\u5f9e\u800c\u6e1b\u5c11\u7cfb\u7d71\u7684\u505c\u6a5f\u6642\u9593\u3002\u9019\u4e00\u6a5f\u5236\u7279\u5225\u9069\u5408\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u7684\u61c9\u7528\u5834\u666f\u3002<\/p>\n

Redis \u770b\u9580\u72d7\u7684\u6e90\u78bc\u5206\u6790<\/h2>\n

Redis \u7684\u770b\u9580\u72d7\u529f\u80fd\u4e3b\u8981\u5be6\u73fe\u5728\u6e90\u78bc\u4e2d\u7684 server.c<\/code> \u6587\u4ef6\u4e2d\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u95dc\u9375\u7684\u4ee3\u78bc\u7247\u6bb5\u548c\u5176\u529f\u80fd\u89e3\u6790\uff1a<\/p>\n

\u555f\u52d5\u770b\u9580\u72d7<\/h3>\n
if (server.watchdog_enabled) {\n    server.watchdog_pid = fork();\n    if (server.watchdog_pid == 0) {\n        watchdog_main();\n    }\n}<\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u7576\u770b\u9580\u72d7\u529f\u80fd\u88ab\u555f\u7528\u6642\uff0cRedis \u6703\u5275\u5efa\u4e00\u500b\u65b0\u7684\u9032\u7a0b\u4f86\u904b\u884c\u770b\u9580\u72d7\u7684\u4e3b\u51fd\u6578 watchdog_main()<\/code>\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u770b\u9580\u72d7\u7684\u904b\u884c\u4e0d\u6703\u5f71\u97ff\u5230\u4e3b Redis \u9032\u7a0b\u3002<\/p>\n
\u76e3\u63a7\u5065\u5eb7\u72c0\u614b<\/h3>\n
void watchdog_main(void) {\n    while (1) {\n        sleep(WATCHDOG_INTERVAL);\n        if (!is_redis_healthy()) {\n            restart_redis();\n        }\n    }\n}<\/code><\/pre>\n
\u5728 watchdog_main()<\/code> \u51fd\u6578\u4e2d\uff0c\u770b\u9580\u72d7\u6703\u5b9a\u671f\u6aa2\u67e5 Redis \u7684\u5065\u5eb7\u72c0\u614b\u3002\u5982\u679c\u767c\u73fe Redis \u9032\u7a0b\u7121\u6cd5\u6b63\u5e38\u5de5\u4f5c\uff0c\u5247\u6703\u8abf\u7528 restart_redis()<\/code> \u51fd\u6578\u4f86\u91cd\u555f Redis\u3002<\/p>\n
\u5065\u5eb7\u6aa2\u67e5<\/h3>\n
int is_redis_healthy(void) {\n    \/\/ \u6aa2\u67e5 Redis \u662f\u5426\u97ff\u61c9\n    return (server.state == REDIS_RUNNING);\n}<\/code><\/pre>\n
\u5065\u5eb7\u6aa2\u67e5\u7684\u908f\u8f2f\u76f8\u5c0d\u7c21\u55ae\uff0c\u4e3b\u8981\u662f\u901a\u904e\u6aa2\u67e5 Redis \u7684\u72c0\u614b\u4f86\u5224\u65b7\u5176\u662f\u5426\u6b63\u5e38\u904b\u884c\u3002\u9019\u7a2e\u7c21\u55ae\u7684\u6aa2\u67e5\u65b9\u5f0f\u96d6\u7136\u6709\u6548\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u53ef\u80fd\u7121\u6cd5\u6355\u6349\u5230\u6240\u6709\u7684\u7570\u5e38\u60c5\u6cc1\u3002<\/p>\n
\u5be6\u8e10\u4e2d\u7684\u61c9\u7528<\/h2>\n
\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0cRedis \u770b\u9580\u72d7\u7684\u914d\u7f6e\u548c\u4f7f\u7528\u975e\u5e38\u7c21\u55ae\u3002\u7528\u6236\u53ea\u9700\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u555f\u7528\u770b\u9580\u72d7\u529f\u80fd\uff0c\u4e26\u8a2d\u7f6e\u76f8\u61c9\u7684\u53c3\u6578\u5373\u53ef\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u914d\u7f6e\u793a\u4f8b\uff1a<\/p>\n
watchdog-enabled yes\nwatchdog-interval 5<\/code><\/pre>\n
\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u770b\u9580\u72d7\u529f\u80fd\u88ab\u555f\u7528\uff0c\u4e26\u4e14\u8a2d\u7f6e\u4e86\u6bcf 5 \u79d2\u9032\u884c\u4e00\u6b21\u5065\u5eb7\u6aa2\u67e5\u3002\u9019\u6a23\u7684\u914d\u7f6e\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8 Redis \u7684\u53ef\u7528\u6027\uff0c\u7279\u5225\u662f\u5728\u9ad8\u8ca0\u8f09\u7684\u74b0\u5883\u4e2d\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
Redis \u770b\u9580\u72d7\u662f\u4e00\u500b\u91cd\u8981\u7684\u76e3\u63a7\u6a5f\u5236\uff0c\u80fd\u5920\u6709\u6548\u5730\u63d0\u9ad8 Redis \u7684\u7a69\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002\u901a\u904e\u5c0d\u6e90\u78bc\u7684\u5206\u6790\uff0c\u6211\u5011\u53ef\u4ee5\u770b\u5230\u770b\u9580\u72d7\u7684\u5de5\u4f5c\u539f\u7406\u548c\u5be6\u73fe\u65b9\u5f0f\u3002\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u5408\u7406\u914d\u7f6e\u770b\u9580\u72d7\u529f\u80fd\u53ef\u4ee5\u986f\u8457\u964d\u4f4e\u7cfb\u7d71\u7684\u505c\u6a5f\u6642\u9593\uff0c\u78ba\u4fdd\u696d\u52d9\u7684\u9023\u7e8c\u6027\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u80fd\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u7121\u8ad6\u662f \u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 \u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6df1\u5165\u5206\u6790 Redis \u770b\u9580\u72d7\u7684\u6e90\u78bc\uff0c\u63a2\u8a0e\u5176\u5be6\u8e10\u61c9\u7528\uff0c\u63ed\u793a\u6027\u80fd\u512a\u5316\u8207\u6545\u969c\u6062\u5fa9\u7684\u95dc\u9375\u6280\u8853\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-156690","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156690","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=156690"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156690\/revisions"}],"predecessor-version":[{"id":156691,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156690\/revisions\/156691"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=156690"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=156690"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=156690"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}