{"id":128331,"date":"2024-10-26T13:22:17","date_gmt":"2024-10-26T05:22:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/128331\/"},"modified":"2024-10-26T13:22:17","modified_gmt":"2024-10-26T05:22:17","slug":"redis-%e5%af%a6%e7%8f%be%e7%9a%84%e8%ae%80%e5%af%ab%e9%8e%96%e4%b8%80%e7%a8%ae%e6%96%b0%e7%9a%84%e5%90%8c%e6%ad%a5%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/128331\/","title":{"rendered":"Redis \u5be6\u73fe\u7684\u8b80\u5beb\u9396\u4e00\u7a2e\u65b0\u7684\u540c\u6b65\u89e3\u6c7a\u65b9\u6848"},"content":{"rendered":"<h1 id=\"redis-%e5%af%a6%e7%8f%be%e7%9a%84%e8%ae%80%e5%af%ab%e9%8e%96%ef%bc%9a%e4%b8%80%e7%a8%ae%e6%96%b0%e7%9a%84%e5%90%8c%e6%ad%a5%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-wTsrLWYsfH\">Redis \u5be6\u73fe\u7684\u8b80\u5beb\u9396\uff1a\u4e00\u7a2e\u65b0\u7684\u540c\u6b65\u89e3\u6c7a\u65b9\u6848<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u4e00\u81f4\u6027\u548c\u4e26\u767c\u63a7\u5236\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u96a8\u8457\u61c9\u7528\u7a0b\u5e8f\u7684\u8907\u96dc\u6027\u589e\u52a0\uff0c\u50b3\u7d71\u7684\u9396\u6a5f\u5236\u5f80\u5f80\u7121\u6cd5\u6eff\u8db3\u6027\u80fd\u548c\u53ef\u64f4\u5c55\u6027\u7684\u9700\u6c42\u3002Redis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u4e00\u7a2e\u65b0\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u5be6\u73fe\u8b80\u5beb\u9396\uff0c\u9019\u5c0d\u65bc\u9700\u8981\u9ad8\u4e26\u767c\u8a2a\u554f\u7684\u61c9\u7528\u7a0b\u5e8f\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e8%ae%80%e5%af%ab%e9%8e%96%ef%bc%9f-wTsrLWYsfH\">\u4ec0\u9ebc\u662f\u8b80\u5beb\u9396\uff1f<\/h2>\n<p>\u8b80\u5beb\u9396\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u9396\u6a5f\u5236\uff0c\u5141\u8a31\u591a\u500b\u8b80\u64cd\u4f5c\u540c\u6642\u9032\u884c\uff0c\u4f46\u5728\u5beb\u64cd\u4f5c\u6642\u6703\u963b\u6b62\u5176\u4ed6\u8b80\u6216\u5beb\u64cd\u4f5c\u3002\u9019\u7a2e\u6a5f\u5236\u80fd\u5920\u63d0\u9ad8\u7cfb\u7d71\u7684\u4e26\u767c\u6027\uff0c\u7279\u5225\u662f\u5728\u8b80\u64cd\u4f5c\u9060\u591a\u65bc\u5beb\u64cd\u4f5c\u7684\u60c5\u6cc1\u4e0b\u3002<\/p>\n<h2 id=\"redis-%e7%9a%84%e5%84%aa%e5%8b%a2-wTsrLWYsfH\">Redis \u7684\u512a\u52e2<\/h2>\n<p>Redis \u662f\u4e00\u500b\u57fa\u65bc\u5167\u5b58\u7684\u6578\u64da\u7d50\u69cb\u5b58\u5132\u7cfb\u7d71\uff0c\u5177\u6709\u4ee5\u4e0b\u5e7e\u500b\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u6027\u80fd\uff1a<\/strong>Redis \u63d0\u4f9b\u6975\u5feb\u7684\u6578\u64da\u8b80\u53d6\u548c\u5beb\u5165\u901f\u5ea6\uff0c\u9069\u5408\u9ad8\u4e26\u767c\u5834\u666f\u3002<\/li>\n<li><strong>\u7c21\u55ae\u6613\u7528\uff1a<\/strong>Redis \u7684 API \u7c21\u55ae\uff0c\u6613\u65bc\u96c6\u6210\u5230\u5404\u7a2e\u61c9\u7528\u4e2d\u3002<\/li>\n<li><strong>\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff1a<\/strong>Redis \u652f\u6301\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u9748\u6d3b\u6027\u9ad8\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%9c%a8-redis-%e4%b8%ad%e5%af%a6%e7%8f%be%e8%ae%80%e5%af%ab%e9%8e%96-wTsrLWYsfH\">\u5982\u4f55\u5728 Redis \u4e2d\u5be6\u73fe\u8b80\u5beb\u9396<\/h2>\n<p>\u5728 Redis \u4e2d\u5be6\u73fe\u8b80\u5beb\u9396\u7684\u57fa\u672c\u601d\u8def\u662f\u4f7f\u7528 Redis \u7684\u539f\u5b50\u64cd\u4f5c\u4f86\u7ba1\u7406\u9396\u7684\u72c0\u614b\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u5be6\u73fe\u793a\u4f8b\uff1a<\/p>\n<pre><code>const redis = require('redis');\nconst client = redis.createClient();\n\nconst LOCK_KEY = 'lock_key';\nconst READ_LOCK = 'read_lock';\nconst WRITE_LOCK = 'write_lock';\n\nasync function acquireReadLock() {\n    const lock = await client.incr(READ_LOCK);\n    if (lock === 1) {\n        \/\/ \u7372\u53d6\u8b80\u9396\u6210\u529f\n        return true;\n    }\n    return false;\n}\n\nasync function releaseReadLock() {\n    await client.decr(READ_LOCK);\n}\n\nasync function acquireWriteLock() {\n    const readLockCount = await client.get(READ_LOCK);\n    if (readLockCount === '0') {\n        await client.set(WRITE_LOCK, '1');\n        return true;\n    }\n    return false;\n}\n\nasync function releaseWriteLock() {\n    await client.del(WRITE_LOCK);\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 Redis \u7684 <code>INCR<\/code> \u548c <code>DECR<\/code> \u547d\u4ee4\u4f86\u7ba1\u7406\u8b80\u9396\u7684\u8a08\u6578\uff0c\u4e26\u4f7f\u7528 <code>SET<\/code> \u548c <code>DEL<\/code> \u547d\u4ee4\u4f86\u7ba1\u7406\u5beb\u9396\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u78ba\u4fdd\u4e86\u5728\u5beb\u64cd\u4f5c\u6642\u4e0d\u6703\u6709\u8b80\u64cd\u4f5c\u9032\u884c\uff0c\u5f9e\u800c\u4fdd\u8b49\u4e86\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e5%a0%b4%e6%99%af-wTsrLWYsfH\">\u4f7f\u7528\u5834\u666f<\/h2>\n<p>Redis \u5be6\u73fe\u7684\u8b80\u5beb\u9396\u7279\u5225\u9069\u5408\u4ee5\u4e0b\u5834\u666f\uff1a<\/p>\n<ul>\n<li>\u9ad8\u4e26\u767c\u7684\u6578\u64da\u67e5\u8a62\u7cfb\u7d71\uff0c\u4f8b\u5982\u793e\u4ea4\u5a92\u9ad4\u5e73\u53f0\u7684\u7528\u6236\u8cc7\u6599\u67e5\u8a62\u3002<\/li>\n<li>\u9700\u8981\u983b\u7e41\u8b80\u53d6\u4f46\u5076\u723e\u5beb\u5165\u7684\u61c9\u7528\uff0c\u4f8b\u5982\u5546\u54c1\u5eab\u5b58\u7ba1\u7406\u7cfb\u7d71\u3002<\/li>\n<li>\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u7684\u6578\u64da\u5171\u4eab\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-wTsrLWYsfH\">\u7e3d\u7d50<\/h2>\n<p>Redis \u5be6\u73fe\u7684\u8b80\u5beb\u9396\u63d0\u4f9b\u4e86\u4e00\u7a2e\u9ad8\u6548\u7684\u540c\u6b65\u89e3\u6c7a\u65b9\u6848\uff0c\u80fd\u5920\u5728\u9ad8\u4e26\u767c\u74b0\u5883\u4e2d\u6709\u6548\u7ba1\u7406\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u901a\u904e\u5229\u7528 Redis \u7684\u539f\u5b50\u64cd\u4f5c\uff0c\u6211\u5011\u53ef\u4ee5\u7c21\u55ae\u5730\u5be6\u73fe\u8b80\u5beb\u9396\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u6027\u80fd\u548c\u53ef\u64f4\u5c55\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u5c07\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u60a8\u7684\u61c9\u7528\u5728\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u4e0a\u90fd\u80fd\u9054\u5230\u6700\u4f73\u6548\u679c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Redis \u5be6\u73fe\u7684\u8b80\u5beb\u9396\u63d0\u4f9b\u9ad8\u6548\u7684\u540c\u6b65\u89e3\u6c7a\u65b9\u6848\uff0c\u63d0\u5347\u591a\u7dda\u7a0b\u74b0\u5883\u4e0b\u7684\u6578\u64da\u4e00\u81f4\u6027\u8207\u6027\u80fd\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-128331","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128331","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=128331"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128331\/revisions"}],"predecessor-version":[{"id":128332,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128331\/revisions\/128332"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=128331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=128331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=128331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}