{"id":179324,"date":"2024-11-09T00:52:20","date_gmt":"2024-11-08T16:52:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179324\/"},"modified":"2024-11-09T00:52:21","modified_gmt":"2024-11-08T16:52:21","slug":"%e5%a6%82%e4%bd%95%e7%94%a8-redis-%e6%aa%a2%e6%9f%a5%e9%8d%b5%e6%98%af%e5%90%a6%e5%ad%98%e5%9c%a8%ef%bc%88redis-%e6%9f%a5%e7%9c%8b%e9%8d%b5%e6%98%af%e5%90%a6%e5%ad%98%e5%9c%a8%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179324\/","title":{"rendered":"\u5982\u4f55\u7528 Redis \u6aa2\u67e5\u9375\u662f\u5426\u5b58\u5728\uff08redis \u67e5\u770b\u9375\u662f\u5426\u5b58\u5728\uff09"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e7%94%a8-redis-%e6%aa%a2%e6%9f%a5%e9%8d%b5%e6%98%af%e5%90%a6%e5%ad%98%e5%9c%a8%ef%bc%88redis-%e6%9f%a5%e7%9c%8b%e9%8d%b5%e6%98%af%e5%90%a6%e5%ad%98%e5%9c%a8%ef%bc%89-LQhzATlHRU\">\u5982\u4f55\u7528 Redis \u6aa2\u67e5\u9375\u662f\u5426\u5b58\u5728\uff08redis \u67e5\u770b\u9375\u662f\u5426\u5b58\u5728\uff09<\/h1>\n<p>Redis \u662f\u4e00\u500b\u9ad8\u6548\u80fd\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u6578\u64da\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u5be6\u6642\u6578\u64da\u8655\u7406\u7b49\u5834\u666f\u3002\u5728\u4f7f\u7528 Redis \u6642\uff0c\u6aa2\u67e5\u67d0\u500b\u9375\u662f\u5426\u5b58\u5728\u662f\u975e\u5e38\u5e38\u898b\u7684\u9700\u6c42\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528 Redis \u63d0\u4f9b\u7684\u547d\u4ee4\u4f86\u6aa2\u67e5\u9375\u7684\u5b58\u5728\u6027\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u7bc4\u4f8b\u548c\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"redis-%e4%b8%ad%e7%9a%84%e9%8d%b5%e5%ad%98%e5%9c%a8%e6%80%a7%e6%aa%a2%e6%9f%a5-LQhzATlHRU\">Redis \u4e2d\u7684\u9375\u5b58\u5728\u6027\u6aa2\u67e5<\/h2>\n<p>\u5728 Redis \u4e2d\uff0c\u6aa2\u67e5\u9375\u662f\u5426\u5b58\u5728\u4e3b\u8981\u4f7f\u7528 <code>EXISTS<\/code> \u547d\u4ee4\u3002\u9019\u500b\u547d\u4ee4\u53ef\u4ee5\u63a5\u53d7\u4e00\u500b\u6216\u591a\u500b\u9375\u4f5c\u70ba\u53c3\u6578\uff0c\u4e26\u8fd4\u56de\u9019\u4e9b\u9375\u7684\u5b58\u5728\u72c0\u614b\u3002<\/p>\n<h3 id=\"exists-%e5%91%bd%e4%bb%a4%e7%9a%84%e8%aa%9e%e6%b3%95-LQhzATlHRU\">EXISTS \u547d\u4ee4\u7684\u8a9e\u6cd5<\/h3>\n<pre><code>EXISTS key [key ...]<\/code><\/pre>\n<p>\u9019\u88e1\u7684 <code>key<\/code> \u662f\u4f60\u60f3\u8981\u6aa2\u67e5\u7684\u9375\u540d\u3002\u7576\u4f60\u50b3\u5165\u4e00\u500b\u6216\u591a\u500b\u9375\u6642\uff0cRedis \u5c07\u8fd4\u56de\u4e00\u500b\u6574\u6578\uff0c\u8868\u793a\u5b58\u5728\u7684\u9375\u7684\u6578\u91cf\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-LQhzATlHRU\">\u4f7f\u7528\u7bc4\u4f8b<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f7f\u7528 <code>EXISTS<\/code> \u547d\u4ee4\u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>127.0.0.1:6379&gt; SET mykey \"Hello\"\nOK\n127.0.0.1:6379&gt; EXISTS mykey\n(integer) 1\n127.0.0.1:6379&gt; EXISTS non_existing_key\n(integer) 0\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u4f7f\u7528 <code>SET<\/code> \u547d\u4ee4\u5275\u5efa\u4e86\u4e00\u500b\u9375 <code>mykey<\/code>\uff0c\u7136\u5f8c\u4f7f\u7528 <code>EXISTS<\/code> \u547d\u4ee4\u6aa2\u67e5\u8a72\u9375\u662f\u5426\u5b58\u5728\u3002\u7d50\u679c\u986f\u793a <code>mykey<\/code> \u5b58\u5728\uff0c\u8fd4\u56de\u503c\u70ba 1\u3002\u800c\u5c0d\u65bc\u4e0d\u5b58\u5728\u7684\u9375 <code>non_existing_key<\/code>\uff0c\u8fd4\u56de\u503c\u70ba 0\u3002<\/p>\n<h2 id=\"%e5%a4%9a%e9%8d%b5%e6%aa%a2%e6%9f%a5-LQhzATlHRU\">\u591a\u9375\u6aa2\u67e5<\/h2>\n<p>\u4f60\u4e5f\u53ef\u4ee5\u4e00\u6b21\u6aa2\u67e5\u591a\u500b\u9375\u7684\u5b58\u5728\u6027\u3002\u4ee5\u4e0b\u662f\u591a\u9375\u6aa2\u67e5\u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>127.0.0.1:6379&gt; SET key1 \"Value1\"\nOK\n127.0.0.1:6379&gt; SET key2 \"Value2\"\nOK\n127.0.0.1:6379&gt; EXISTS key1 key2 non_existing_key\n(integer) 2\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u540c\u6642\u6aa2\u67e5\u4e86 <code>key1<\/code>\u3001<code>key2<\/code> \u548c <code>non_existing_key<\/code>\u3002\u7d50\u679c\u986f\u793a\u5b58\u5728\u7684\u9375\u6578\u91cf\u70ba 2\uff0c\u56e0\u70ba\u53ea\u6709 <code>key1<\/code> \u548c <code>key2<\/code> \u5b58\u5728\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-LQhzATlHRU\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u6027\u80fd\u8003\u91cf\uff1a<\/strong>\u96d6\u7136 <code>EXISTS<\/code> \u547d\u4ee4\u975e\u5e38\u9ad8\u6548\uff0c\u4f46\u5728\u6aa2\u67e5\u5927\u91cf\u9375\u7684\u5b58\u5728\u6027\u6642\uff0c\u4ecd\u7136\u9700\u8981\u8003\u616e\u6027\u80fd\u5f71\u97ff\u3002<\/li>\n<li><strong>\u9375\u7684\u985e\u578b\uff1a<\/strong> <code>EXISTS<\/code> \u547d\u4ee4\u53ef\u4ee5\u6aa2\u67e5\u4efb\u4f55\u985e\u578b\u7684\u9375\uff0c\u5305\u62ec\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\u3002<\/li>\n<li><strong>\u7248\u672c\u517c\u5bb9\u6027\uff1a<\/strong> \u5728 Redis 2.8 \u4e4b\u524d\uff0c<code>EXISTS<\/code> \u547d\u4ee4\u7684\u884c\u70ba\u662f\u8fd4\u56de 1 \u6216 0\uff0c\u8868\u793a\u9375\u662f\u5426\u5b58\u5728\uff1b\u5f9e 2.8 \u958b\u59cb\uff0c\u652f\u6301\u591a\u9375\u6aa2\u67e5\uff0c\u8fd4\u56de\u5b58\u5728\u7684\u9375\u7684\u6578\u91cf\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-LQhzATlHRU\">\u7e3d\u7d50<\/h2>\n<p>\u5728 Redis \u4e2d\uff0c\u4f7f\u7528 <code>EXISTS<\/code> \u547d\u4ee4\u6aa2\u67e5\u9375\u7684\u5b58\u5728\u6027\u662f\u4e00\u500b\u7c21\u55ae\u800c\u6709\u6548\u7684\u65b9\u6cd5\u3002\u7121\u8ad6\u662f\u55ae\u9375\u9084\u662f\u591a\u9375\u6aa2\u67e5\uff0c\u9019\u500b\u547d\u4ee4\u90fd\u80fd\u5feb\u901f\u8fd4\u56de\u7d50\u679c\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u9032\u884c\u6578\u64da\u7ba1\u7406\u548c\u908f\u8f2f\u5224\u65b7\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u5b58\u53d6\u7684\u61c9\u7528\u5834\u666f\uff0cRedis \u63d0\u4f9b\u7684\u9019\u4e9b\u529f\u80fd\u7121\u7591\u662f\u975e\u5e38\u6709\u50f9\u503c\u7684\u3002<\/p>\n<p>\u5982\u679c\u4f60\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u4f60\u7684 Redis \u5be6\u4f8b\uff0cServer.HK \u63d0\u4f9b\u7684\u670d\u52d9\u5c07\u662f\u4f60\u7684\u7406\u60f3\u9078\u64c7\u3002\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u80fd\u5920\u6eff\u8db3\u5404\u7a2e\u9700\u6c42\uff0c\u7121\u8ad6\u662f\u6578\u64da\u5b58\u5132\u9084\u662f\u61c9\u7528\u90e8\u7f72\uff0c\u5747\u80fd\u63d0\u4f9b\u7a69\u5b9a\u7684\u6027\u80fd\u548c\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4f7f\u7528 Redis \u547d\u4ee4\u6aa2\u67e5\u9375\u662f\u5426\u5b58\u5728\uff0c\u7c21\u55ae\u6b65\u9a5f\u6559\u4f60\u5feb\u901f\u78ba\u8a8d\u8cc7\u6599\u7684\u5b58\u5728\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-179324","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179324","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=179324"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179324\/revisions"}],"predecessor-version":[{"id":179325,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179324\/revisions\/179325"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179324"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179324"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179324"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}