{"id":97218,"date":"2024-10-20T15:59:16","date_gmt":"2024-10-20T07:59:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/97218\/"},"modified":"2024-10-20T15:59:17","modified_gmt":"2024-10-20T07:59:17","slug":"redis-get%e6%93%8d%e4%bd%9c%e5%af%a6%e7%94%a8%e6%8a%80%e5%b7%a7%ef%bc%88redis%e7%9a%84get%e7%9a%84%e7%94%a8%e6%b3%95%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/97218\/","title":{"rendered":"Redis Get\u64cd\u4f5c\u5be6\u7528\u6280\u5de7\uff08redis\u7684get\u7684\u7528\u6cd5\uff09"},"content":{"rendered":"<h1 id=\"redis-get%e6%93%8d%e4%bd%9c%e5%af%a6%e7%94%a8%e6%8a%80%e5%b7%a7%ef%bc%88redis%e7%9a%84get%e7%9a%84%e7%94%a8%e6%b3%95%ef%bc%89-oQnTYrjCbu\">Redis Get\u64cd\u4f5c\u5be6\u7528\u6280\u5de7\uff08redis\u7684get\u7684\u7528\u6cd5\uff09<\/h1>\n<p>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\u7279\u5225\u662f\u5728\u9700\u8981\u5feb\u901f\u8b80\u53d6\u6578\u64da\u7684\u61c9\u7528\u4e2d\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u7684Get\u64cd\u4f5c\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u6280\u5de7\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u5229\u7528\u9019\u4e00\u529f\u80fd\u3002<\/p>\n<h2 id=\"redis-get%e6%93%8d%e4%bd%9c%e6%a6%82%e8%bf%b0-oQnTYrjCbu\">Redis Get\u64cd\u4f5c\u6982\u8ff0<\/h2>\n<p>\u5728Redis\u4e2d\uff0cGet\u64cd\u4f5c\u7528\u65bc\u5f9e\u6578\u64da\u5eab\u4e2d\u7372\u53d6\u6307\u5b9a\u9375\u7684\u503c\u3002\u5176\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>GET key<\/code><\/pre>\n<p>\u5982\u679c\u6307\u5b9a\u7684\u9375\u5b58\u5728\uff0cRedis\u5c07\u8fd4\u56de\u5c0d\u61c9\u7684\u503c\uff1b\u5982\u679c\u9375\u4e0d\u5b58\u5728\uff0c\u5247\u8fd4\u56denil\u3002\u9019\u4e00\u64cd\u4f5c\u7684\u6642\u9593\u8907\u96dc\u5ea6\u70baO(1)\uff0c\u610f\u5473\u8457\u7121\u8ad6\u6578\u64da\u91cf\u591a\u5927\uff0c\u7372\u53d6\u6578\u64da\u7684\u901f\u5ea6\u90fd\u662f\u6046\u5b9a\u7684\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e7%94%a8%e6%b3%95%e7%a4%ba%e4%be%8b-oQnTYrjCbu\">\u57fa\u672c\u7528\u6cd5\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528Redis\u7684Get\u64cd\u4f5c\uff1a<\/p>\n<pre><code>SET mykey \"Hello, Redis!\"\nGET mykey<\/code><\/pre>\n<p>\u57f7\u884c\u4e0a\u8ff0\u4ee3\u78bc\u5f8c\uff0c\u5c07\u8fd4\u56de\u5b57\u7b26\u4e32\u201cHello, Redis!\u201d\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8get%e6%93%8d%e4%bd%9c%e7%9a%84%e5%af%a6%e7%94%a8%e6%8a%80%e5%b7%a7-oQnTYrjCbu\">\u4f7f\u7528Get\u64cd\u4f5c\u7684\u5be6\u7528\u6280\u5de7<\/h2>\n<h3 id=\"1-%e9%8d%b5%e7%9a%84%e5%ad%98%e5%9c%a8%e6%80%a7%e6%aa%a2%e6%9f%a5-oQnTYrjCbu\">1. \u9375\u7684\u5b58\u5728\u6027\u6aa2\u67e5<\/h3>\n<p>\u5728\u4f7f\u7528Get\u64cd\u4f5c\u4e4b\u524d\uff0c\u6aa2\u67e5\u9375\u662f\u5426\u5b58\u5728\u662f\u500b\u597d\u7fd2\u6163\u3002\u53ef\u4ee5\u4f7f\u7528EXISTS\u547d\u4ee4\u4f86\u78ba\u8a8d\u9375\u7684\u5b58\u5728\u6027\uff1a<\/p>\n<pre><code>EXISTS mykey<\/code><\/pre>\n<p>\u5982\u679c\u8fd4\u56de1\uff0c\u5247\u8868\u793a\u9375\u5b58\u5728\uff1b\u5982\u679c\u8fd4\u56de0\uff0c\u5247\u8868\u793a\u9375\u4e0d\u5b58\u5728\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684Get\u64cd\u4f5c\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e9%bb%98%e8%aa%8d%e5%80%bc-oQnTYrjCbu\">2. \u4f7f\u7528\u9ed8\u8a8d\u503c<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u60a8\u53ef\u80fd\u5e0c\u671b\u5728\u9375\u4e0d\u5b58\u5728\u6642\u8fd4\u56de\u4e00\u500b\u9ed8\u8a8d\u503c\u3002\u53ef\u4ee5\u901a\u904e\u7de8\u5beb\u7c21\u55ae\u7684\u908f\u8f2f\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>\nvalue = GET mykey\nif value is nil:\n    value = \"default_value\"\n<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e7%ae%a1%e9%81%93%e6%8a%80%e8%a1%93-oQnTYrjCbu\">3. \u4f7f\u7528\u7ba1\u9053\u6280\u8853<\/h3>\n<p>\u7576\u9700\u8981\u4e00\u6b21\u6027\u7372\u53d6\u591a\u500b\u9375\u7684\u503c\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u7ba1\u9053\u6280\u8853\u4f86\u63d0\u9ad8\u6548\u7387\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u7db2\u7d61\u5ef6\u9072\uff0c\u63d0\u5347\u6027\u80fd\uff1a<\/p>\n<pre><code>\npipeline = redis_client.pipeline()\npipeline.GET('key1')\npipeline.GET('key2')\nvalues = pipeline.execute()\n<\/code><\/pre>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93-oQnTYrjCbu\">4. \u4f7f\u7528\u904e\u671f\u6642\u9593<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u60a8\u53ef\u80fd\u5e0c\u671b\u8a2d\u7f6e\u9375\u7684\u904e\u671f\u6642\u9593\uff0c\u4ee5\u4fbf\u81ea\u52d5\u6e05\u9664\u4e0d\u518d\u9700\u8981\u7684\u6578\u64da\u3002\u53ef\u4ee5\u4f7f\u7528SETEX\u547d\u4ee4\u4f86\u8a2d\u7f6e\u9375\u7684\u503c\u53ca\u5176\u904e\u671f\u6642\u9593\uff1a<\/p>\n<pre><code>SETEX mykey 3600 \"Hello, Redis!\"<\/code><\/pre>\n<p>\u4e0a\u8ff0\u4ee3\u78bc\u5c07\u57283600\u79d2\u5f8c\u81ea\u52d5\u522a\u9664mykey\u3002<\/p>\n<h3 id=\"5-%e9%8d%b5%e7%9a%84%e5%91%bd%e5%90%8d%e8%a6%8f%e7%af%84-oQnTYrjCbu\">5. \u9375\u7684\u547d\u540d\u898f\u7bc4<\/h3>\n<p>\u70ba\u4e86\u63d0\u9ad8\u53ef\u8b80\u6027\u548c\u7dad\u8b77\u6027\uff0c\u5efa\u8b70\u9075\u5faa\u4e00\u5b9a\u7684\u547d\u540d\u898f\u7bc4\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u5192\u865f\u5206\u9694\u7b26\u4f86\u7d44\u7e54\u9375\uff1a<\/p>\n<pre><code>user:1000:name\nuser:1000:email<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u547d\u540d\u65b9\u5f0f\u53ef\u4ee5\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7ba1\u7406\u548c\u67e5\u627e\u6578\u64da\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-oQnTYrjCbu\">\u7e3d\u7d50<\/h2>\n<p>Redis\u7684Get\u64cd\u4f5c\u662f\u4e00\u500b\u5f37\u5927\u4e14\u9ad8\u6548\u7684\u529f\u80fd\uff0c\u9069\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u5834\u666f\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528\u9375\u7684\u5b58\u5728\u6027\u6aa2\u67e5\u3001\u9ed8\u8a8d\u503c\u3001\u7ba1\u9053\u6280\u8853\u3001\u904e\u671f\u6642\u9593\u4ee5\u53ca\u547d\u540d\u898f\u7bc4\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u7ba1\u7406\u548c\u7372\u53d6\u6578\u64da\u3002\u82e5\u60a8\u9700\u8981\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u904b\u884c\u60a8\u7684Redis\u670d\u52d9\uff0c\u4eab\u53d7\u66f4\u5feb\u7684\u6578\u64da\u8a2a\u554f\u901f\u5ea6\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis Get\u64cd\u4f5c\u7684\u5be6\u7528\u6280\u5de7\uff0c\u4e86\u89e3\u5982\u4f55\u9ad8\u6548\u4f7f\u7528Redis\u7684get\u547d\u4ee4\u4f86\u512a\u5316\u6578\u64da\u5b58\u53d6\u548c\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-97218","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97218","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=97218"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97218\/revisions"}],"predecessor-version":[{"id":97219,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97218\/revisions\/97219"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=97218"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=97218"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=97218"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}