{"id":170935,"date":"2024-11-06T23:04:18","date_gmt":"2024-11-06T15:04:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/170935\/"},"modified":"2024-11-06T23:04:19","modified_gmt":"2024-11-06T15:04:19","slug":"%e7%a0%b4%e8%a7%a3redis%e7%9a%84%e6%a8%a1%e7%b3%8a%e6%9f%a5%e7%9c%8bkey%e4%b9%8b%e8%b7%af%ef%bc%88redis%e6%a8%a1%e7%b3%8a%e6%9f%a5%e7%9c%8bkey%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/170935\/","title":{"rendered":"\u7834\u89e3Redis\u7684\u6a21\u7cca\u67e5\u770bKey\u4e4b\u8def\uff08redis\u6a21\u7cca\u67e5\u770bkey\uff09"},"content":{"rendered":"<h1 id=\"%e7%a0%b4%e8%a7%a3redis%e7%9a%84%e6%a8%a1%e7%b3%8a%e6%9f%a5%e7%9c%8bkey%e4%b9%8b%e8%b7%af%ef%bc%88redis%e6%a8%a1%e7%b3%8a%e6%9f%a5%e7%9c%8bkey%ef%bc%89-DfxmZkNkWz\">\u7834\u89e3Redis\u7684\u6a21\u7cca\u67e5\u770bKey\u4e4b\u8def\uff08redis\u6a21\u7cca\u67e5\u770bkey\uff09<\/h1>\n<p>Redis\u662f\u4e00\u79cd\u9ad8\u6027\u80fd\u7684\u952e\u503c\u5b58\u50a8\u6570\u636e\u5e93\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u7f13\u5b58\u3001\u6d88\u606f\u961f\u5217\u548c\u5b9e\u65f6\u6570\u636e\u5904\u7406\u7b49\u573a\u666f\u3002\u5c3d\u7ba1Redis\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u547d\u4ee4\u6765\u7ba1\u7406\u6570\u636e\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u7528\u6237\u53ef\u80fd\u9700\u8981\u6a21\u7cca\u67e5\u770b\u7279\u5b9a\u7684Key\u3002\u672c\u6587\u5c06\u63a2\u8ba8\u5982\u4f55\u5728Redis\u4e2d\u5b9e\u73b0\u6a21\u7cca\u67e5\u770bKey\u7684\u529f\u80fd\uff0c\u4ee5\u53ca\u76f8\u5173\u7684\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n<h2 id=\"redis%e4%b8%ad%e7%9a%84key%e7%ae%a1%e7%90%86-DfxmZkNkWz\">Redis\u4e2d\u7684Key\u7ba1\u7406<\/h2>\n<p>\u5728Redis\u4e2d\uff0cKey\u662f\u6570\u636e\u7684\u552f\u4e00\u6807\u8bc6\u7b26\u3002\u7528\u6237\u53ef\u4ee5\u901a\u8fc7\u547d\u4ee4\u5982 <code>SET<\/code> \u548c <code>GET<\/code> \u6765\u5b58\u50a8\u548c\u68c0\u7d22\u6570\u636e\u3002\u968f\u7740\u6570\u636e\u91cf\u7684\u589e\u52a0\uff0c\u7ba1\u7406\u8fd9\u4e9bKey\u53d8\u5f97\u6108\u52a0\u590d\u6742\u3002Redis\u63d0\u4f9b\u4e86 <code>KEYS<\/code> \u547d\u4ee4\u6765\u5217\u51fa\u6240\u6709\u7684Key\uff0c\u4f46\u8be5\u547d\u4ee4\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u5e76\u4e0d\u63a8\u8350\u4f7f\u7528\uff0c\u56e0\u4e3a\u5b83\u4f1a\u963b\u585e\u670d\u52a1\u5668\uff0c\u5f71\u54cd\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e6%a8%a1%e7%b3%8a%e6%9f%a5%e7%9c%8bkey%e7%9a%84%e9%9c%80%e6%b1%82-DfxmZkNkWz\">\u6a21\u7cca\u67e5\u770bKey\u7684\u9700\u6c42<\/h2>\n<p>\u6a21\u7cca\u67e5\u770bKey\u7684\u9700\u6c42\u901a\u5e38\u51fa\u73b0\u5728\u4ee5\u4e0b\u51e0\u79cd\u60c5\u51b5\uff1a<\/p>\n<ul>\n<li>\u9700\u8981\u67e5\u627e\u7279\u5b9a\u6a21\u5f0f\u7684Key\uff0c\u4f8b\u5982\u4ee5\u67d0\u4e2a\u524d\u7f00\u5f00\u5934\u7684Key\u3002<\/li>\n<li>\u5728\u8c03\u8bd5\u8fc7\u7a0b\u4e2d\uff0c\u60f3\u8981\u5feb\u901f\u67e5\u770b\u5f53\u524d\u5b58\u50a8\u7684Key\u3002<\/li>\n<li>\u9700\u8981\u5bf9Key\u8fdb\u884c\u5206\u7c7b\u548c\u7ba1\u7406\uff0c\u4ee5\u4fbf\u4e8e\u540e\u7eed\u7684\u6570\u636e\u5904\u7406\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8scan%e5%91%bd%e4%bb%a4%e8%bf%9b%e8%a1%8c%e6%a8%a1%e7%b3%8a%e6%9f%a5%e7%9c%8b-DfxmZkNkWz\">\u4f7f\u7528SCAN\u547d\u4ee4\u8fdb\u884c\u6a21\u7cca\u67e5\u770b<\/h2>\n<p>\u4e3a\u4e86\u907f\u514d <code>KEYS<\/code> \u547d\u4ee4\u5e26\u6765\u7684\u6027\u80fd\u95ee\u9898\uff0cRedis\u63d0\u4f9b\u4e86 <code>SCAN<\/code> \u547d\u4ee4\u3002\u8be5\u547d\u4ee4\u53ef\u4ee5\u9010\u6b65\u904d\u5386\u6570\u636e\u5e93\u4e2d\u7684Key\uff0c\u9002\u5408\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u4f7f\u7528\u3002<\/p>\n<h3 id=\"scan%e5%91%bd%e4%bb%a4%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%94%a8%e6%b3%95-DfxmZkNkWz\">SCAN\u547d\u4ee4\u7684\u57fa\u672c\u7528\u6cd5<\/h3>\n<pre><code>SCAN cursor [MATCH pattern] [COUNT count]<\/code><\/pre>\n<p>\u5176\u4e2d\uff0c<code>cursor<\/code> \u662f\u6e38\u6807\uff0c<code>MATCH<\/code> \u7528\u4e8e\u6307\u5b9a\u5339\u914d\u6a21\u5f0f\uff0c<code>COUNT<\/code> \u7528\u4e8e\u6307\u5b9a\u6bcf\u6b21\u8fd4\u56de\u7684Key\u6570\u91cf\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<pre><code>SCAN 0 MATCH user:* COUNT 10<\/code><\/pre>\n<p>\u4e0a\u8ff0\u547d\u4ee4\u5c06\u8fd4\u56de\u6240\u6709\u4ee5 <code>user:<\/code> \u5f00\u5934\u7684Key\uff0c\u6bcf\u6b21\u8fd4\u56de\u6700\u591a10\u4e2a\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c<code>SCAN<\/code> \u547d\u4ee4\u662f\u975e\u963b\u585e\u7684\uff0c\u56e0\u6b64\u53ef\u4ee5\u5728\u9ad8\u5e76\u53d1\u73af\u5883\u4e2d\u5b89\u5168\u4f7f\u7528\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a0%81-DfxmZkNkWz\">\u793a\u4f8b\u4ee3\u7801<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528Python\u548cRedis-py\u5e93\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528 <code>SCAN<\/code> \u547d\u4ee4\u6a21\u7cca\u67e5\u770bKey\uff1a<\/p>\n<pre><code>import redis\n\n# \u8fde\u63a5\u5230Redis\nr = redis.Redis(host='localhost', port=6379, db=0)\n\n# \u521d\u59cb\u5316\u6e38\u6807\ncursor = 0\n\n# \u5faa\u73af\u904d\u5386\u6240\u6709Key\nwhile True:\n    cursor, keys = r.scan(cursor, match='user:*', count=10)\n    for key in keys:\n        print(key)\n    if cursor == 0:\n        break<\/code><\/pre>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%ae%9e%e8%b7%b5-DfxmZkNkWz\">\u6700\u4f73\u5b9e\u8df5<\/h2>\n<p>\u5728\u4f7f\u7528\u6a21\u7cca\u67e5\u770bKey\u65f6\uff0c\u5efa\u8bae\u9075\u5faa\u4ee5\u4e0b\u6700\u4f73\u5b9e\u8df5\uff1a<\/p>\n<ul>\n<li>\u5c3d\u91cf\u4f7f\u7528 <code>SCAN<\/code> \u547d\u4ee4\u800c\u975e <code>KEYS<\/code> \u547d\u4ee4\uff0c\u4ee5\u907f\u514d\u6027\u80fd\u95ee\u9898\u3002<\/li>\n<li>\u5728\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u4f7f\u7528 <code>MATCH<\/code> \u53c2\u6570\u6765\u9650\u5236\u8fd4\u56de\u7684Key\u6570\u91cf\uff0c\u51cf\u5c11\u5185\u5b58\u6d88\u8017\u3002<\/li>\n<li>\u5b9a\u671f\u6e05\u7406\u4e0d\u518d\u4f7f\u7528\u7684Key\uff0c\u4ee5\u4fdd\u6301\u6570\u636e\u5e93\u7684\u6574\u6d01\u548c\u9ad8\u6548\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%80%bb%e7%bb%93-DfxmZkNkWz\">\u603b\u7ed3<\/h2>\n<p>\u6a21\u7cca\u67e5\u770bRedis\u4e2d\u7684Key\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u7ba1\u7406\u4efb\u52a1\uff0c\u5c24\u5176\u662f\u5728\u6570\u636e\u91cf\u5e9e\u5927\u7684\u60c5\u51b5\u4e0b\u3002\u901a\u8fc7\u4f7f\u7528 <code>SCAN<\/code> \u547d\u4ee4\uff0c\u7528\u6237\u53ef\u4ee5\u6709\u6548\u5730\u904d\u5386\u548c\u7ba1\u7406Key\uff0c\u800c\u4e0d\u4f1a\u5bf9\u6027\u80fd\u9020\u6210\u663e\u8457\u5f71\u54cd\u3002\u4e86\u89e3\u5982\u4f55\u9ad8\u6548\u5730\u4f7f\u7528Redis\u7684\u547d\u4ee4\uff0c\u5c06\u6709\u52a9\u4e8e\u63d0\u5347\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5bfb\u627e\u9ad8\u6027\u80fd\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u51b3\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u79cd\u9009\u62e9\uff0c\u6ee1\u8db3\u4e0d\u540c\u7528\u6237\u7684\u9700\u6c42\u3002\u65e0\u8bba\u662f <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a> \u8fd8\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u670d\u52a1\u5668<\/a>\uff0c\u6211\u4eec\u90fd\u80fd\u4e3a\u60a8\u63d0\u4f9b\u7a33\u5b9a\u53ef\u9760\u7684\u670d\u52a1\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u6a21\u7cca\u67e5\u770bKey\u7684\u6280\u5de7\u4e0e\u65b9\u6cd5\uff0c\u52a9\u4f60\u9ad8\u6548\u7ba1\u7406\u548c\u67e5\u8be2\u6570\u636e\uff0c\u63d0\u5347\u6570\u636e\u5e93\u64cd\u4f5c\u7684\u7075\u6d3b\u6027\u4e0e\u4fbf\u6377\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-170935","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/170935","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=170935"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/170935\/revisions"}],"predecessor-version":[{"id":170936,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/170935\/revisions\/170936"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=170935"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=170935"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=170935"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}