{"id":17439,"date":"2025-05-26T20:18:20","date_gmt":"2025-05-26T12:18:20","guid":{"rendered":"https:\/\/92it.top\/?p=17439"},"modified":"2025-05-26T20:18:20","modified_gmt":"2025-05-26T12:18:20","slug":"redis%e7%9a%84%e8%ae%a2%e9%98%85%e6%a8%a1%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=17439","title":{"rendered":"Redis\u7684\u8ba2\u9605\u6a21\u5f0f"},"content":{"rendered":"\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a Node.js \u76d1\u542c Redis key \u53d8\u5316\u7684\u5b8c\u6574\u793a\u4f8b\uff0c\u5305\u542b\u8be6\u7ec6\u7684\u914d\u7f6e\u548c\u5b9e\u73b0\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<p><strong>\u4e00\u3001\u73af\u5883\u51c6\u5907<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul>\n<li><strong>\u542f\u7528 Redis \u952e\u7a7a\u95f4\u901a\u77e5<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\u7f16\u8f91\u00a0<code>redis.conf<\/code>\u00a0\u5e76\u6dfb\u52a0\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">notify-keyspace-events \"KEA\"  # \u542f\u7528\u6240\u6709\u952e\u7a7a\u95f4\u548c\u952e\u4e8b\u4ef6\u901a\u77e5\n<\/pre>\n\n\n\n<p>\u91cd\u542f Redis \u6216\u4f7f\u7528\u547d\u4ee4\u4e34\u65f6\u542f\u7528\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">redis-cli config set notify-keyspace-events \"KEA\"\n<\/pre>\n\n\n\n<p><strong>\u5b89\u88c5\u4f9d\u8d56<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">npm install ioredis\n<\/pre>\n\n\n\n<p><strong>\u4e8c\u3001Node.js \u76d1\u542c\u811a\u672c<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">const Redis = require('ioredis');\n\n\/\/ \u914d\u7f6e Redis \u8fde\u63a5\nconst redis = new Redis({\n  host: 'localhost',      \/\/ Redis \u670d\u52a1\u5668\u5730\u5740\n  port: 6379,             \/\/ Redis \u670d\u52a1\u5668\u7aef\u53e3\n  password: 'your-password' \/\/ \u5982\u679c\u6709\u5bc6\u7801\n});\n\n\/\/ \u521b\u5efa\u4e13\u7528\u7684\u8ba2\u9605\u5ba2\u6237\u7aef\uff08\u5efa\u8bae\u4e0e\u4e3b\u5ba2\u6237\u7aef\u5206\u79bb\uff09\nconst subscriber = new Redis({\n  host: 'localhost',\n  port: 6379,\n  password: 'your-password'\n});\n\n\/\/ \u8ba2\u9605\u6240\u6709 key \u53d8\u5316\u4e8b\u4ef6\nasync function subscribeToKeyEvents() {\n  try {\n    \/\/ \u8ba2\u9605\u952e\u7a7a\u95f4\u4e8b\u4ef6\uff08\u683c\u5f0f\uff1a__keyspace@&lt;db>__:&lt;key>\uff09\n    await subscriber.subscribe('__keyspace@0__:*');\n    \n    \/\/ \u8ba2\u9605\u952e\u4e8b\u4ef6\u4e8b\u4ef6\uff08\u683c\u5f0f\uff1a__keyevent@&lt;db>__:&lt;event>\uff09\n    await subscriber.subscribe('__keyevent@0__:set');\n    await subscriber.subscribe('__keyevent@0__:del');\n    \n    console.log('\u5df2\u6210\u529f\u8ba2\u9605 Redis key \u53d8\u5316\u4e8b\u4ef6');\n  } catch (error) {\n    console.error('\u8ba2\u9605\u5931\u8d25:', error);\n  }\n}\n\n\/\/ \u5904\u7406\u63a5\u6536\u5230\u7684\u4e8b\u4ef6\nsubscriber.on('message', (channel, message) => {\n  if (channel.startsWith('__keyspace@')) {\n    \/\/ \u952e\u7a7a\u95f4\u4e8b\u4ef6\uff1amessage \u662f\u4e8b\u4ef6\u7c7b\u578b\uff08\u5982 set\u3001del\uff09\n    const key = channel.split(':')[1];\n    console.log(`Key ${key} \u53d1\u751f\u53d8\u5316: ${message}`);\n    handleKeyChange(key, message);\n  } else if (channel.startsWith('__keyevent@')) {\n    \/\/ \u952e\u4e8b\u4ef6\u4e8b\u4ef6\uff1amessage \u662f key \u540d\u79f0\n    const event = channel.split(':')[1];\n    console.log(`\u4e8b\u4ef6 ${event} \u53d1\u751f\u5728 Key: ${message}`);\n    handleKeyEvent(message, event);\n  }\n});\n\n\/\/ \u81ea\u5b9a\u4e49\u5904\u7406\u51fd\u6570 - \u952e\u53d8\u5316\nfunction handleKeyChange(key, event) {\n  switch (event) {\n    case 'set':\n      \/\/ \u5904\u7406 key \u8bbe\u7f6e\u4e8b\u4ef6\n      redis.get(key).then(value => {\n        console.log(`Key ${key} \u7684\u65b0\u503c\u662f: ${value}`);\n      });\n      break;\n    case 'del':\n      \/\/ \u5904\u7406 key \u5220\u9664\u4e8b\u4ef6\n      console.log(`Key ${key} \u5df2\u88ab\u5220\u9664`);\n      break;\n    case 'expire':\n      \/\/ \u5904\u7406 key \u8fc7\u671f\u4e8b\u4ef6\n      console.log(`Key ${key} \u5df2\u8fc7\u671f`);\n      break;\n    default:\n      console.log(`Key ${key} \u7684\u5176\u4ed6\u4e8b\u4ef6: ${event}`);\n  }\n}\n\n\/\/ \u81ea\u5b9a\u4e49\u5904\u7406\u51fd\u6570 - \u4e8b\u4ef6\u53d1\u751f\nfunction handleKeyEvent(key, event) {\n  console.log(`\u4e8b\u4ef6 ${event} \u5f71\u54cd\u4e86 Key: ${key}`);\n  \/\/ \u6839\u636e\u4e8b\u4ef6\u7c7b\u578b\u6267\u884c\u4e0d\u540c\u903b\u8f91\n}\n\n\/\/ \u542f\u52a8\u8ba2\u9605\nsubscribeToKeyEvents();\n\n\/\/ \u4f18\u96c5\u9000\u51fa\nprocess.on('SIGINT', () => {\n  subscriber.quit();\n  redis.quit();\n  console.log('\u5df2\u65ad\u5f00 Redis \u8fde\u63a5');\n  process.exit();\n});<\/pre>\n\n\n\n<p><strong>\u4e09\u3001\u6d4b\u8bd5\u793a\u4f8b<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u8fd0\u884c\u811a\u672c\u540e\uff0c\u5728 Redis \u5ba2\u6237\u7aef\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u6d4b\u8bd5\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u8bbe\u7f6e key\nredis-cli set user:1 \"John Doe\"\n\n# \u5220\u9664 key\nredis-cli del user:1\n\n# \u8bbe\u7f6e\u5e26\u8fc7\u671f\u65f6\u95f4\u7684 key\nredis-cli setex temp:key 60 \"value\"<\/pre>\n\n\n\n<p>Node.js \u811a\u672c\u5c06\u8f93\u51fa\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">Key user:1 \u53d1\u751f\u53d8\u5316: set\nKey user:1 \u7684\u65b0\u503c\u662f: John Doe\n\u4e8b\u4ef6 set \u53d1\u751f\u5728 Key: user:1\nKey user:1 \u53d1\u751f\u53d8\u5316: del\nKey user:1 \u5df2\u88ab\u5220\u9664\n\u4e8b\u4ef6 del \u53d1\u751f\u5728 Key: user:1\nKey temp:key \u53d1\u751f\u53d8\u5316: set\nKey temp:key \u7684\u65b0\u503c\u662f: value\n\u4e8b\u4ef6 set \u53d1\u751f\u5728 Key: temp:key\n...60\u79d2\u540e...\nKey temp:key \u53d1\u751f\u53d8\u5316: expire\nKey temp:key \u5df2\u8fc7\u671f\n\u4e8b\u4ef6 expire \u53d1\u751f\u5728 Key: temp:key<\/pre>\n\n\n\n<p><strong>\u56db\u3001\u5173\u952e\u914d\u7f6e\u8bf4\u660e<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ol>\n<li><strong>Redis \u4e8b\u4ef6\u7c7b\u578b<\/strong>\n<ul>\n<li><code>KEA<\/code>\uff1a\u542f\u7528\u6240\u6709\u952e\u7a7a\u95f4\u548c\u952e\u4e8b\u4ef6\uff08\u751f\u4ea7\u73af\u5883\u5efa\u8bae\u6309\u9700\u542f\u7528\uff0c\u5982\u00a0<code>Ex<\/code>\u00a0\u4ec5\u76d1\u542c\u8fc7\u671f\u4e8b\u4ef6\uff09<\/li>\n\n\n\n<li>\u5e38\u7528\u4e8b\u4ef6\uff1a<code>set<\/code>\u3001<code>del<\/code>\u3001<code>expire<\/code>\u3001<code>rename<\/code>\u3001<code>hset<\/code>\u00a0\u7b49<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u8ba2\u9605\u6a21\u5f0f<\/strong>\n<ul>\n<li><code>__keyspace@&lt;db>__:&lt;key><\/code>\uff1a\u76d1\u542c\u7279\u5b9a key \u7684\u6240\u6709\u4e8b\u4ef6<\/li>\n\n\n\n<li><code>__keyspace@&lt;db>__:*<\/code>\uff1a\u76d1\u542c\u6240\u6709 key \u7684\u6240\u6709\u4e8b\u4ef6<\/li>\n\n\n\n<li><code>__keyevent@&lt;db>__:&lt;event><\/code>\uff1a\u76d1\u542c\u7279\u5b9a\u4e8b\u4ef6\u7684\u6240\u6709 key<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u591a\u6570\u636e\u5e93\u652f\u6301<\/strong>\n<ul>\n<li>\u5c06\u00a0<code>0<\/code>\u00a0\u66ff\u6362\u4e3a\u5b9e\u9645\u6570\u636e\u5e93\u7f16\u53f7\uff08\u5982\u00a0<code>__keyspace@1__:*<\/code>\uff09<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p><strong>\u4e94\u3001\u751f\u4ea7\u73af\u5883\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ol>\n<li><strong>\u6027\u80fd\u5f71\u54cd<\/strong>\n<ul>\n<li>\u5927\u91cf\u4e8b\u4ef6\u53ef\u80fd\u5f71\u54cd Redis \u6027\u80fd\uff0c\u5efa\u8bae\u4ec5\u76d1\u542c\u5fc5\u8981\u4e8b\u4ef6\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u53ef\u9760\u6027\u4fdd\u969c<\/strong>\n<ul>\n<li>\u4f7f\u7528\u00a0<code>ioredis<\/code>\u00a0\u7684\u81ea\u52a8\u91cd\u8fde\u673a\u5236\uff08\u9ed8\u8ba4\u5f00\u542f\uff09<\/li>\n\n\n\n<li>\u6dfb\u52a0\u4e8b\u4ef6\u5904\u7406\u7684\u91cd\u8bd5\u548c\u5e42\u7b49\u6027<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5b89\u5168\u914d\u7f6e<\/strong>\n<ul>\n<li>\u4f7f\u7528 Redis \u5bc6\u7801\u548c TLS \u52a0\u5bc6<\/li>\n\n\n\n<li>\u901a\u8fc7\u00a0<code>max_connections<\/code>\u00a0\u9650\u5236\u8fde\u63a5\u6570<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u76d1\u63a7\u4e0e\u544a\u8b66<\/strong>\n<ul>\n<li>\u76d1\u63a7 Redis \u547d\u4ee4\u8017\u65f6\u548c CPU \u4f7f\u7528\u7387<\/li>\n\n\n\n<li>\u8bbe\u7f6e\u4e8b\u4ef6\u5904\u7406\u8d85\u65f6\u544a\u8b66<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a Node.js \u76d1\u542c Redis key \u53d8\u5316\u7684\u5b8c\u6574\u793a\u4f8b\uff0c\u5305\u542b\u8be6\u7ec6\u7684\u914d\u7f6e\u548c\u5b9e\u73b0\u6b65\u9aa4\uff1a \u4e00\u3001\u73af\u5883\u51c6\u5907 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"_links":{"self":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/17439"}],"collection":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=17439"}],"version-history":[{"count":1,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/17439\/revisions"}],"predecessor-version":[{"id":17440,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/17439\/revisions\/17440"}],"wp:attachment":[{"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17439"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17439"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}