{"id":202003,"date":"2025-05-10T10:36:30","date_gmt":"2025-05-10T02:36:30","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202003\/"},"modified":"2025-05-10T10:36:30","modified_gmt":"2025-05-10T02:36:30","slug":"%e4%bd%bf%e7%94%a8node-js%e5%92%8credis%e6%9e%84%e5%bb%baweb%e7%88%ac%e8%99%ab%ef%bc%9a%e5%a6%82%e4%bd%95%e9%ab%98%e6%95%88%e5%9c%b0%e6%8a%93%e5%8f%96%e6%95%b0%e6%8d%ae","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202003\/","title":{"rendered":"\u4f7f\u7528Node.js\u548cRedis\u6784\u5efaWeb\u722c\u866b\uff1a\u5982\u4f55\u9ad8\u6548\u5730\u6293\u53d6\u6570\u636e"},"content":{"rendered":"

<\/b> <\/p>\n

\u4f7f\u7528Node.js\u548cRedis\u6784\u5efaWeb\u722c\u866b\uff1a\u5982\u4f55\u9ad8\u6548\u5730\u6293\u53d6\u6570\u636e<\/h1>\n

\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u52aa\u529b\u5b66\u4e60\u5427\uff01\u672c\u6587\u300a\u4f7f\u7528Node.js\u548cRedis\u6784\u5efaWeb\u722c\u866b\uff1a\u5982\u4f55\u9ad8\u6548\u5730\u6293\u53d6\u6570\u636e\u300b<\/span>\u4e3b\u8981\u8bb2\u89e3\u4e86<\/span>\u7b49\u7b49\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6211\u4f1a\u5728golang\u5b66\u4e60\u7f51\u4e2d\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u7684\u7cfb\u5217\u6587\u7ae0\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u5e76\u79ef\u6781\u7559\u8a00\u5efa\u8bae\u3002\u4e0b\u9762\u5c31\u5148\u4e00\u8d77\u6765\u770b\u4e00\u4e0b\u672c\u7bc7\u6b63\u6587\u5185\u5bb9\u5427\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n

\u4f7f\u7528Node.js\u548cRedis\u6784\u5efaWeb\u722c\u866b\uff1a\u5982\u4f55\u9ad8\u6548\u5730\u6293\u53d6\u6570\u636e<\/p>\n

\u5728\u5f53\u4eca\u4fe1\u606f\u7206\u70b8\u7684\u65f6\u4ee3\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u4ece\u4e92\u8054\u7f51\u4e0a\u83b7\u53d6\u5927\u91cf\u7684\u6570\u636e\u3002\u800cWeb\u722c\u866b\u7684\u4f5c\u7528\u5c31\u662f\u81ea\u52a8\u5730\u4ece\u7f51\u9875\u4e0a\u6293\u53d6\u6570\u636e\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd\u5982\u4f55\u5229\u7528Node.js\u548cRedis\u6765\u6784\u5efa\u4e00\u6b3e\u9ad8\u6548\u7684Web\u722c\u866b\uff0c\u5e76\u9644\u4e0a\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

\u4e00\u3001Node.js\u7b80\u4ecb<\/p>\n

Node.js\u662f\u4e00\u4e2a\u57fa\u4e8eChrome V8\u5f15\u64ce\u7684JavaScript\u8fd0\u884c\u73af\u5883\uff0c\u5b83\u5c06JavaScript\u7684\u89e3\u91ca\u5668\u5d4c\u5165\u5230\u81ea\u5df1\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u5f62\u6210\u4e86\u4e00\u79cd\u65b0\u7684\u7f16\u7a0b\u6a21\u5f0f\u3002Node.js\u91c7\u7528\u4e8b\u4ef6\u9a71\u52a8\u548c\u975e\u963b\u585eI\/O\u6a21\u578b\uff0c\u4f7f\u5f97\u5b83\u975e\u5e38\u9002\u5408\u5904\u7406\u9ad8\u5e76\u53d1\u7684I\/O\u5bc6\u96c6\u578b\u5e94\u7528\u3002<\/p>\n

\u4e8c\u3001Redis\u7b80\u4ecb<\/p>\n

Redis\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u3001\u5185\u5b58\u6570\u636e\u7ed3\u6784\u5b58\u50a8\u7cfb\u7edf\uff0c\u5b83\u88ab\u5e7f\u6cdb\u4f7f\u7528\u5728\u7f13\u5b58\u3001\u6d88\u606f\u961f\u5217\u3001\u6570\u636e\u7edf\u8ba1\u7b49\u573a\u666f\u4e2d\u3002Redis\u63d0\u4f9b\u4e86\u4e00\u4e9b\u7279\u6b8a\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u548c\u6709\u5e8f\u96c6\u5408\uff0c\u4ee5\u53ca\u4e00\u4e9b\u5e38\u7528\u7684\u64cd\u4f5c\u547d\u4ee4\u3002\u901a\u8fc7\u5c06\u6570\u636e\u5b58\u653e\u5728\u5185\u5b58\u4e2d\uff0cRedis\u53ef\u4ee5\u6781\u5927\u5730\u63d0\u9ad8\u6570\u636e\u7684\u8bbf\u95ee\u901f\u5ea6\u3002<\/p>\n

\u4e09\u3001\u51c6\u5907\u5de5\u4f5c<\/p>\n

\u5728\u5f00\u59cb\u6784\u5efaWeb\u722c\u866b\u4e4b\u524d\uff0c\u6211\u4eec\u9700\u8981\u8fdb\u884c\u4e00\u4e9b\u51c6\u5907\u5de5\u4f5c\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5b89\u88c5Node.js\u548cRedis\u3002\u7136\u540e\uff0c\u6211\u4eec\u9700\u8981\u5b89\u88c5Node.js\u7684\u4e00\u4e9b\u4f9d\u8d56\u6a21\u5757\uff0c\u5305\u62ecrequest<\/code>\u548ccheerio<\/code>\u3002<\/p>\n

npm install request cheerio --save<\/pre>\n
\u56db\u3001\u6784\u5efaWeb\u722c\u866b<\/p>\n
\u6211\u4eec\u9996\u5148\u5b9a\u4e49\u4e00\u4e2aCrawler<\/code>\u7c7b\u6765\u5c01\u88c5\u6211\u4eec\u7684\u722c\u866b\u903b\u8f91\u3002\u5728\u8fd9\u4e2a\u7c7b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528request<\/code>\u6a21\u5757\u6765\u53d1\u9001HTTP\u8bf7\u6c42\uff0c\u4f7f\u7528cheerio<\/code>\u6a21\u5757\u6765\u89e3\u6790HTML\u4ee3\u7801\u3002<\/p>\n
const request = require('request');\nconst cheerio = require('cheerio');\n\nclass Crawler {\n  constructor(url) {\n    this.url = url;\n  }\n\n  getData(callback) {\n    request(this.url, (error, response, body) => {\n      if (!error && response.statusCode === 200) {\n        const $ = cheerio.load(body);\n        \/\/ \u89e3\u6790HTML\u4ee3\u7801\uff0c\u83b7\u53d6\u6570\u636e\n        \/\/ ...\n        callback(data);\n      } else {\n        callback(null);\n      }\n    });\n  }\n}<\/pre>\n
\u7136\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u4f8b\u5316\u4e00\u4e2aCrawler<\/code>\u5bf9\u8c61\uff0c\u5e76\u8c03\u7528getData<\/code>\u65b9\u6cd5\u6765\u83b7\u53d6\u6570\u636e\u3002<\/p>\n
const crawler = new Crawler('http:\/\/www.example.com');\ncrawler.getData((data) => {\n  if (data) {\n    console.log(data);\n  } else {\n    console.log('\u83b7\u53d6\u6570\u636e\u5931\u8d25');\n  }\n});<\/pre>\n
\u4e94\u3001\u4f7f\u7528Redis\u8fdb\u884c\u6570\u636e\u7f13\u5b58<\/p>\n
\u5728\u5b9e\u9645\u7684\u722c\u866b\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u7f13\u5b58\u5df2\u7ecf\u6293\u53d6\u7684\u6570\u636e\uff0c\u907f\u514d\u91cd\u590d\u8bf7\u6c42\u3002\u8fd9\u65f6\uff0cRedis\u5c31\u53d1\u6325\u4e86\u91cd\u8981\u7684\u4f5c\u7528\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Redis\u7684set<\/code>\u548cget<\/code>\u547d\u4ee4\u5206\u522b\u4fdd\u5b58\u548c\u83b7\u53d6\u6570\u636e\u3002<\/p>\n
\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5b89\u88c5redis<\/code>\u6a21\u5757\u3002<\/p>\n
npm install redis --save<\/pre>\n
\u7136\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u5728Crawler<\/code>\u7c7b\u4e2d\u5f15\u5165redis<\/code>\u6a21\u5757\uff0c\u5e76\u5b9e\u73b0\u6570\u636e\u7f13\u5b58\u7684\u529f\u80fd\u3002<\/p>\n
const redis = require('redis');\nconst client = redis.createClient();\n\nclass Crawler {\n  constructor(url) {\n    this.url = url;\n  }\n\n  getData(callback) {\n    client.get(this.url, (err, reply) => {\n      if (reply) {\n        console.log('\u4ece\u7f13\u5b58\u4e2d\u83b7\u53d6\u6570\u636e');\n        callback(JSON.parse(reply));\n      } else {\n        request(this.url, (error, response, body) => {\n          if (!error && response.statusCode === 200) {\n            const $ = cheerio.load(body);\n            \/\/ \u89e3\u6790HTML\u4ee3\u7801\uff0c\u83b7\u53d6\u6570\u636e\n            \/\/ ...\n            \/\/ \u5c06\u6570\u636e\u4fdd\u5b58\u5230\u7f13\u5b58\u4e2d\n            client.set(this.url, JSON.stringify(data));\n            callback(data);\n          } else {\n            callback(null);\n          }\n        });\n      }\n    });\n  }\n}<\/pre>\n
\u901a\u8fc7\u4f7f\u7528Redis\u8fdb\u884c\u6570\u636e\u7f13\u5b58\uff0c\u6211\u4eec\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u722c\u866b\u7684\u6548\u7387\u3002\u5f53\u6211\u4eec\u91cd\u590d\u722c\u53d6\u76f8\u540c\u7684\u7f51\u9875\u65f6\uff0c\u53ef\u4ee5\u76f4\u63a5\u4ece\u7f13\u5b58\u4e2d\u83b7\u53d6\u6570\u636e\uff0c\u800c\u4e0d\u9700\u8981\u518d\u6b21\u53d1\u9001HTTP\u8bf7\u6c42\u3002<\/p>\n
\u516d\u3001\u603b\u7ed3<\/p>\n
\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u4ecb\u7ecd\u4e86\u5982\u4f55\u4f7f\u7528Node.js\u548cRedis\u6765\u6784\u5efa\u4e00\u6b3e\u9ad8\u6548\u7684Web\u722c\u866b\u3002\u9996\u5148\uff0c\u6211\u4eec\u4f7f\u7528Node.js\u7684request<\/code>\u548ccheerio<\/code>\u6a21\u5757\u6765\u53d1\u9001HTTP\u8bf7\u6c42\u5e76\u89e3\u6790HTML\u4ee3\u7801\u3002\u7136\u540e\uff0c\u6211\u4eec\u901a\u8fc7\u4f7f\u7528Redis\u8fdb\u884c\u6570\u636e\u7f13\u5b58\uff0c\u53ef\u4ee5\u907f\u514d\u91cd\u590d\u8bf7\u6c42\uff0c\u63d0\u9ad8\u722c\u866b\u7684\u6548\u7387\u3002<\/p>\n
\u901a\u8fc7\u5b66\u4e60\u672c\u6587\uff0c\u5e0c\u671b\u8bfb\u8005\u53ef\u4ee5\u638c\u63e1\u5982\u4f55\u4f7f\u7528Node.js\u548cRedis\u6784\u5efaWeb\u722c\u866b\uff0c\u5e76\u80fd\u591f\u6839\u636e\u5b9e\u9645\u9700\u6c42\u8fdb\u884c\u6269\u5c55\u548c\u4f18\u5316\u3002<\/p>\n
\n
\n <\/dt>\n
\n   Redis\u5728Rust\u8bed\u8a00\u9879\u76ee\u4e2d\u7684\u5e94\u7528\u6307\u5357\n <\/dd>\n<\/dl>\n
\n
\n <\/dt>\n
\n   \u4f7f\u7528Python\u548cRedis\u6784\u5efa\u5728\u7ebf\u95ee\u5377\u8c03\u67e5\uff1a\u5982\u4f55\u5b9e\u73b0\u6570\u636e\u6536\u96c6\u4e0e\u5206\u6790\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
\u4f7f\u7528Node.js\u548cRedis\u6784...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-202003","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202003","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202003"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202003\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202003"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202003"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202003"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}