Node.js v4 + coã§éåæå¦çã®ããã©ã¼ãã³ã¹ã測å®ããã¨ãããå¦ã³ããã£ãã®ã§ã¡ã¢ã ãã£ãã æåå¼·ä¼ã§éåæå¦çã«ã¤ãã¦èª¿ã¹ã¦ã¿ãã¨ãããcoã使ã£ãæ¸ãæ¹ãããªãã¤ã±ã¦ããªã¨æãã¾ããã ããããã©ã¼ãã³ã¹çã«å¿é ã ããã§å®çªã®Async.jsã¨æ¯è¼ãã¦ã¿ããã¨ã«ãã¾ããã è¨æ¸¬ã¾ã§ã®æµã ãã£ããã ããDBã«ã¤ãªããã¨æããã¢ã³ã´ããã¨ç¹ãã¾ããã æºå npm i co async mongodb ã½ã¼ã¹ã³ã¼ã 'use strict'; const async = require('async'); const co = require('co'); const MongoClient = require('mongodb').MongoClient; const TRY_TIMES = 1000; const url = 'mongodb://localhos
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