cappedMax在Ubuntu上的Node.js中的winston-mongodb记录器中不起作用 [英] cappedMax not working in winston-mongodb logger in Node.js on Ubuntu

问题描述

我已经使用winston模块在Node.js中创建了一个记录器，并通过要求具有以下选项的winston-mongodb模块来添加MongoDB传输:

I have created a logger in Node.js using the winston module and added MongoDB transport by requiring winston-mongodb module with the following options:

{
  db: config.db[k.DB_ENV.AUTHOR],
  username: config.dbUser,
  password: config.dbPassword,
  collection: 'log-aggregation',
  storeHost: true,
  capped: true,
  cappedMax: 10 // documents
}

我希望记录器为每10个文档创建一个新集合.但是记录器会继续登录相同集合.我评论了collection: 'log-aggregation'行，以检查选项是否真的起作用，然后开始记录到默认的'log'集合.

I expect the logger to create a new collection for every 10 documents. But the logger continue logging in the same collection. I commented the collection: 'log-aggregation' line to check if the options are really working and then it began to log to the default 'log' collection.

那我的错误在哪里? cappedMax选项是否没有最小文档大小?我尝试使用cappedSize选项(也具有10到1000个值)来进行此操作，但仍未创建新集合.

So where is my mistake? Is there a minimum no of document size to the cappedMax option? I tried this with cappedSize option also with 10 to 1000 values, still the new collections are not created.

我想知道cappedSize和cappedMax选项的最小和最大允许值吗?

I want to know the minimum and maximum permissible value for cappedSize and cappedMax option?

我还想知道创建的新馆藏的名称是什么?

I also want to know what will be the name of new collections created?

推荐答案

这是我用来获取多个日志的方法:

This is what I use to get multiple logs:

var winston = require('winston');
require('winston-mongodb').MongoDB;


winston.loggers.add('userLog',{
    transports : [
        new(winston.transports.MongoDB)({
            db : 'mongodb://username:password.mongolab.com:5555/log_db',
            collection : 'userLog',
            capped : true
        }),
    ]
});
winston.loggers.add('profileLog',{
    transports : [
        new(winston.transports.MongoDB)({
            db : 'mongodb://username:password.mongolab.com:5555/log_db',                collection : 'profileLog',
            capped : true
        }),
    ]
});

它运行良好，没有明显的延迟.

And it works fine with no observable latency.

P.S.您可以在capped:true

玩得开心！

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