mongodb copy collection

One: Concept The popular copy set is to use multiple machines for the same data asynchronous synchronization, so that multiple machines have multiple copies of the same data, and when the main library when it is off without user intervention,

About MongoDB Mongdb is a cross-platform, document-oriented database that enables high performance, high availability, and easy scalability, and is an open source database system based on distributed file storage. In the case of high load,

The blog has moved Https://www.tianmingxing.com MongoDB is an open-source, document-oriented NoSQL (not only SQL) database written using C + +, and one of the most popular NoSQL databases. NoSQL Introduction NoSQL means "Not just SQL", is the

Recently MongoDB is frequently shot in the hack news. Many people are more claiming to hate Mongodb,david Mytton on his blog revealing many of the existing problems in MongoDB. But the hated one has the same many preferences, as a comeback: Russell

1.MongoDB Simple Description A MongoDB is an open source database system written in C + + language based on Distributed file storage, which aims to provide scalable and high-performance data storage solutions for Web applications. b MongoDB is a

If you have never been familiar with MongoDB or have a little understanding of MongoDB, if you are a C # developer, take a few minutes to read this article. This article will take you step by step to get started easily. Read directory 1:

Environment: Linux: Redhat or CentOS MONGODB installation mode 1: Install MONGODB by configuring Yum, Enterprise Edition and generic version: Not much, just look at the document [root@dominic5 ~]# Ping www.baidu.com PING www.a.shifen.com (180.97.33.7

MongoDB is the most commonly used NODQL database and has risen to the top six in the database rankings. This article describes how to build a highly available MongoDB (shard + replica) cluster.Before you build a cluster, you need to understand

I. Index 1, index operation 1.1 inserting data> use testdbswitched to db testdb> for (i=1;i db.students.find().count()100001.2 Creating an Index在name字段构建升序索引：> db.students.ensureIndex({name: 1}){ "createdCollectionAutomatically" : false,

Mongodb advanced 3: mongodb management and mongodb advanced management Http://blog.csdn.net/stronglyh/article/details/46827141 Usually, there are many win development environments, but the production environment should be put on unix. I.