MongoDB

MongoDB is a document database, it can be easily applied to most languages, followed by the implementation is C + +, according to the test of the relevant personnel to prove that MongoDB query performance is better than the current market many NoSQL

First, prefaceRecently began to learn the non-relational database MongoDB, but in the blog Park can not find a comparative system of the tutorial, a lot of information to consult English site, inefficient. I am not, by self-learning opportunities to

SummaryThe previous article introduced CRUD operations, which will basically do a lot of work. However, if you encounter the operation of statistical classes, then you need to learn the contents of this article.Related articlesGetting started with

First, install the Homebrew" $ (curl-fssl https://raw.githubusercontent.com/Homebrew/install/master/install) "If you have already installed Homebrew, please update it first:Brew UpdateIi. installation of MongoDBinstall MongoDB [--with-openssl]Third,

1. Installing MongoDB serverHere you look directly at my previous blog post "How to properly install MongoDB on Windows";In fact, it only takes four steps to install a MONGODB server:1, to the official website to download MongoDB, and decompression;2

MongoDB's log growth is fast,/Var space is immediately full, even if you change to another disk partition to save the log, the log is growing fast, the disk to see the chime.A good way to do this is to use a rotational log.MongoDB rotation Log a bit

Starting with MongoDB 3.0, a running instance is required when the Mongorestore is restored. Earlier versions did not have this requirement.1. Deploy a replication set for each shard(1) Each member of the replication set initiates a

MongoDB vs. mysql command comparisonThe traditional relational database is usually composed of three hierarchical concepts of database, table, record, and MongoDB is made up of database, collection (collection), Three levels of document objects.

MongoDB Data BackupIn MongoDB we use the Mongodump command to back up MongoDB data. The command can export all data to the specified directory.The Mongodump command allows you to specify the server to which the exported data can be dumped by

Meteor a mistake at the test today.As follows:MongoDB had an unspecified uncaught exception.This can be caused by MongoDB being unable to write to a local database.Check that you have permissions to write to .meteor/local. MongoDB doesnot support

Basic syntaxThe syntax format for MongoDB database creation is as follows:Use database_nameIf the database does not exist, create the database, or switch to the specified database.InstanceThe following example we created the database Coderschool:>

Recently, in the area of. NET DDD development, there's a very hot frame called ASP. Boilerplate looks really good, why do I feel so good?First: I can't read it.Second: The number of people concerned, I choose the framework is like entering a

MongodbInstallation section:Visit MongoDB Download MongoDB (2.6.0) Here we download Mac OS X 64-bit1. The download should be tgz package such as Mongodb-osx-x86_64-2.6.0.tgz2. Perform the decompression command on the terminal TAR-ZXVF mongodb-osx-x86

Novice MongoDB May and I have the same question, MongoDB is a document-type, then if a document nested another document, if the nested document is added to the search and deletion.It's like this: How do you add and revise the name inside the auther?

Version is: Mongodb 3.2.1Would like to use Python to do a reptile and then crawl some data to put on the database, think that NoSQL will be very popular, the use of MongoDB, the result, a toss is not easy.　　The first problem encountered: official

Replica sets (replica set) is a new feature that starts with the mongodDB1.6 version number. It can realize fault self-switchover and self-active repair function member node function, the data between each db is identical, greatly reduces the risk

MongoDB CREATE DATABASE syntaxThe syntax format for MongoDB database creation is as follows:Use database_nameIf the database does not exist, create the database, or switch to the specified database.InstanceThe following example we created the

First, the preparatory work:1, start the Mongodb:bin directory run2. Insert a piece of data into the test database:Second, the official start:1, through the application Generator tool express to quickly create an application skeleton, refer to

Official download of the compressed ZIP file for Windows platform in MongoDB, address: https://www.mongodb.org/dr/fastdl.mongodb.org/win32/mongodb-win32-x86_ 64-3.2.1.zip/download1, unzip the zip file, my path is: F:\StudyTools\MongoDB2. Set the

Remove duplicate records from mongodb group query statistics The mongodb version is, MongoDB shell version: 2.4.4The operating environment and shell window are as follows: [mongo_user@mongodb_dbs ~]# mongo --port 30100MongoDB shell version: