MongoDB

Complete example of building a MongoDB cluster (replica set + Shard) ...Prepare four machines, namely BLUEJOE1,BLUEJOE2,BLUEJOE3, and BLUEJOE0The replica set and Shard policy are determined as follows: 3 replica sets will be created, named

first download the database on the official website, the official web provides two forms of the database, one is free installation version, one is installed version, this is similar to Apache Tomcat, the installation version has a visual interface

Using mongodb.bson;using mongodb.driver;using mongodb.driver.builders;using nationalunion.adgallery.model;using Nationalunion.common.utility;using system;using system.collections.generic;using System.Linq;using System.Text; Using

http://space.itpub.net/?uid-20498361-action-viewspace-itemid-7194911, Super User related#进入数据库adminUse admin#增加或修改用户密码Db.adduser (' name ', ' pwd ')#查看用户列表Db.system.users.find ()#用户认证Db.auth (' name ', ' pwd ')#删除用户Db.removeuser (' name

In the software development, we usually is faced with a common question of exporting or importing data from database. So's this blog we'll together study the MONGODDB Export and MongoDB import.First, MongoimportFirst of all, let ' s create many test

One, about using MongoDB on WindowsMongodb Official documentation-Installing MONGODB under Windows Note: MongoDB does not support Windows XP systems It is also easy to install MongoDB on Windows, click on the link above to download

The previous article, "Mongodb.webide: The upgraded version of MongoDB management tools," missing something: It is about the MongoDB master and slave library installation configuration and startup. There are a lot of articles about MongoDB

Translated from http://docs.mongodb.org/manual/core/backups/There are several ways to back up the MongoDB cluster: Backup by copying the underlying data file Back up with Mongodump Cloud Backup via MMS (Mms:mongodb Management

MongoDB is a document-type NoSQL database written in C + + Mongo DB The biggest advantage is that all data persistence operations do not require the developer to manually write SQL statements, directly invoke the method can easily implement CRUD

MongoDB LearningMongoDB Learning说明： MongoDB由databases组成，database由collections组成，collection由documents组成，document由fileds组成。MongoDB是异步写数据。First, MongoDB Introduction Functional characteristics Scope of application Functional

Insert Operation inserting records1. Insert a record Db.testData.insert ({num:1,name: ' a '}); result Writeresult ({"ninserted": 1}) 2. View the inserted record db.testData.find (); Insert Array 1. Define an array var arr = [{ Num:1,name: ' A '},

Dbstats commandThe Dbstats command can return storage information for a specified database, by default displaying storage information in bytes, and you can add a scale parameter, such as scale:1024 for kilobytes display. The time to return

Dbstats commandThe Dbstats command can return storage information for a specified database, by default displaying storage information in bytes, and you can add a scale parameter, such as scale:1024 for kilobytes display. The time to return

Dbstats commandThe Dbstats command can return storage information for a specified database, by default displaying storage information in bytes, and you can add a scale parameter, such as scale:1024 for kilobytes display. The time to return

var args = new Findandmodifyargs { query=query.gte ("X", 2),//x field is greater than or equal to 2 of the value update=update.inc ("X", 2),//will find the value plus 2

Recently due to work needs, to begin to contact with MongoDB, so began to study MongoDB, the first step of research, naturally from the installation and use began. There will certainly be more research and study, so prepare to make a series of

Tag:io   os    use    ar   for    data    2014   on   cti    Process time section, convert isodate ("2014-10-09t18:37:50.0z") to 2014-10-09 18:37:50 This format//up to 6 layers of tree structure data, when a multidimensional array of key, contains

Mongotop can see how long a MongoDB instance spends on reading or writing data, and it provides aggregate-level statistics, while Mongostat provides database-level statistics. Mongotop data is displayed by default once per secondThe relevant

Building MongoDB Shardshttp://gong1208.iteye.com/blog/1622078Sharding Shard ConceptIt is a kind of database cluster system that expands the massive data horizontally, the data table is stored on each node of sharding, and the user can easily

Development: abnormal collection issues related to DB2 table Creation Because the table creation statements may be different when using the DB2 database for the first time, the Manual table creation method is used to fill in fields one by one. Check