MongoDB

This document records the process of building a shard cluster from a MongoDB replica set from scratch.We're going to create a distributed cluster like this: There are two Shard, each shard a replica set, each with two copies (a aribiter in the

DescriptionOperating system: CentOS 5.X 64-bitMongoDB Database server:IP Address: 192.168.21.130Web server:IP Address: 192.168.21.127PHP Installation path:/usr/local/phpPurpose of implementation:Install the MongoDB database extension of PHP, connect

http://www.linkedin.com/groups/Difference-between-elasticsearch-MongoDB-3393294.S.5887644059169730563But you need to Consider:elasticsearch are an index/search engine isn't a database, there is also no inbuild security (like password protection or

This section will take a series of operations on how to insert a document into MongoDB.Suppose we have a MongoDB service on this machine that listens on port 8866.Then first use: MONGO--port 8866 (equivalent to MONGO 127.0.0.1:8866) command into the

When we were doing the project, we encountered the problem of uploading video. Before formally starting the project, a simple demo implementation was made on the video file in MVCUpload and read slowly in MongoDB, this time we implement the file

1. Balance ProfileIf there are multiple shards available, MongoDB will migrate the data to other shards as long as the number of blocks is large enough, and this migration process is called balancing (balancing), which is performed by a process

1. How to create a blockIn the previous understanding of the basic concepts of blocks in the MongoDB shard architecture, here's how to create blocks? When you decide to assign data, you must select a key for the block interval (we've been using

In MySQL, the slow query log is often used as the basis for us to optimize the database, is there a similar function in MongoDB? The answer is yes, that's the MongoDB database Profiler. So MongoDB not only has, but also has some more detailed

1: DownloadHttp://www.mongodb.org/downloadsUnzip the package after uploading it on the 85 machine.first, unzip the installer in Linuxoperation by command:Decompression TAR-ZXVF mongodb-linux-x86_64-2.6.7.gzmongodb-linux-x86_64-2.6.7 renamed to

About MongoDB, not much to say, I would also like to install the experience.MongoDB InstallationI installed the version: mongodb-win32-i386-2.6.71, set up the folder in the D disk d:\mogondb, create folders d:\mongodb\data\db, D:\mongodb\data\log,

The MongoDB shell is more than just an interactive shell, it also supports execution of specified JavaScript files, and also supports execution of specified command fragments. With this feature, MongoDB can be combined with the Linux shell to do

First, set up an index on a key in the Chinese document:1, we know that if the index is used properly, it will greatly improve the query speed, and if the use of improper may cause the overall performance degradation, the index should consider the

Gridfs as a storage mechanism for MongoDB, used to store binary large files;Gridfs has the following advantages:(1) Simplify the storage stack with GRIDFS and replace the Independent storage tool in MongoDB;(2) Gridfs will automatically balance the

Under the Linux platform, either 64-bit or 32-bit MONGODB default maximum connection number is 819,win platform do not know, estimated that no one in the win platform using MONGODB production environment[[email protected] mongodb-linux-i686-2.4.1] #.

Find in addition to the exact query, can match more conditions;First, comparison operators$LT Representative $lte Representative $GT Representative >;$GTE Representative >=;> db.post.find ()    {  "_id"  : objectid ("54a530c3ff0df3732bac1681"),  "id"

Recently in using this thing, to prevent forgetting, write it down.Collection Simple Query methodMongoDB syntax: Db.collection.find ()//collection is the name of the collection, which can be created on its own.Compare SQL statements: SELECT * FROM

In this article we look at MongoDB as an administrator, and as an administrator, there are 4 main areas that we often come into contact with:1. Installation deployment2. Status monitoring3. Security Certifications4. Backup and Recovery,Here we will

With the rise of web2.0, the application of high concurrency large data volume is becoming more and more obvious, and the traditional relational database is weak in this aspect. A spear has its own shield, and the presence of a memory db compensates

Today in MU class network (very good one IT Technology free website) to learn Nodejs development film website, which used to the MONGO database, but in the execution encountered the following error! Failed to connect to 127.0.0.1:27017,

First: DriveIf ASP. NET wants to use a link class that mongodb,.net does not own. Third-party or official link classes.Of course there are many kinds of drivers, and I will not introduce them.Today I'll introduce a driver-----MongoDB that I use more