MongoDB

Sqlserver/42852.htm Target=_blank > MongoDB configuration file configuration:Step one: Create a new file in the "D:mongodb" directory, not limited to the command, such as creating a new mongodb.confStep Two: Configure the configuration items we need

Operating System: CentOS 7.0 64-bit MongoDB database version:mongodb-linux-x86_64-2.6.5 preparatory work: MongoDB Database Installation Specific actions: First, configure the MongoDB main Library The following

Description Operating system: CentOS 6.X 64-bit MongoDB Database server: IP Address: 192.168.21.130 Web server: IP Address: 192.168.21.127 PHP Installation path:/usr/local/php To achieve the purpose: Install PHP MongoDB database extensions,

This article will describe the process of installing MONGODB extension in Wamp environment, you can have a little reference Linux version can refer to the previous Linux installation php MongoDB extension Installation Environment System

MongoDB cluster refactoring, freeing up disk space Since MongoDB deletes part of the data, it does not reclaim the disk space, so it frees up disk space by rebuilding the data directory. An experimental environment A replica set is configured

The example of this article describes the implementation method of MongoDB ID. Share to everyone for your reference, specific as follows: First create an automatic growth ID collection IDs >db.ids.save ({name: "User", id:0}); You can

Objective It is well known that the current use of Node.js + MongoDB has become a technology stack for many companies. Thinkjs actually provides support for MONGO, although the official documentation is small, but the ORM API is guaranteed to be

Split table is a common solution to the bottleneck of a single table database, in the actual application scenario can partially solve the single table write pressure and read pressure, but also bring some more complex impact: Aggregating queries

Before writing a article about Gridfs, but there is no information about the deletion of Gridfs, now make up, a bit of a sense of the title party. 1, Command mode [root@localhost ~]# mongofiles Delete 111.jpg//delete 111.jpgConnected

Transferred from: http://www.ha97.com/4580.htmlThis picture is from Ricky Ho's blog, MongoDB Architecture (MongoDB Architecture), which is a very broad topic to listen to, but the author does have an analysis of MongoDB's internal-to-external

I. INTRODUCTION to mongodb installation in the previous sectionInstalling php mongodb with macos2: laravel5.1 installation process http://www.golaravel.com/laravel/docs/5.1/#installationIII. laravel5.1 install mongodbComposer require

How is the master node elected for replica set failover? Can I manually interfere with the Dismounting of a master node.Officially, the number of replica sets is preferably an odd number. Why?How is the mongodb replica set synchronized? What happens

First, let's talk about the principle of Map-Reduce.For the basic principles of Map-Reduce, see the following figure:For the entire data processing process, see the official figure above. First, Query the data to be processed, map the data in the

Next, I will talk about the group function of mongodb, which is quite powerful. It is quite complicated to use, such as find (), skip (), and distinct.Test data The code is as follows:Copy code > Db. fruit. find ();{"_ Id": 1, "category": "fruit"

By default, a _ id field is used as the autoincrement auto-increment implementation. The _ id field type is objectid (objectid is a 12-byte BSON type ). ObjectId.Now, due to database migration, some of the central mysql locations tables in the

Today, my colleague asked me to enable remote access to mongodb, so they can test it. If you have not installed mongodb, please refer to my article Centos to install MongoDB.System: centos 5.x1. Modify the mongodb configuration fileVi/etc/mongod.

In another way, we can add a random key (random) to each document, generate a random number using the Math. random () method, and store it in the document. During query, a random number is also generated using Math. random (), and a document with a

$ Push: add an element to the document array. If this array is not available, the array is automatically added. The code is as follows:Copy code Db. users. insert ({"name": "zhang "})Db. users. update ({"name": "zhang" },{ "$ push": {"emails":

The simplest start method is foreground startup. Only the data directory is specified and the default port 27107 is used. It can be directly used under cli. /mongo is connected to the local mongodb, which is generally only used for temporary

The code is as follows:Copy code  {"_ Id": ObjectId ("504eea97e4b023cf38e34039"), "in_ts": NumberLong ("1347349143699"), "log": {"guid": "success ", "p": "View_Prop_YepPage_Zheng", "cid": "11", "url": "http://shanghai.haozu.com/rental/broker/n/104