MongoDB learning-Continuous updates and continuous mongodb Learning
Refer to the MongoDB authoritative guide for more information and updates in this article.
Advantages of MongoDB
MongoDB has rich data models and is a document-oriented database.
It i
MongoDB BASICS (9) sharding and mongodb Basics
Sharding stores data on multiple servers. Mongodb uses sharding to support deployment of very large datasets and high throughput operations. The capabilities of a single server are limited in various aspects, such as CPU, IO, RAM, and storage space. To solve the expansion problem, the database provides two methods:
All content involving internal structures is abstract, but the structure of things often determines the nature of things. If you want to know mongodb in a more fundamental way, take it easy!
Let's talk nonsense and step into the topic:
MongoDB is a portable database that can be used on every popular platform, the so-called cross-platform feature.
A running MongoDB
Used MySQL database, the whole day is to write a large heap of SQL statements, to remember that these SQL keywords are going to take a few days, write the eggs are exploded, when the contact to MongoDB, found not to write SQL, instantly feel tall on, instantly generated the impulse to learn to use it.1.MongoDB IntroductionMongoDB is a powerful, flexible, and scalable way of storing data. It extends the many
MongoDB cluster technology: replica set sharding, mongodb ClusterA MongoDB replica set is a process of synchronizing data to multiple servers. The replica set provides redundant backup of data and stores data copies on multiple servers, this improves data availability, ensures data security, and allows data recovery from hardware faults and service interruptions
First, install MongoDB1. Creating MongoDB user groups and usersGroupadd Mongodbuseradd-r-G mongodb-s/sbin/nologin-m MongoDB2. Download the MongoDB source package and put the source package in the/usr/local/src/directoryDownload page: Https://www.mongodb.com/download-center?jmp=navMongodb-linux-x86_64-rhel62-3.2.10.tgz is used here.: https://fastdl.mongodb.org/lin
First, install MongoDB1. Creating MongoDB user groups and usersGroupadd Mongodbuseradd-r-G mongodb-s/sbin/nologin-m MongoDB2. Download the MongoDB source package and put the source package in the/usr/local/src/directoryDownload page: Https://www.mongodb.com/download-center?jmp=navMongodb-linux-x86_64-rhel62-3.2.10.tgz is used here.: https://fastdl.mongodb.org/lin
I. Download
On the official MongoDB website, we found that there are 32bit and 64bit, which depends on your system, but here are two points of attention:
①: According to industry rules, the even number is "stable version" (for example, 1.6.X, 1.8.X), and the odd number is "development version" (for example, 1.7.X, 1.9.X ), I believe everyone knows the difference between the two versions. The latest version is 2.4.
②: 32-bit
[MongoDB] Serveral common command of MongoDb, mongodbserveral
In the recent days, since the overwork made me exhaused, on arrival to home I will go to bed, which leads to loss of blogs that shoshould have been written in the past days.
Now I make a summay to all the commond of operating mongoDB.
First, you shoshould run the m
MongoDB study NOTE 1: The download and installation of MongoDB are relatively idle over the past few days. I am going to learn about the MongoDB database. Today I have simply learned how to download and install MongoDB, and created a data warehouse that stores MongoDB. Share
MongoDB document deletion and mongodb document deletion skills
? ? The MongoDB remove () function is used to remove data from the set.
? ? You can use the update () function to update MongoDB data. It is a good habit to execute the find () command before executing the remove () function to determine whether the execut
PHP+MONGODB Development Environment Construction (linux+apache+mongodb+php)
I. Preparing the Linux environment (turn off Selinux,iptables, configure initialization operations such as IP)
Two. Prepare the software:
1. Apache: can be installed with Yum, you can also download the source code compilation.
2. MongoDB: Now Linux is not integrated, so to download.
My e
The Spring data for MongoDB is a sub-module of spring data. The goal is to provide a similar, consistent spring-based programming model for MongoDB.
The Spring data for MongoDB Core feature is a document that maps Pojo to MONGO Dbcollection and provides a repository-style data access layer. attributes: 1. 2.MongoTemplate Helper classes (similar to JdbcTemp
MongoDB's OpenDefault startup:$./mongodb Default data save path:/data/db/default port: 27017To Modify the default path:--dbpath$./mongdb--dbpath/mongodb/point the data storage location to a directory of your own/mongodb/To Modify the default port:--port$./mongdb--port 20111 Change the service port to 20111, this is for security, using the default port is easy to
Label:DatabaseMultiple databases can be built in a mongodb. The default database for MongoDB is "DB", and the database is stored in the data directory. In MongoDB you can create a database, and if you want to use MongoDB, creating a database is not necessary. the show DBS command can display a list of all data. [Email
In the previous article, we talked about MongoDB installation and management, which involves some concepts, data structures, and some API calls. It doesn't matter if you don't know it. It's actually very simple. This article will briefly introduce it. 1. Document is the core concept of MongoDB. Multiple key-value pairs are put together in an orderly manner. Document is the most basic data structure for
1), download MongoDB http://downloads.mongodb.org/win32/mongodb-win32-i386-2.4.5.zipDownload the Windows 32-bit version and unzip, the program files are in the bin directory, the other two directories are C + + calls are header files and library files. The bin directory contains the following programs: 1. Mongo.exe, command-line client tools. 2. Mongod.exe, database service program. 3. Mongodump.exe, datab
. Let's take a look at the Benchmark Test of the WiredTiger 3.2 engine. Testing not only focuses on its performance, but also on the execution of checkpoints.
Test using the iiBench tool, which can be found at: https://github.com/mdcallag/iibench-mongodb
Iibench-mongodb tool usage requirements:
Java 1.6 or 1.7
The Java driver of
I learn MongoDB time is not long, but in view of the needs of the work and the future trend of development, I want to deeper understanding of the underlying principles of MONGODB and more flexible application of mongodb, learning while working practice.MongoDB belongs to the most popular database in NoSQL, so we might as well have a basic understanding of NoSQL:N
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