predefined Mode-Key-Value Pair storage, column storage, document storage, and Graphic Database-Final consistency, not the ACID attribute-Unstructured and unpredictable data-CAP theorem?-High performance, high availability and scalability
Principles
ACID Principle
A (Atomicity) Atomicity
C (Consistency) Consistency
I (Isolation) Independence
D (Durability) Persistence
CAP principles
Consistency (all nodes share the same data at the same time
background by adding the background:true option when creating the index*/
/********************************************************************************************************** ***//********************************************************************************************************** ***/
/*** MongoDB Aggregation*/
/*** MongoDB Aggregation (aggregate) is primarily used to process data (such as sta
NEO4J, FLOCKDB
Object storage
Db4o, Versant
XML database
Berkeley DB XML, BaseX
The following is a partial SQL concept that corresponds to the MongoDB concept:
SQL Terminology/Concepts
MongoDB Terminology/Concepts
Explanation/Description
Database
Database
Database
Mongodb series: first recognized by Mongodb and first recognized by mongodb Series
I. background:
We are honored to have taken part in the examination system maintenance at the beginning of the month. (For more information, see the activities we attended in those years: System Maintenance summary for the first half of the 15 years.) It is mainly responsible for s
MongoDB Study Notes (1) -- install MongoDB in Windows and take mongodb Study Notes
First, download the windows Installation Package for mongodb from the official website, select a 32-bit or 64-bit version based on your system type, and then follow the prompts to complete the next step. If the installation directory is
[Learning MongoDB step by step]-Brief Introduction to MongoDB (1), brief introduction to mongodb
In the previous blog, we spoke about NoSQL. We have a comprehensive understanding of NoSQL. Starting from this blog, we will take everyone into the MongoDB world. Next we will introduce
Mongodb advanced 3: mongodb management and mongodb advanced management
Http://blog.csdn.net/stronglyh/article/details/46827141
Usually, there are many win development environments, but the production environment should be put on unix.
I. Command
There will be a lot of installation, there are a lot of information on the Internet, the following are some parametersQ
One of the primary MongoDB series: MongoDB installation and recommended configuration; Primary mongodb Analysis
The first time I heard about apsaradb for MongoDB, I must have heard a lot about it before I decided to learn about it. No matter what purpose you start to embark on this learning journey, I am also happy to
implemented using hash tables.
Fast search
The data is unstructured and is generally treated as a string or binary data.
Column storage database
Cassandra, HBase, Riak
Distributed File System
Stores data in a column cluster and stores data in the same column.
Fast search speed, high scalability, and easy distributed Expansion
Relatively limited functions
Document Database
CouchDB, MongoDb
Web applications
[MongoDB] Build a mongodb sharding cluster on the windows platform (2). mongodb Cluster
In the previous blog, we talked about the main principles of Mongodb sharding clusters. In this blog, we will mainly describe how to build a sharded cluster. There are two steps to configure a sharding cluster: first, start all the
1. IntroductionBefore in a lot of places have seen this spring Data magical things, do not know what east, finally, today to simple to find out, the bottom is I from the online finishing ...First, explain why you should use spring to integrate MongoDB: Because MongoDB's Java drivers are cumbersome to use, especially when dealing with multiple, deep-level relationships. You need to write a lot of code to construct DBObject. The first thing you must thi
MongoDB learning notes 01 MongoDB installation and use, mongodb learning notes
Recently, due to work needs, I began to contact mongodb, so I began to study mongodb. The first step of the study was naturally from installation and use. there will certainly be more research and
= "content ";Static string content_type = "ctype ";Static string content_length = "clen ";Static string zip = "Zip ";3. the maximum number of indexes in a single MongoDB table is 64.The maximum data volume for non-index sorting is 4 MB. If the maximum data volume is exceeded, an error is returned and the system exits.We recommend that you set the where condition on the index field as much as possible. You must create an index for the sorting field. T
Mongodb advanced 2: mongodb aggregation and mongodb advanced AggregationIn the previous article we talked about mongodb's advanced query: http://blog.csdn.net/stronglyh/article/details/46817789
This article introduces mongodb aggregation.
I. mongodb has many aggregation fram
Tags: index XA requires action set x86 read and Write permissions God BPAinstallation :1 Download Linux installation package 2 on the official website in Linux decompression 3 will unzip the directory MV to the specified installation directoryMV mongodb-linux-x86_64-rhel70-3.6. 5//usr/local/mongodb4 CD to the bin directory, execute the following command to add the environment variable:Export path= $PATH:/usr/local/
[MongoDB] mongodb sharded cluster (iii) on windows platform, mongodb Cluster
In the previous two blogs, we elaborated on the working principle and building process of the sharded cluster. In this blog, we will analyze the testing results of the sharded cluster;
First, check the status of the sharded cluster. We can see that replica set A and replica Set B are nor
C ++ language centerClick Open Link
C ++ driver download
Click Open Link
Install scons: CD build/sconspython setup. py install
Install PCRE and scons [root @:~ /Mongo-cxx-driver-v1.8] # scons after a period of formation, generate lib1_client. So: [root @:~ /Mongo-cxx-driver-v1.8] # lsauthtest clienttest firstexample lib+client. A license.txt sconstruct whereexampleclient config. Log httpclienttest lib+client. So Mongo secondexample
Copy to [root @: ~ in/usr/local/lib @:~ /Mongo-cxx-driver-v1
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