mongodb optimization

This is a creation in Article, where the information may have evolved or changed. This article from: HTTP://WWW.OPEN-OPEN.COM/LIB/VIEW/OPEN1427078982824.HTML#_LABEL3 For more information, see official website: http://docs.mongodb.org/manual/release-notes/3.0/ Reference article: Test: http://www.mongoing.com/archives/862 Http://www.mongoing.com/benchmark_3_0 Configuration: Http://www.mongoing.com/config_3_0 Learning: http://www.mongoing.com/ Migration: Https://github.com/xbsura/mongo-migrate Intr

Getting started with MongoDB Getting Started with MongoDB (PHP client) Simple MongoDB 2.MongoDBInternal Implementation MongoDB Data File internal structure See MongoDB communication protocol from PHP client The internal structure of

MongoDB from the MongoDB the definitive guide MongoDB Index Internal implementation Deep into the MONGODB internal structure 10gen Engineer Speaking Database index implementation Illustration of the implementation principle of MongoDB Geolocation index I

SQL General optimization scheme:1. Using parameterized queries: Prevent SQL injection and precompile SQL commands for increased efficiency2. Remove unnecessary queries and search fields: In fact, in the actual application of the project, many of the query conditions are optional, can be avoided from the source of redundant functions as far as possible, this is the most simple and rough solution.3. Select the most efficient table name order: The databa

Label: first, SQL statement optimization 1-1.mysql Slow Log 1). Slow log on mode and storage formatHow do I find the problematic SQL? Use MySQL slow logs to monitor efficiency issues with SQL Pre-preparation Mysql> Show variables like '%log_queri% '; +-------------------------------+-------+ | Variable_name | Value | +-------------------------------+-------+ | log_queries_not_using_indexes | OFF | +-------------------------------+---

to predict.3. Provide Writeconcern settings for chunk migrationThe new version provides Writeconcern parameters for the equalizer for both Movechunk and cleanuporphaned, which involve chunk migrations.4, increase the equalizer status displayThe status information of the equalizer can be seen in the new version via Sh.status ().Other changes1. Optimize Explan functionThe new version of the Explain function can support query plan display for operations such as Count,find,group,aggregate,update,re

785.3 aggregation command 795.3.1 Group comments by users 795.3.2 apply mapreduce 81 to orders by region5.4 detailed explanation aggregation 825.4.1 max () and min () 825.4.2 distinct 835.4.3 group 835.4.4 map-Reduce 845.5 summary 86Chapter 2 update, atomic operation and deletion 876.1 getting started with document update 876.2 e-commerce data model update 896.2.1 product and category 906.2.2 comment 936.2.3 Order 946.3 atomic document processing 966.3.1 order status change 976.3.2 inventory ma

record the disk areas that are no longer in use (the deleted collection or index ). Whenever the namespace needs to be allocated to a new disk area, you will first check whether $ freelist has a suitable Disk Area. Memory ing storage engine MongoDB currently supports the memory ing engine. When MongoDB is started, all data files are mapped to the memory, and the operating system hosts all disk operations.

: Linux version 2.6.32_1-8-0-0 (gcc version 4.4.4 20100726 (Red Hat 4.4.4-13) (GCC))MongoDB version: 2.2.3, no optimization configuration, stand-alone testMySQL version: 5.1.49, no optimization configuration, stand-alone testTest language: Python 2.7.1Database Interface Driver:Mongodb:pymongo 2.1.1Mysql:mysqldb 1.2.34. Concept PopularizationIn the data stored in

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

script file 2. Awareness of JavaScript Geographical Index of MongoDB: 1. Simple Symfony2-combined with MongoDB development lbs application 2. Schematic MongoDB The realization principle of geographical index 3.mongodb lbs 4.MongoDB Location Query Aggregation and MapReduce o

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

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

[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