MongoDB

In the MongoDB replica set, the primary node handles read and write requests from the client, and the backup node is responsible for mapping the master node's data.How the backup node works can be described roughly as the backup node polls the data

I remember a few days ago a small partner to check the MongoDB log, so as to troubleshoot problems, may not find the log where the logs, today, the system said MongoDB log system. There are four main types of logs in MongoDB. are system log, journal

Objective Previously used by the thread of MongoDB, this time for a small task, I installed a bit of MongoDB. Just review it and post it directly in the blog. To install MongoDB is very simple, basically download MongoDB MSI file, double-click

Insert: Number of inserts in one secondQuery: Number of queries in one secondUpdate: Number of updates in one secondDelete: Number of deletions in one secondGetmore: Getmore operation of cursor at query timeCommand: Number of commands executed in

Event Types: Total Readlock Writelock Queries Getmore Insert Update Remove Commands You can use the following command: Db.admincommand ("Top") Use Admindb.runcommand ({top:1}) Output : {   "Totals"  :

First, the use of wget download MongoDB official website installation files.     wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.6.5.tgz Second, decompression, installation, configuration TAR-XVF mongodb-linux-x86_64-2.6.5.tgz #解压mv

Basic conceptsMongoDB is a document-oriented database, not a relational database. MongoDB is modeless, meaning that the document's keys do not need to be defined in advance, nor are they immutable.There are some new definitions in MongoDB compared

Turn from: http://www.cnblogs.com/huangxincheng/archive/2012/02/18/2356595.html (slightly modified)1. Download MongoDB: Http://www.mongodb.org/downloads;(Mine is mongodb-win32-x86_64-2008plus-2.6.3)2. Unzip the downloaded

Step by step, from unknown to ignorant to ...Footprints never stop ...Mongodb+asp.net Webapi Open Platform series gradually approaching ...Grooming the knowledge points in this project include Mongodb,asp.net Webapi oauth2 elasticsearch MVCMongoDB

1. Download Address: Http://www.mongodb.org/downloads (32-bit or 64-bit option). I downloaded: mongodb-win32-x86_64-2.4.5.zip2, unzip the Mongodb-win32-x86_64-2.4.5.zip put to a certain location, decompression. I put it in the D:\dev directory. The

os:win8.1 with UpdateKeyword: nodejs,expressjs,socketio,mongodb.1. Source code Download: https://github.com/ldlchina/ESMNodeAppTemplate2. Server Environment configuration:Install nodejs:http://www.nodejs.org/.Install

below we install the latest MongoDB 2.6.5 version on the CentOS 6.5 x64 system. in MongoDB v 2.6.5 version of the software warehouse a total of five packages:1) mongodb-orgThis package is a metadata package that can be implemented to automatically

The first use of MongoDB in 2013, the project team for new product development, the use of MongoDB, as a team of testers, and then learned.1. Learn about MongoDBMongo DB is a non-relational database (NOSQL) that is currently very popular in the IT

http://blog.chinaunix.net/space.php?uid=22270773&do=blog&id=19935171. If there is no special use, Suggest: Table name, field name all in lowercase letters. 2. To shorten the length of the field name as much as possible, consider creating a key and

The recent focus on big data will naturally focus on the NoSQL database, which is of course mongodb.NoSQL databases are mostly K,V databases, and this is not a new noun, berkerly db has been around for many years and now belongs to Oracle.The

The installation and use of MongoDBRecent projects need to be used to MongoDB, thus beginning to familiarize with NoSQL, with this article, documenting and facilitating others.MongoDB Installation: Http://www.mongodb.org/downloads Here I choose Win32

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Tokumx vs Mongodb, tokumxvsmongodb Mongodb is a document-type nosql database. The biggest advantage of using C ++ to write Mongo DB is that all data persistence operations do not require developers to manually write SQL statements, CRUD operations

How to catalog databases in the local database in DB2 Problem: There are two instances on the same node. If you want to access the database in another instance under one of the instances, there are two methods: 1. the catalog local node method is

DB2 "Thetransactionlogforthedatabaseisfull" Problem and Solution DB2 reports "The transaction log for the database is full .. "error. I checked the document because the DB2 log file is full. First, run the following command to view the log