MongoDB

Preface:to better use MongoDB, you need to monitor some of the underlying usage of mongodb, such as flush number, number of connections, memory usage, index operation, slave delay, and so on, which can be done by configuring cacti to monitor MongoDB.

Suitable for readers: for MongoDB there is not yet a holistic understanding of beginners. Here is a brief introduction to this ID: Ii. introduction of MongoDB MongoDB is a high-performance, open-source, modeless document-based database that is a

MongoDB is written by C ++ and its name comes from HuMongoIn the middle of the word "us", we can see from the name that its ambition lies in the processing of massive data. The simplest description of this database is scalable, high-performance,

Http://www.cnblogs.com/yoolonet/archive/2011/08/27/2155701.html A series of articles about MongoDB recently used MongoDB as a data storage system to record their own applications and problems in actual development. I hope this will be helpful to my

First of all to ensure that the correct installation of mongodb, Installation Reference: http://docs.mongodb.org/manual/tutorial/install-mongodb-on-debian-or-ubuntu-linux Then download the mongodb driver of nodejs Npm install mongodb Compile a test

ObjectId IntroductionIn MongoDB, a unique _ id field is required to store documents in collections as the primary key. By default, ObjectId is used to define the _ id, because the definition of ObjectId is short enough to maintain uniqueness as much

Today we are going to discuss with you how to make DB2 use all the memory. I have seen materials on the relevant website about how to make DB2 use all the memory, I will share it with you today. The following is a detailed description of the article.

The following articles mainly describe the utility for implementing throttling in the Distributed Management of DB2 9 database and the related commands to be used in actual operations, the following is a detailed description of the main content of

Today, we will mainly describe N knowledge points that we must understand in the actual operation of the DB2 database. Learning to use DB2 includes future maintenance of the DB2 database, there is a lot of knowledge to learn. This article will

This article mainly describes how to import or load multiple DB2 Master/Slave tables correctly and quickly. If you perform the actual operation steps on import or load multiple DB2 Master/Slave tables, if you are interested, you can browse the

There are various tables in the DB2 database. This article will introduce you to the clustering target table. This table is a special table in DB2. If you are interested in this, take a look. There is a special table in the DB2 database called the

The following articles mainly explain how to delete the DB2admin Administrator account correctly. When installing the DB2 database, you must enter a user name, this user name will be used as the user name of your future Computer Administrator. The

Therefore, this article will give some suggestions when explaining how to solve the problem in DB2 to avoid the problem. When using a database, you may encounter different problems. I personally think that the most important thing to solve the

DB2 function calling is one of our most common operations. The following describes the implementation methods of DB2 function calling for your reference. We hope this will help you. If a user defines a function in DB2 that involves a specific table

The DB2 temporary table definition method is unfamiliar to many new users who are new to the DB2 database. The following describes how to define a temporary DB2 table for your reference. 1. The Temporary Table of DB2 needs to be created using the

DB2 databaseIt is a distributed database solution of IBM. It has a high technical level and plays an important role in the database industry. This article outlines six methods to execute DB2 commands. Environment product: DB2 UDB Platform: z/OS

Comparison of unique constraints and unique indexes in DB2 and Oracle: db2 => connect to sample database connection information database server = db2/NT 10.1.0 SQL authorization id = ADMINIST... local Database alias = sample create table db2admin.

Db2 command to modify the log size 1. view db2 configuration information db2 => get db cfg or get db cfg for ; 2. you must use db2 connect to BCDL_SX to modify the db2 Log File Size www.2cto.com, instead of db2 connect to BCDL_SX user cmbbcd_sx

Db2 database restoration command 1. the names of the backup database (olddb) and the data to be restored (newdb) are different: db2 restore db olddb into newdb; www.2cto.com 2. multiple backup files exist in the current directory. you need to

The db2 tutorial is: Daily maintenance Summary of IBM DB2 (2 ). 10. Which command is used to install DB2 under AIX?INSTALLP command　　 11. How many DB2 databases can be installed in the same operating system?Yes　　 12. How do I stop an