MongoDB

1. BULK INSERT: Inserting multiple documents one at a time in an array can be done in a single TCP request, avoiding additional overhead in multiple requests. In terms of data transfers, the bulk-inserted data contains only one message header, and

Installation Configuration Nginx Method One: Install the latest version of the Nginx 1, download nginx1.7.4 Note: Download address: http://nginx.org/download/nginx-1.7.4.tar.gzWget-c http://nginx.org/download/nginx-1.7.4.tar.gz2, installation

A few days ago, a development colleague found me saying that the mongodb of his test environment often hung up and asked me to write a monitor or resurrection script. I think it is strange that the test environment is not a load, often hanging off

This article mainly introduces Java operation MongoDB. Development environment: System:windows Ide:eclipse, MyEclipse 8 Database:mongodb To develop a dependent library: JavaEE5, Mongo-2.5.3.jar, Junit-4.8.2.jar First, preparatory work 1,

Heard that the project inside aggregation use more, then specifically for this a lot of practice. The basic operations include: • $project-You can extract fields from subdocuments, and you can rename fields • $match-the ability to find •

NoSQL has been in vogue for a long time, so what exactly is the scene you need to use these "new things", like MongoDB? Here are some summaries: You expect a higher write load By default, MongoDB is more concerned with the high insertion speed

The aggregation made by group is somewhat complex. Select the key on which the group is based, and then mongodb the collection according to the selected key values to several groups. You can then produce a result document by aggregating the

MongoDB Collections (collection) can be viewed as tables of relational databases, and document objects (documents) can be viewed as a record of relational databases. But the two are not exactly equal. The structure of the table is fixed, the MongoDB

A few days ago, a development colleague found me saying that the mongodb of his test environment often hung up and asked me to write a monitor or resurrection script. I think it is strange that the test environment is not a load, often hanging off

In front of the MongoDB installation, configuration, clustering, as well as PHP inserts and updates, please refer to: MongoDB.Let's say, the common operations of MongoDB Select Test data: Copy Code code as follows: {"_id": 1, "title":

This example for you to share the Java Operation MongoDB Fuzzy query and paging query for your reference, the specific contents are as follows Fuzzy query conditions:1. Perfect MatchPattern pattern = pattern.compile ("^name$",

The development of MONGODB management tools Mongocola has entered its third year. The official lack of input to C # has led to a lot of things that have to be done on their own, but in any case, the tools are powerful now. Recently ready to start

Encounter problems: early morning received the alarm, a MONGODB server CPU load more than 8. Because it did not affect the business, the next morning began to check the reasons.Check the reason:1. First understand what the application on this server

ObjectiveMongoDB is a distributed file store-based database written in the C + + language and is a popular one in today's NoSQL databases, designed to provide scalable, high-performance data storage solutions for Web applications.MongodbBrief

This does not require disk scan statistics, but rather the use of database statistics. This allows you to accurately record what files are available to the current user.Two methods:1. After the client uploads the file successfully, the HTTP post

MongoDB Replica Set Overviewtake a piece from the official MongoDB document: http://docs.mongodb.org/manual/core/replication-introduction/650) this.width=650; "Src=" http://images.cnitblog.com/blog/288950/201308/11144626- E95b0689174d4727974d39c02fd5

1 Logical architecture1.1 Logical architecture Diagram1.2 Component DescriptionMONGOs (query routers): Query the route, responsible for the client connection, and assign the task to shards, and then collect the results. A cluster can have multiple

When it comes to MongoDB, you have to talk. MongoDB user groups, unlike traditional relational databases, MongoDB does not require the creation of a Rights management group when creating an app. So a database visualizer like Robomongo can directly

MongoDB Paging Scheme (paging method for general databases) (2012-11-06 17:59:55) reproduced Tags: mongodb paging database Jump Category: MongoDB Reprint Please specify source: http://blog.sina.com.cn/s/blog_56545

 After mongodb is installed, there is no administrator. If you want to set an administrator for mongodb, you need to start it with user authorization:/Usr/local/webserver/mongodb/bin/mongod -- dbpath =/usr/local/webserver/mongodb/data -- logpath