mongodb group by date

From https://www.linode.com/docs/databases/mongodb/use-mongodb-to-store-application-data-on-centos-5Use the MongoDB to Store application Data on CentOS 5Updated Friday, April 29th, by Linode This guide have been deprecated and is no longer

1 MongoDBMongoDB is written by the C + + language and is an open source database system based on distributed file storage. With high performance, high availability, and automatic scalability. MongoDB stores data as a document and data structures

First, Mongdb3.0 installationDownload the latest stable version of MongoDB software on official websiteHttps://www.mongodb.org/downloadsDecompression software[Email protected] service]# tar zxvf mongodb-linux-x86_64-rhel62-3.0.3.tgz mongodb-linux-x86

/*** MongoDB $type operator*/ /*** The $type operator is based on the Bson type to retrieve the matching data type in the collection and returns the result.* The types of MongoDB that can be used are shown in the following table:* Type Number Notes*

Production Environment Best Practices1. Linux:1] disable the atime option of the file system/partitionVI/etc/fstabAdd noatime and nodiratime after the corresponding partition itemLabel =/1/ext3 defaults 1 1Label =/data1/Data ext4 defaults, noatime,

When it comes to MongoDB's architecture, it is inevitable to compare it with relational databases. Here we take MySQL for example, we make some comparisons:From the logical structure of the comparison: MySQL Hierarchy concept

MongoDB Data Replication shard I. MongoDB introduction: MongoDB is a high-performance, open-source, and non-pattern document-based database. It is a popular NoSql database. It can be used in many scenarios to replace traditional relational databases

MongoDB Database Introduction Characteristics For collection Storage Rich query Statements Replication set mechanism Support for file storage Mode freedom Multilevel index Easy Horizontal

MongoDB basic operation learning notes Record the basic operations of MongoDB today. This is only the most basic operation, so it should be mastered. Database A database is a collection of physical containers. Each database has its own file system.

MongoDB database data aggregation & amp; Pipe operations, mongodb database AggregationThe data aggregation process for pipeline operations on mongodb usually works with pipeline operations. The pipeline operation concept of mongodb is similar to the