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This article will explain in detail why MongoDB is a trend, and the content of the article is of high quality, so the editor will share it with you for reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.

1. What is MongoDB?

MongoDB is an extensible, high-performance open source documentation (Document-Oriented) database. It is developed by C++, supports complex data types and powerful query language, and provides most of the functions of relational database. MongoDB has been widely used in various fields because of its high performance, easy to deploy, easy to use and so on.

2. What is the applicable scenario for MongoDB?

The main goal of MongoDB is to build a bridge between the key / value storage mode (which provides high performance and high scalability) and the traditional RDBMS system (with rich features), which combines the advantages of both. According to the description of the official website

● website data: Mongo is very suitable for real-time insert, update and query, and has the replication and high scalability required for website real-time data storage.

● caching: due to its high performance, Mongo is also suitable as a cache layer for the information infrastructure. After the system restart, the persistent cache layer built by Mongo can avoid the data source overload of the lower layer.

● large-size, low-value data: it may be expensive to use traditional relational databases to store some data. Before that, programmers often choose traditional files for storage.

● 's highly scalable scenario: Mongo is ideal for databases consisting of dozens or hundreds of servers, and Mongo's roadmap already includes built-in support for the MapReduce engine.

● is used for the storage of objects and JSON data: Mongo's BSON data format is very suitable for document format storage and query.

There are also some restrictions on the use of MongoDB, for example, it is not suitable for the following places.

● highly transactional systems: for example, banking or accounting systems. At present, the traditional relational database is more suitable for applications that require a large number of atomic complex transactions.

● traditional business intelligence applications: BI databases for specific problems will produce highly optimized queries. For such applications, data warehouse may be a more appropriate choice.

● needs a problem with SQL.

3. Characteristics of MongoDB

It is characterized by high performance, easy to deploy, easy to use, and it is very convenient to store data. The main functional features are:

* for collection storage, it is easy to store data of object type.

Mongodb Cluster reference

Mongodb Cluster reference

* Mode freedom.

* dynamic query is supported.

* full indexing is supported, including internal objects.

* query is supported.

* replication and failure recovery are supported.

* use efficient binary data storage, including large objects such as video, etc.

* automatically handle fragments to support scalability at the cloud computing level.

* RUBY,PYTHON,JAVA,C++,PHP,C# and other languages are supported.

* the file format is BSON (an extension of JSON).

* accessible through the network.

On why MongoDB is a trend to share here, I hope that the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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