Introduction to Mongo Database: Part 1

Introduction
 
In this article we will learn about MongoDB (one of the most popular and fastest growing no SQL databases).
Databases are important for every internet and enterprise application.
Scale, speed and fast application development has brought on a new breed of databases broadly turned to no SQL databases.

What Mongo Database is
 
MongoDB is an open-source document database that provides high performance, high availability, and automatic scaling.
 
Features of Mongo Database
  • MongoDB has no schema, no tables, no rows, no columns and certainly no relationships among tables.
  • In MongoDB we have single-document write scope, a document lives in a collection but updating documents occur one at a time. So if any locking is needed then it would be much simpler, there is no need to extend locks across collections and there are no relationships to enforce.
  • Mongo also offers a special collection called a capped collection that has a fixed size and automatically overwrites old documents.
High Performance
 
MongoDB provides high performance data persistence. In particular:
  • Support for embedded data models reduces I/O activity of the database systems.
  • Indexes support faster queries and can include keys from embedded documents and arrays.
High Availability

To provide high availability, MongoDB’s replication facility, called replica sets, provide:
  • automatic failover.
  • data redundancy.
A replica set is a group of MongoDB servers that maintain the same data set, providing redundancy and increasing data availability.

Automatic Scaling

MongoDB provides horizontal scalability as part of its core functionality.
  • Automatic sharding distributes data across a cluster of machines.
  • Replica sets can provide eventually-consistent reads for low-latency high throughput deployments.
 
Summary

In this article we have learned what is MongoDB  and the advantages. 


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