1. CouchDB :
2. Redis :
Redis stands for Remote Dictionary Server which is an in-memory data structure project implementing a distributed, in-memory key-value database with optional durability. Redis was developed by Redis labs and initially released on May 10, 2009. It is written in ANSI and C languages. Redis offers memory efficiency, fast operating speed, high availability and provides some features like tunability, replication, clustering, etc.
Difference Between CouchDB and Redis :
|1.||It was developed by Apache Software Foundation and initially released in 2005.||It was developed by Redis labs and initially released on May 10, 2009.|
|2.||It is written in Erlang.||It is written in ANSI and C languages.|
|3.||The primary database model for CouchDB is Document Store.||The primary database model for Redis is Key-Value Store.|
|4.||It supports secondary indexes via views only.||It supports secondary indexes with RediSearch module only.|
|5.||In CouchDB, there is no predefined datatypes.||It supports predefined datatypes.|
|7.||It supports Map Reduce method.||It does not support Map Reduce method.|
|8.||It does not have in-memory capabilities.||It have in-memory capabilities.|
|9.||It supports both Master-Slave Replication and Master-Master Replication.||It supports both Master-Slave Replication and Multi-Master Raeplication.|
|10.||Server operating systems for CouchDB are Android, BSD, Linux, OS X, Solaris and Windows||Server operating systems for Redis are BDS, Linux, OS X and Windows.|
|11.||Famous companies like Twinkl Educational Publishing, Merrill Corporation, ASOS.com Limited, Owler, Inc., etc use Redis.||Famous companies like Akamai Technologies, Hothead Games, Inc., GenCorp Technologies, Vivint Solar, etc uses CouchDB.|
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