Difference between Redis and MariaDB

1. 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 is 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. 2. MariaDB : MariaDB is an open source relational database management system (RDBMS) that is a compatible drop-in replacement for the widely used MySQL database technology. It is developed by MariaDB Foundation and initially released on 29 October 2009. MariaDB has a significantly high number of new features, which makes it better in terms of performance and user-orientation.
Difference between Redis and MariaDB :

S.NO.	Redis	MariaDB
1.	It developed by Redis labs and initially released on May 10, 2009.	It is developed by MariaDB Foundation and initially released on 29 October 2009.
2.	Redis is written in ANSI and C languages.	MariaDB is written in C, C++, Perl and Bash languages.
3.	The primary database model for Redis is Key-Value store.	The primary database model for MariaDB is Relational DBMS.
4.	Redis is Data Schema free.	In MariaDB Data Schema supports Dynamic columns.
5.	Redis does not supports XML data format.	MariaDB supports XML data format.
6.	Redis supports both Master-Slave Replication and Multi-Master Replication.	MariaDB supports both Master-Slave Replication and Master-Master Replication.
7.	Redis does not provides the concept of Referential Integrity. Hence, no Foreign Keys.	MariaDB provides the concept of Referential Integrity and have Foreign keys.
8.	Redis supports secondary indexes only with RediSearch module.	MariaDB supports secondary indexes without any restrictions.
9.	Server operating systems for Redis are BDS, Linux, OS X, Windows.	Server operating systems for MariaDB are FreeBSD, Linux, Solaris, Windows.
10.	Famous companies like Twinkl Educational Publishing, Merrill Corporation, ASOS.com Limited, Owler, Inc., etc uses Redis.	Famous companies like CUNY, Accenture, Docplanner, Grooveshark, Northrop Grumman, uses MariaDB.