When should I use MariaDB instead of Redis?

Drop-in MySQL replacement with additional storage engines and fully open-source governance. Teams wanting MySQL compatibility without Oracle controlling the product roadmap. ColumnStore engine for analytical queries on a MySQL-compatible database

When should I use Redis instead of MariaDB?

Ultra-low-latency caching and session storage with sub-millisecond read and write times. Message brokering via Pub/Sub or Redis Streams for simple event-driven workloads. Leaderboards, rate limiting, and real-time counters using atomic data structures

What are the main weaknesses of MariaDB?

Some MySQL 8.x features are not fully compatible with MariaDB, causing migration friction. Smaller managed cloud service ecosystem than MySQL (Amazon RDS, Amazon Aurora). ColumnStore analytical performance does not match purpose-built columnar warehouses

What are the main weaknesses of Redis?

Data must fit in RAM — not suitable as a primary store for large datasets. Persistence options (RDB snapshots, AOF) add latency or disk I/O overhead. License changed to RSALv2/SSPL in v7.4; Valkey is the open-source fork maintained by the community

MariaDB vs Redis: Key Differences for Python Data Engineering

Databases & Data Warehouses

MariaDB

Enhanced MySQL Fork

★ 4.5

GPL-2.0

pip install mariadb

Redis

In-Memory Data Store

★ 4.7

RSALv2 / SSPL (v7.4+)

pip install redis

Side-by-Side Comparison

MariaDB

Redis

MariaDB

Redis

Best For

✓Drop-in MySQL replacement with additional storage engines and fully open-source governance
✓Teams wanting MySQL compatibility without Oracle controlling the product roadmap
✓ColumnStore engine for analytical queries on a MySQL-compatible database

✓Ultra-low-latency caching and session storage with sub-millisecond read and write times
✓Message brokering via Pub/Sub or Redis Streams for simple event-driven workloads
✓Leaderboards, rate limiting, and real-time counters using atomic data structures

Best For

✓Drop-in MySQL replacement with additional storage engines and fully open-source governance
✓Teams wanting MySQL compatibility without Oracle controlling the product roadmap
✓ColumnStore engine for analytical queries on a MySQL-compatible database

✓Ultra-low-latency caching and session storage with sub-millisecond read and write times
✓Message brokering via Pub/Sub or Redis Streams for simple event-driven workloads
✓Leaderboards, rate limiting, and real-time counters using atomic data structures

Weaknesses

•Some MySQL 8.x features are not fully compatible with MariaDB, causing migration friction
•Smaller managed cloud service ecosystem than MySQL (Amazon RDS, Amazon Aurora)
•ColumnStore analytical performance does not match purpose-built columnar warehouses

•Data must fit in RAM — not suitable as a primary store for large datasets
•Persistence options (RDB snapshots, AOF) add latency or disk I/O overhead
•License changed to RSALv2/SSPL in v7.4; Valkey is the open-source fork maintained by the community

Weaknesses

•Some MySQL 8.x features are not fully compatible with MariaDB, causing migration friction
•Smaller managed cloud service ecosystem than MySQL (Amazon RDS, Amazon Aurora)
•ColumnStore analytical performance does not match purpose-built columnar warehouses

•Data must fit in RAM — not suitable as a primary store for large datasets
•Persistence options (RDB snapshots, AOF) add latency or disk I/O overhead
•License changed to RSALv2/SSPL in v7.4; Valkey is the open-source fork maintained by the community

License

GPL-2.0

RSALv2 / SSPL (v7.4+)

License

GPL-2.0

RSALv2 / SSPL (v7.4+)

Install

pip install mariadb

pip install redis

Install

pip install mariadb

pip install redis

Rating

★ 4.5

★ 4.7

Rating

★ 4.5

★ 4.7

Key Features

MariaDB

1Drop-in MySQL replacement with additional storage engines (Aria, ColumnStore)
2ColumnStore engine provides columnar storage for analytical workloads
3Galera Cluster for synchronous multi-primary replication
4Spider engine enables horizontal sharding across MariaDB nodes
5Temporal tables for built-in historical data versioning

Redis

1Sub-millisecond read/write latency for in-memory data structures
2Support for strings, hashes, lists, sets, sorted sets, streams, and more
3Pub/Sub messaging and Redis Streams for event-driven pipeline patterns
4Built-in TTL expiry for automatic cache invalidation
5Redis Cluster for horizontal scaling and high availability

How Python Data Engineers Use These Tools

MariaDB

Python data engineers use `mariadb` connector or the MySQL-compatible SQLAlchemy dialect to connect to MariaDB. MariaDB's ColumnStore engine is particularly useful for analytical query pipelines — engineers point standard MySQL Python clients at a ColumnStore table for fast aggregations on large datasets without migrating to a dedicated OLAP warehouse.

Redis

Python data engineers use Redis via the redis-py library as a high-speed caching layer, rate-limit store, and task queue broker. Redis is the default broker for Celery-based task queues and is used by Apache Airflow for caching pipeline metadata. In data pipelines, Redis stores intermediate results, deduplication sets, and real-time leaderboards that would be too slow to query from a relational database on every request.

More Databases & Data Warehouses Comparisons

Databases & Data Warehouses

MongoDB vs PostgreSQL

Databases & Data Warehouses

PostgreSQL vs Redis

Databases & Data Warehouses

Apache Cassandra vs PostgreSQL

Databases & Data Warehouses

Neo4j vs PostgreSQL

Databases & Data Warehouses

InfluxDB vs PostgreSQL

Databases & Data Warehouses

Elasticsearch vs PostgreSQL

Individual Tool Pages

View MariaDB details →View Redis details →

Side-by-Side Comparison

MariaDB

Redis

MariaDB

Redis

Best For

✓Drop-in MySQL replacement with additional storage engines and fully open-source governance
✓Teams wanting MySQL compatibility without Oracle controlling the product roadmap
✓ColumnStore engine for analytical queries on a MySQL-compatible database

✓Ultra-low-latency caching and session storage with sub-millisecond read and write times
✓Message brokering via Pub/Sub or Redis Streams for simple event-driven workloads
✓Leaderboards, rate limiting, and real-time counters using atomic data structures

Best For

✓Drop-in MySQL replacement with additional storage engines and fully open-source governance
✓Teams wanting MySQL compatibility without Oracle controlling the product roadmap
✓ColumnStore engine for analytical queries on a MySQL-compatible database

✓Ultra-low-latency caching and session storage with sub-millisecond read and write times
✓Message brokering via Pub/Sub or Redis Streams for simple event-driven workloads
✓Leaderboards, rate limiting, and real-time counters using atomic data structures

Weaknesses

•Some MySQL 8.x features are not fully compatible with MariaDB, causing migration friction
•Smaller managed cloud service ecosystem than MySQL (Amazon RDS, Amazon Aurora)
•ColumnStore analytical performance does not match purpose-built columnar warehouses

•Data must fit in RAM — not suitable as a primary store for large datasets
•Persistence options (RDB snapshots, AOF) add latency or disk I/O overhead
•License changed to RSALv2/SSPL in v7.4; Valkey is the open-source fork maintained by the community

Weaknesses

•Some MySQL 8.x features are not fully compatible with MariaDB, causing migration friction
•Smaller managed cloud service ecosystem than MySQL (Amazon RDS, Amazon Aurora)
•ColumnStore analytical performance does not match purpose-built columnar warehouses

•Data must fit in RAM — not suitable as a primary store for large datasets
•Persistence options (RDB snapshots, AOF) add latency or disk I/O overhead
•License changed to RSALv2/SSPL in v7.4; Valkey is the open-source fork maintained by the community

License

GPL-2.0

RSALv2 / SSPL (v7.4+)

License

GPL-2.0

RSALv2 / SSPL (v7.4+)

Install

pip install mariadb

pip install redis

Install

pip install mariadb

pip install redis

Rating

★ 4.5

★ 4.7

Rating

★ 4.5

★ 4.7

Key Features

MariaDB

1Drop-in MySQL replacement with additional storage engines (Aria, ColumnStore)
2ColumnStore engine provides columnar storage for analytical workloads
3Galera Cluster for synchronous multi-primary replication
4Spider engine enables horizontal sharding across MariaDB nodes
5Temporal tables for built-in historical data versioning

Redis

1Sub-millisecond read/write latency for in-memory data structures
2Support for strings, hashes, lists, sets, sorted sets, streams, and more
3Pub/Sub messaging and Redis Streams for event-driven pipeline patterns
4Built-in TTL expiry for automatic cache invalidation
5Redis Cluster for horizontal scaling and high availability

How Python Data Engineers Use These Tools