The Storage Engine

Question

In MariaDB's architecture, what is the primary purpose and behavior of the "Pluggable Storage Engine" API?

Answer 1

It is a plugin that allows MariaDB to connect directly to NoSQL databases like MongoDB and Cassandra using the standard MySQL protocol without needing a local storage engine.

Answer 2

It allows the server to support multiple storage engines (like InnoDB, MyRocks, or Spider) simultaneously, enabling different tables in the same database to use different storage technologies optimized for specific workloads.

Answer 3

It is a deprecated system replaced by the "Unified Buffer Pool," which now requires all tables to share a single, fixed storage format to ensure ACID compliance across the entire instance.

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The Storage Engine