How Meta Uses Databases to Power the World

Описание: Meta uses a variety of SQL and NoSQL databases tailored to different needs.
Some of the key databases used by Meta include MySQL, TAO which is Facebook's graph data store, Cassandra, and HBase.

Meta database engineer primarily relies on MySQL for storing core user data and relationships because it's reliable, scalable, and supports complex queries.
Meta database engineer use a custom MySQL storage engine called MyRocks to improve performance and storage efficiency.
MyRocks is optimized for write-heavy workloads, storage efficiency, large datasets, and workloads with random I/O.

TAO handles the relationships between users, posts, and pages efficiently, enabling fast retrieval of connected data.

For real-time analytics and logging, Meta uses Cassandra. Cassandra provides high availability and scalability across multiple data centers.

Finally, for large-scale data storage Meta employs HBase as their database of choice.
HBase is used for analytical purposes due to its ability to handle big data workloads.

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