A read replica is a continuously updated copy of a primary database that serves read-only queries, offloading reporting and read traffic from…
Redis is an in-memory key-value database system with rich data structures, used for caching, sessions, queues, rate limiting and real-time counters.
A relational database stores data in tables of rows and columns linked by keys and queried with SQL, enforcing integrity through constraints…
Replication lag is the delay between a change committing on a primary database and the same change becoming visible on a replica…
A rollback undoes every change made by a database transaction that has not committed, returning the data to the state it had…
Row-level security is a database security feature that filters which table rows each user can read or change, using policies enforced by…