YugabyteDB provides a PostgreSQL-compatible YSQL API while distributing data across a cluster. PostgreSQL knowledge transfers well, but administrators also need to understand distributed placement and replication.
YSQL and tablets
Applications connect through YSQL, while data is distributed into tablets across tablet servers. Hash and range sharding determine how rows are placed.
Replication factor
An RF=3 cluster typically maintains three replicas for resilience. Raft groups coordinate replication and leader election.
DBA transition
Start with familiar SQL administration, then add node operations, placement policies, backups, xCluster replication, observability and distributed troubleshooting.