How to Prevent Lost Updates: Atomic Writes, Explicit Locks, and CAS

The article explains why concurrent write transactions cause lost updates, then details practical solutions such as atomic update statements, explicit row‑level locking, automatic lost‑update detection, compare‑and‑swap (CAS) techniques, and special considerations for multi‑replica databases.

CASConcurrency Controlatomic write

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How to Prevent Lost Updates: Atomic Writes, Explicit Locks, and CAS