What Is ACID?
ACID ensures reliable processing of database transactions through Atomicity, Consistency, Isolation, and Durability. PostgreSQL adheres strictly to ACID compliance for high data integrity.
Why It Matters for PostgreSQL Performance
In PostgreSQL performance work, ACID affects throughput, latency, or operational reliability depending on workload and configuration.
Practical Benchmarking Context
When benchmarking with pgbench, track how ACID changes behavior across scale factor, client concurrency, and storage conditions.
Use this term together with workload shape, concurrency level, and scale factor when interpreting pgbench outputs. Isolated values can be misleading without full run context.
Example
Example: Bank transfers use ACID to guarantee both debit and credit succeed or fail together.