PGX runs isolated PostgreSQL databases inside a single Rust runtime, targeting short-lived agent, CI, and test environments. On-demand creation from a sealed template and copy-on-write on ZFS reduce the cost of branching; without block cloning, the system makes a full copy.
The project is at v0.1.0 and targets disposable databases, not production data: fsync is disabled, and one runtime is a single failure domain. Its benchmarks document their measurements and conditions; the PostgreSQL regression suite reports zero result differences in the stated configuration, without claiming general compatibility.
