What Is Z-Heap (Experimental)?
Z-Heap is a new storage engine proposed for PostgreSQL to reduce bloat and improve update performance. It avoids the traditional MVCC tuple layering model. As of now, it's still in development and not production-ready.
Why It Matters for PostgreSQL Performance
In PostgreSQL performance work, Z-Heap (Experimental) affects throughput, latency, or operational reliability depending on workload and configuration.
Practical Benchmarking Context
When benchmarking with pgbench, track how Z-Heap (Experimental) 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
Status: Experimental community project.