services.ncps.cache.lock.backend ‐ NixOS ‐ Searchix

services.ncps.cache.lock.backend

Lock backend to use: 'local' (single instance), 'redis' (distributed), 'postgres' (distributed, requires PostgreSQL).

Advisory Locks and Connection Pools: If you use PostgreSQL as your distributed lock backend, each active lock consumes a dedicated connection from the pool. A single request can consume up to 3 connections simultaneously.

To avoid deadlocks under concurrent load, ensure services.ncps.cache.database.pool.maxOpenConns is significantly higher than your expected concurrency (at least 50-100 is recommended).

Type

one of "local", "redis", "postgres"

Default

"local"

Declared