CONFIGRead or change server configuration parameters.
| Syntax | CONFIG GET parameter | SET parameter value | REWRITE | RESETSTAT |
| Group | server |
| Arity | -2 |
| Since | 1.0.0 |
| Flags | write, admin |
| Complexity | GET: O(patterns * 16). SET: O(1) plus one config swap that shards pick up on their next tick. REWRITE: O(config file size) |
| Redis compatibility | differs: 16 Redis-named parameters exist; only maxmemory, maxmemory-policy, appendfsync, the auto-rewrite pair, hz, maxmemory-samples, loglevel and logfile are hot-settable — bind, port, io-threads, dir and appendonly error at runtime; RESETSTAT is a no-op |