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NCACHE.FLUSH

Last updated 
NCACHE.FLUSH namespace
Group
Keyed caches
Complexity
O(N) where N is the number of entries
Arity
2 (exactly, counting the command name)
Flags
write
Keys
first 1, last 1, step 1
HotKV Cloud
Performance and Scale
On-Premise
requires the negative-cache license feature

The negative cache holds negative results, such as “user not found” or “refused by moderation”, usually with a short TTL, so repeated lookups for the same missing or refused item do not reach your backend or model again. NCACHE.FLUSH empties a namespace. The namespace keeps its settings, so you can store new entries straight away. To remove the namespace itself, use NCACHE.DROP.

Return value

Section titled “Return value”
Case RESP2 RESP3
Always Integer: the number of entries removed (0 for an unknown namespace) Same

Errors:

  • ERR wrong number of arguments for 'ncache.flush' command if the argument count is wrong.
  • NOLICENSE negative-cache requires a HotKV license. Contact sales@hotkv.com if your license does not include the negative-cache feature.

Examples

Section titled “Examples”
127.0.0.1:6379> NCACHE.FLUSH lookups
(integer) 2
127.0.0.1:6379> NCACHE.FLUSH lookups
(integer) 0

Compatibility

Section titled “Compatibility”

HotKV-only command. Redis and Valkey have no equivalent.

See also

Section titled “See also”

NCACHE.CREATE, NCACHE.SET, NCACHE.GET, NCACHE.DEL, NCACHE.STATS, NCACHE.DROP, NCACHE.LIST, AI features guide