HPTTL
Return per-field remaining TTLs in milliseconds (-1 no TTL, -2 missing).
HPTTL key FIELDS numfields field [field ...]
Complexity
O(F) fields
Complexity and compatibility are read out of kevy's implementation, not copied from Redis's reference. Several genuinely differ.
Redis compatibility
Differs
silently accepts a stray NX|XX|GT|LT token before FIELDS where Redis rejects it
See also
HDELHEXISTSHEXPIREHGETHGETALLHINCRBYHKEYSHLENHMGETHMSETHPERSISTHPEXPIREHPEXPIREATHSCANHSETHSETNXHTTLHVALS