Iterates over fields and values of a hash.
HSCAN key cursor
[MATCH pattern]
[COUNT count]
[NOVALUES]
See SCAN for HSCAN
documentation.
Array reply: a two-element array.
The first element is a Bulk string reply that represents an unsigned 64-bit number, the cursor.
The second element is an Array reply of field/value
pairs that were scanned. When NOVALUES option is on, a list
of keys from the hash.
O(1) for every call. O(N) for a complete iteration, including enough command calls for the cursor to return back to 0. N is the number of elements inside the collection.
@hash @read @slow
HDEL, HEXISTS, HEXPIRE, HEXPIREAT, HEXPIRETIME, HGET, HGETALL, HGETDEL, HGETEX, HINCRBY, HINCRBYFLOAT, HKEYS, HLEN, HMGET, HMSET, HPERSIST, HPEXPIRE, HPEXPIREAT, HPEXPIRETIME, HPTTL, HRANDFIELD, HSET, HSETEX, HSETNX, HSTRLEN, HTTL, HVALS.