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# Redis `hash` commands (25/27 implemented)
## [HDEL](https://redis.io/commands/hdel/)
Deletes one or more fields and their values from a hash. Deletes the hash if no fields remain.
## [HEXISTS](https://redis.io/commands/hexists/)
Determines whether a field exists in a hash.
## [HEXPIRE](https://redis.io/commands/hexpire/)
Set expiry for hash field using relative time to expire (seconds)
## [HEXPIREAT](https://redis.io/commands/hexpireat/)
Set expiry for hash field using an absolute Unix timestamp (seconds)
## [HEXPIRETIME](https://redis.io/commands/hexpiretime/)
Returns the expiration time of a hash field as a Unix timestamp, in seconds.
## [HGET](https://redis.io/commands/hget/)
Returns the value of a field in a hash.
## [HGETALL](https://redis.io/commands/hgetall/)
Returns all fields and values in a hash.
## [HINCRBY](https://redis.io/commands/hincrby/)
Increments the integer value of a field in a hash by a number. Uses 0 as initial value if the field doesn't exist.
## [HINCRBYFLOAT](https://redis.io/commands/hincrbyfloat/)
Increments the floating point value of a field by a number. Uses 0 as initial value if the field doesn't exist.
## [HKEYS](https://redis.io/commands/hkeys/)
Returns all fields in a hash.
## [HLEN](https://redis.io/commands/hlen/)
Returns the number of fields in a hash.
## [HMGET](https://redis.io/commands/hmget/)
Returns the values of all fields in a hash.
## [HMSET](https://redis.io/commands/hmset/)
Sets the values of multiple fields.
## [HPERSIST](https://redis.io/commands/hpersist/)
Removes the expiration time for each specified field
## [HPEXPIRE](https://redis.io/commands/hpexpire/)
Set expiry for hash field using relative time to expire (milliseconds)
## [HPEXPIREAT](https://redis.io/commands/hpexpireat/)
Set expiry for hash field using an absolute Unix timestamp (milliseconds)
## [HPEXPIRETIME](https://redis.io/commands/hpexpiretime/)
Returns the expiration time of a hash field as a Unix timestamp, in msec.
## [HPTTL](https://redis.io/commands/hpttl/)
Returns the TTL in milliseconds of a hash field.
## [HRANDFIELD](https://redis.io/commands/hrandfield/)
Returns one or more random fields from a hash.
## [HSCAN](https://redis.io/commands/hscan/)
Iterates over fields and values of a hash.
## [HSET](https://redis.io/commands/hset/)
Creates or modifies the value of a field in a hash.
## [HSETNX](https://redis.io/commands/hsetnx/)
Sets the value of a field in a hash only when the field doesn't exist.
## [HSTRLEN](https://redis.io/commands/hstrlen/)
Returns the length of the value of a field.
## [HTTL](https://redis.io/commands/httl/)
Returns the TTL in seconds of a hash field.
## [HVALS](https://redis.io/commands/hvals/)
Returns all values in a hash.
## Unsupported hash commands
> To implement support for a command, see [here](/guides/implement-command/)
#### [HGETF](https://redis.io/commands/hgetf/) <small>(not implemented)</small>
For each specified field, returns its value and optionally set the field's remaining expiration time in seconds / milliseconds
#### [HSETF](https://redis.io/commands/hsetf/) <small>(not implemented)</small>
For each specified field, returns its value and optionally set the field's remaining expiration time in seconds / milliseconds
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