HMSET under v4 doesn't work. HSET does

[BarryCarlyon]

HMSET does not seem to be supported

I have to resort to sendcommand instead?

                redis_client.HMSET(
                    'test_key',
                    'some_key',
                    'some_value',
                    'another_key',
                    'another_value'
                )
                .then(r => {
                    console.log(r);
                })
                .catch(e => {
                    console.error(e);
                });

and

                let r = await redis_client.HMSET(
                    'test_key',
                    'some_key',
                    'some_value',
                    'another_key',
                    'another_value'
                )

Results in

                redis_client.HMSET(
                             ^

TypeError: redis_client.HMSET is not a function

Additionally, after

127.0.0.1:6379> hset test_key some_key a another_key thing

HMGET can't get multiple keys?

                let ra = await redis_client.HMGET(
                    'test_key',
                    'some_key',
                    'some_value',
                    'another_key',
                    'another_value'
                )
                console.log(ra);

results in

[ 'a' ]

Or is this a case of "node redis doesn't know about this yet" but it did in the last v3 version?

Environment:

• Node.js Version: v16.9.0
• Redis Server Version: v=6.2.6 sha=00000000:0 malloc=libc bits=64 build=c6f3693d1aced7
• Node Redis Version: redis@4.0.0
• Platform: Mac 12.0.1

[leibale]

HMSET is deprecated since redis 4.0.0, you can use HSET to set multiple fields as well:

// with an object
client.HSET('key', {
  field1: 'value1',
  field2: 'value2'
});

// with flat array
client.HSET('key', ['field1', 'value1', 'field2', 'value2']);

// with tuples
client.HSET('key', [['field1', 'value1'], ['field2', 'value2']]);

for MGET, instead of passing the field names as multiple arguments, pass them as an array:

client.HMGET('key', ['field1', 'field2']);

[BarryCarlyon]

This might be the sort of thing to include/add to the migration guide perhaps?

[djaffer]

It is due to commands becoming camel case and if you were using a lower case like hset then you would hit this issue. Not the best way of releasing a new release. I was stuck on this too.
#1760

[madprops]

you can use HSET to set multiple fields as well

Why then use the example with HMSET, this confused me.

[Scorpiour]

HMSET is deprecated since redis 4.0.0, you can use HSET to set multiple fields as well:

// with an object
client.HSET('key', {
  field1: 'value1',
  field2: 'value2'
});

// with flat array
client.HSET('key', ['field1', 'value1', 'field2', 'value2']);

// with tuples
client.HSET('key', [['field1', 'value1'], ['field2', 'value2']]);

for MGET, instead of passing the field names as multiple arguments, pass them as an array:

client.HMGET('key', ['field1', 'field2']);

Your example doesn't work on 4.6.11, while there is an error of [ErrorReply: ERR wrong number of arguments for 'hset' command]