CODEWITHSUNDEEP
phpredis
Raj Garu
Raj Garu

Reputation: 79

How can i store the result of SRANDMEMBER with a COUNT argument in a SET?

I an using phpredis and i have something like below: $qrand = $redis->sRandMember('qall',25); Is there a simple way of storing the resulting array in a SET other than looping and adding to the set?

Upvotes: 1

Views: 91

Answers (1)

Itamar Haber
Itamar Haber

Reputation: 50102

You can compose a Lua script that does that for you. Something like the following should work:

 EVAL "redis.replicate_commands() redis.call('SADD',KEYS[2],unpack(redis.call('SRANDMEMBER', KEYS[1],ARGV[1]))" 2 qall tmp 25

Note: this works only with Redis v3.2 and above due to randomness.

Upvotes: 1

Related Questions