INCR and EXPIRE at the same time in Redis?

[poiuytrez]

Hello, 

Is there a way to have an equivalent of SETEX for INCR? I would like to increment a value and set an expiration date at the same time. 

Thank you for your help,

poiuytrez

[Jan-Erik Rediger]

MULTI
INCR yourkey
EXPIRE yourkey 100
EXEC

On Thu, Feb 25, 2016 at 08:53:47AM -0800, poiuytrez wrote:
> Hello,
>
> Is there a way to have an equivalent of SETEX

> <http://redis.io/commands/setex> for INCR? I would like to increment a

> value and set an expiration date at the same time.
>
> Thank you for your help,
> poiuytrez
>

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[Itamar Haber]

Or with Lua:

EVAL "redis.call('EXPIRE', KEYS[1], ARGV[1]) return redis.call('INCR', KEYS[1])" 1 yourkey 100

[Marc Gravell]

Minor point on the Lua example: "incr, expire" may give a slightly different result to "expire, incr" - in the case where the key does not currently exist. I would recommend "incr, expire", but this may require storing the value in a local (presumably it is incr that you want the reply of)

[Itamar Haber]

Thanks Mark, good point. v2.0:

EVAL "local r = redis.call('INCR', KEYS[1]) redis.call('EXPIRE', KEYS[1], ARGV[1]) return r" 1 yourkey 100

Itamar Haber | Chief Developer Advocate
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