Is `incr()` supposed to update expiry time?

[stv8]

I've noticed that calling incr() with an an expiry such as

memcachedClient.incr("derp", 1, 1, 5000, 30)

will set an initial expiry, but subsequent calls to incr() with an expiry will not update the expiry and the key expires according to the initial expiry. I followed the execution flow in my debugger and found that the expiry is being sent every time, but maybe I am misunderstanding if memcached even supports updating an expiry.

With that said, is not updating expiry with subsequent calls intended behavior or a bug?

Thanks!

References: http://fnil.net/docs/xmemcached/net/rubyeye/xmemcached/MemcachedClient.html#incr(java.lang.String,%20long,%20long,%20long,%20int)

long incr(String key,
        long delta,
        long initValue,
        long timeout,
        int exp)
          throws TimeoutException,
                 InterruptedException,
                 MemcachedException

[killme2008]

Memcached doesn't support updating expiry with subsequent calls. You can use touch(key, expires) instead.

[stv8]

Thanks for the follow up!