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===========================================
memcached_touch, memcached_touch_by_key
===========================================
.. index:: object: memcached_st
--------
SYNOPSIS
--------
#include <libmemcached/memcached.h>
.. c:function:: memcached_return_t memcached_touch (memcached_st *ptr, const char *key, size_t key_length, time_t expiration)
.. c:function:: memcached_return_t memcached_touch_by_key (memcached_st *ptr, const char *group_key, size_t group_key_length, const char *key, size_t key_length, time_t expiration)
Compile and link with -lmemcached
-----------
DESCRIPTION
-----------
:c:func:`memcached_touch` is used to update the expiration time on an existing key.
:c:func:`memcached_touch_by_key` works the same, but it takes a master key
to find the given value.
------
RETURN
------
A value of type :c:type:`memcached_return_t` is returned
On success that value will be :c:type:`MEMCACHED_SUCCESS`.
Use :c:func:`memcached_strerror` to translate this value to a printable
string.
----
HOME
----
To find out more information please check:
`http://libmemcached.org/ <http://libmemcached.org/>`_
------
AUTHOR
------
Brian Aker, <brian@tangent.org>
--------
SEE ALSO
--------
:manpage:`memcached(1)` :manpage:`libmemcached(3)` :manpage:`memcached_strerror(3)`
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