memcached_touch3
Libmemcached documentation
Usage
- #include <libmemcached/memcached.h>
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Compile and link with -lmemcached
- memcached_return_t <#_CPPv418memcached_return_t> memcached_touch(memcached_st <#_CPPv412memcached_st> *ptr, const char *key, size_t key_length, time_t expiration)
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Parameters-
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ptr-- pointer to initializedmemcached_st<#_CPPv412memcached_st> struct
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key-- the key to touch
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key_length-- the length ofkeywithout any terminating zero
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expiration-- new expiration as a unix timestamp or as relative expiration time in seconds
Returns-
memcached_return_t<#_CPPv418memcached_return_t> indicating success
- memcached_return_t <#_CPPv418memcached_return_t> memcached_touch_by_key(memcached_st <#_CPPv412memcached_st> *ptr, const char *group_key, size_t group_key_length, const char *key, size_t key_length, time_t expiration)
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Parameters-
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ptr-- pointer to initializedmemcached_st<#_CPPv412memcached_st> struct
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group_key-- thekeynamespace
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group_key_length-- the length ofgroup_keywithout any terminating zero
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key-- the key to touch
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key_length-- the length ofkeywithout any terminating zero
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expiration-- new expiration as a unix timestamp or as relative expiration time in seconds
Returns-
memcached_return_t<#_CPPv418memcached_return_t> indicating success
Overview
memcached_touch() is used to update the expiration time on an existing key. memcached_touch_by_key() works the same, but it takes a master key to find the given value.
Return value
A value of type memcached_return_t <#_CPPv418memcached_return_t> is returned. On success that value will be MEMCACHED_SUCCESS <#_CPPv4N18memcached_return_t17MEMCACHED_SUCCESSE>. Use memcached_strerror() <#_CPPv418memcached_strerrorP12memcached_st18memcached_return_t> to translate this value to a printable string.
Releases
8 releases since Debian 7 (Wheezy); the text changed 4 times.