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MEMCACHED_EXIST_BY_KEY(3)

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MEMCACHED_EXIST_BY_KEY(3)

NAME¶

memcached_exist_by_key - libmemcached Documentation

SYNOPSIS¶

#include <libmemcached/memcached.h>: Compile and link with -lmemcached

memcached_return_t memcached_exist(memcached_st *ptr, char *key, size_t *key_length)

memcached_return_t memcached_exist_by_key(memcached_st *ptr, char *group_key, size_t *group_key_length, char *key, size_t *key_length)

Parameters

ptr -- pointer to an initialized memcached_st struct
group_key -- the key namespace
group_key_length -- length of the group_key without any terminating zero
key -- the key to check
key_length -- length of the key without any terminating zero

Returns: memcached_return_t indicating success

New in version 0.53.

DESCRIPTION¶

memcached_exist() can be used to check if a key exists.

RETURN VALUE¶

MEMCACHED_SUCCESS: The key exists.
MEMCACHED_NOTFOUND: The key was not found.

SEE ALSO¶

memcached(1) libmemcached(3) memcached_strerror(3)

November 12, 2021

1.1