MEMCACHED_EXIST_BY_KEY(3) libmemcached-awesome MEMCACHED_EXIST_BY_KEY(3) NAME memcached_exist_by_key - libmemcached Documentation SYNOPSIS #include 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 o ptr -- pointer to an initialized memcached_st struct o group_key -- the key namespace o group_key_length -- length of the group_key without any terminating zero o key -- the key to check o key_length -- length of the key without any terminating zero Returns memcached_return_t indicating success Added 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) 1.1 May 1, 2024 MEMCACHED_EXIST_BY_KEY(3)