libmemcached_examples - Examples for libmemcached
For full examples, test cases are found in tests/*.c in the main distribution. These are always up to date, and are used for each test run of the library.
memcached_st *memc; memcached_return rc; memc= memcached_create(NULL); ...do stuff... memcached_free(memc);
The above code would create a connection and then free the connection when finished.
memcached_server_st *servers; memcached_st *memc= memcached_create(NULL); char servername[]= "0.example.com"; servers= memcached_server_list_append(NULL, servername, 400, &rc); for (x= 0; x < 20; x++) { char buffer[SMALL_STRING_LEN]; snprintf(buffer, SMALL_STRING_LEN, "%u.example.com", 400+x); servers= memcached_server_list_append(servers, buffer, 401, &rc); } rc= memcached_server_push(memc, servers); memcached_server_free(servers); memcached_free(memc);
In the above code you create a memcached_st object that you then feed in a single host into. In the for loop you build a memcached_server_st pointer that you then later feed via memcached_server_push() into the memcached_st structure.
memcached_st
memcached_server_st
You can reuse the memcached_server_st object with multile memcached_st structures.
char *key= "foo"; char *value; size_t value_length= 8191; unsigned int x; value = (char*)malloc(value_length); assert(value); for (x= 0; x < value_length; x++) value[x] = (char) (x % 127); for (x= 0; x < 1; x++) { rc= memcached_set(memc, key, strlen(key), value, value_length, (time_t)0, (uint32_t)0); assert(rc == MEMCACHED_SUCCESS); } free(value);
It is best practice to always look at the return value of any operation.
memcached_return rc; char *keys[]= {"fudge", "son", "food"}; size_t key_length[]= {5, 3, 4}; unsigned int x; uint32_t flags; char return_key[MEMCACHED_MAX_KEY]; size_t return_key_length; char *return_value; size_t return_value_length; rc= memcached_mget(memc, keys, key_length, 3); x= 0; while ((return_value= memcached_fetch(memc, return_key, &return_key_length, &return_value_length, &flags, &rc))) { free(return_value); x++; }
Notice that you freed values returned from memcached_fetch(). The define MEMCACHED_MAX_KEY is provided for usage.
MEMCACHED_MAX_KEY
To find out more information please check: http://tangent.org/552/libmemcached.html
Brian Aker, <brian@tangent.org>
memcached(1)
To install Memcached::libmemcached, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Memcached::libmemcached
CPAN shell
perl -MCPAN -e shell install Memcached::libmemcached
For more information on module installation, please visit the detailed CPAN module installation guide.