8 Examples for libmemcached
16 For full examples, test cases are found in tests/\*.c in the main
17 distribution. These are always up to date, and are used for each test run of
20 Creating and Freeing structure
21 ==============================
28 memcached_return_t rc;
30 memc= memcached_create(NULL);
35 The above code would create a connection and then free the connection when
46 memcached_server_st *servers;
47 memcached_st *memc= memcached_create(NULL);
48 char servername[]= "0.example.com";
50 servers= memcached_server_list_append(NULL, servername, 400, &rc);
52 for (x= 0; x < 20; x++)
54 char buffer[SMALL_STRING_LEN];
56 snprintf(buffer, SMALL_STRING_LEN, "%u.example.com", 400+x);
57 servers= memcached_server_list_append(servers, buffer, 401, &rc);
59 rc= memcached_server_push(memc, servers);
60 memcached_server_free(servers);
64 In the above code you create a \ ``memcached_st``\ object that you then feed in a
65 single host into. In the for loop you build a \ ``memcached_server_st``\
66 pointer that you then later feed via memcached_server_push() into the
67 \ ``memcached_st``\ structure.
69 You can reuse the \ ``memcached_server_st``\ object with multile \ ``memcached_st``\
73 Adding a value to the server
74 ============================
82 size_t value_length= 8191;
85 value = (char*)malloc(value_length);
88 for (x= 0; x < value_length; x++)
89 value[x] = (char) (x % 127);
91 for (x= 0; x < 1; x++)
93 rc= memcached_set(memc, key, strlen(key),
95 (time_t)0, (uint32_t)0);
96 assert(rc == MEMCACHED_SUCCESS);
102 It is best practice to always look at the return value of any operation.
105 Fetching multiple values
106 ========================
112 memcached_return_t rc;
113 char *keys[]= {"fudge", "son", "food"};
114 size_t key_length[]= {5, 3, 4};
118 char return_key[MEMCACHED_MAX_KEY];
119 size_t return_key_length;
121 size_t return_value_length;
123 rc= memcached_mget(memc, keys, key_length, 3);
126 while ((return_value= memcached_fetch(memc, return_key, &return_key_length,
127 &return_value_length, &flags, &rc)))
134 Notice that you freed values returned from memcached_fetch(). The define
135 \ ``MEMCACHED_MAX_KEY``\ is provided for usage.
144 To find out more information please check:
145 `https://launchpad.net/libmemcached <https://launchpad.net/libmemcached>`_
153 Brian Aker, <brian@tangent.org>