6 Examples for libmemcached
14 For full examples, test cases are found in tests/\*.c in the main
15 distribution. These are always up to date, and are used for each test run of
18 ------------------------------
19 Creating and Freeing structure
20 ------------------------------
26 memcached_return_t rc;
28 memc= memcached_create(NULL);
33 The above code would create a connection and then free the connection when
45 memcached_server_st *servers;
46 memcached_st *memc= memcached_create(NULL);
47 char servername[]= "0.example.com";
49 servers= memcached_server_list_append(NULL, servername, 400, &rc);
51 for (x= 0; x < 20; x++)
53 char buffer[SMALL_STRING_LEN];
55 snprintf(buffer, SMALL_STRING_LEN, "%u.example.com", 400+x);
56 servers= memcached_server_list_append(servers, buffer, 401, &rc);
58 rc= memcached_server_push(memc, servers);
59 memcached_server_free(servers);
63 In the above code you create a \ ``memcached_st``\ object that you then feed in a
64 single host into. In the for loop you build a \ ``memcached_server_st``\
65 pointer that you then later feed via memcached_server_push() into the
66 \ ``memcached_st``\ structure.
68 You can reuse the \ ``memcached_server_st``\ object with multile \ ``memcached_st``\
72 ----------------------------
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 ------------------------
106 Fetching multiple values
107 ------------------------
113 memcached_return_t rc;
114 char *keys[]= {"fudge", "son", "food"};
115 size_t key_length[]= {5, 3, 4};
119 char return_key[MEMCACHED_MAX_KEY];
120 size_t return_key_length;
122 size_t return_value_length;
124 rc= memcached_mget(memc, keys, key_length, 3);
127 while ((return_value= memcached_fetch(memc, return_key, &return_key_length,
128 &return_value_length, &flags, &rc)))
135 Notice that you freed values returned from memcached_fetch(). The define
136 \ ``MEMCACHED_MAX_KEY``\ is provided for usage.
145 To find out more information please check:
146 `https://launchpad.net/libmemcached <https://launchpad.net/libmemcached>`_
154 :manpage:`memcached(1)`