5 Examples for libmemcached
12 For full examples, test cases are found in tests/\*.c in the main
13 distribution. These are always up to date, and are used for each test run of
16 -----------------------------------------------
17 Creating and Freeing the memcached_st structure
18 -----------------------------------------------
24 memcached_return_t rc;
26 memc= memcached_create(NULL);
31 The above code would create a connection and then free the connection when
43 const char *config_string= "--SERVER=host10.example.com --SERVER=host11.example.com --SERVER=host10.example.com"
44 memcached_st *memc= memcached_create_with_options(config_string, strlen(config_string);
51 In the above code you create a \ ``memcached_st``\ object with three server by making use of :manpage:`memcached_create_with_options(3)`.
54 --------------------------
55 Creating a pool of servers
56 --------------------------
62 const char *config_string= "--SERVER=host10.example.com --SERVER=host11.example.com --SERVER=host10.example.com";
64 memcached_pool_st* pool= memcached_pool(config_string, strlen(config_string));
66 memcached_return_t rc;
68 memcached_st *memc= memcached_pool_pop(pool, false, &rc);
73 Release the memc_ptr that was pulled from the pool
75 memcached_pool_push(pool, memc);
80 memcached_pool_destroy(pool);
84 In the above code you create a \ ``memcached_pool_st``\ object with three
85 server by making use of :manpage:`memcached_pool(3)`.
87 When memcached_pool_destroy() all memory will be released that is associated
91 ----------------------------
92 Adding a value to the server
93 ----------------------------
101 size_t value_length= 8191;
104 value = (char*)malloc(value_length);
107 for (x= 0; x < value_length; x++)
108 value[x] = (char) (x % 127);
110 for (x= 0; x < 1; x++)
112 rc= memcached_set(memc, key, strlen(key),
114 (time_t)0, (uint32_t)0);
115 assert(rc == MEMCACHED_SUCCESS);
121 It is best practice to always look at the return value of any operation.
124 ------------------------
125 Fetching multiple values
126 ------------------------
132 memcached_return_t rc;
133 char *keys[]= {"fudge", "son", "food"};
134 size_t key_length[]= {5, 3, 4};
138 char return_key[MEMCACHED_MAX_KEY];
139 size_t return_key_length;
141 size_t return_value_length;
143 rc= memcached_mget(memc, keys, key_length, 3);
146 while ((return_value= memcached_fetch(memc, return_key, &return_key_length,
147 &return_value_length, &flags, &rc)))
154 Notice that you freed values returned from memcached_fetch(). The define
155 \ ``MEMCACHED_MAX_KEY``\ is provided for usage.
164 To find out more information please check:
165 `https://launchpad.net/libmemcached <https://launchpad.net/libmemcached>`_
173 :manpage:`memcached(1)`