1 .TH "LIBMEMCACHED_EXAMPLES" "3" "April 09, 2011" "0.47" "libmemcached"
3 libmemcached_examples \- libmemcached Documentation
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34 Examples for libmemcached
37 For full examples, test cases are found in tests/*.c in the main
38 distribution. These are always up to date, and are used for each test run of
40 .SH CREATING AND FREEING STRUCTURE
45 memcached_return_t rc;
47 memc= memcached_create(NULL);
53 The above code would create a connection and then free the connection when
55 .SH CONNECTING TO SERVERS
59 memcached_server_st *servers;
60 memcached_st *memc= memcached_create(NULL);
61 char servername[]= "0.example.com";
63 servers= memcached_server_list_append(NULL, servername, 400, &rc);
65 for (x= 0; x < 20; x++)
67 char buffer[SMALL_STRING_LEN];
69 snprintf(buffer, SMALL_STRING_LEN, "%u.example.com", 400+x);
70 servers= memcached_server_list_append(servers, buffer, 401, &rc);
72 rc= memcached_server_push(memc, servers);
73 memcached_server_free(servers);
78 In the above code you create a \fBmemcached_st\fP object that you then feed in a
79 single host into. In the for loop you build a \fBmemcached_server_st\fPpointer that you then later feed via memcached_server_push() into the
80 \fBmemcached_st\fP structure.
82 You can reuse the \fBmemcached_server_st\fP object with multile \fBmemcached_st\fPstructures.
83 .SH ADDING A VALUE TO THE SERVER
89 size_t value_length= 8191;
92 value = (char*)malloc(value_length);
95 for (x= 0; x < value_length; x++)
96 value[x] = (char) (x % 127);
98 for (x= 0; x < 1; x++)
100 rc= memcached_set(memc, key, strlen(key),
102 (time_t)0, (uint32_t)0);
103 assert(rc == MEMCACHED_SUCCESS);
110 It is best practice to always look at the return value of any operation.
111 .SH FETCHING MULTIPLE VALUES
115 memcached_return_t rc;
116 char *keys[]= {"fudge", "son", "food"};
117 size_t key_length[]= {5, 3, 4};
121 char return_key[MEMCACHED_MAX_KEY];
122 size_t return_key_length;
124 size_t return_value_length;
126 rc= memcached_mget(memc, keys, key_length, 3);
129 while ((return_value= memcached_fetch(memc, return_key, &return_key_length,
130 &return_value_length, &flags, &rc)))
138 Notice that you freed values returned from memcached_fetch(). The define
139 \fBMEMCACHED_MAX_KEY\fP is provided for usage.
142 To find out more information please check:
143 \fI\%https://launchpad.net/libmemcached\fP
150 2011, Brian Aker DataDifferential, http://datadifferential.com/
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