libmemcached_examples(3) [debian man page]

LIBMEMCACHED_EXAMPLES(3)					   libmemcached 					  LIBMEMCACHED_EXAMPLES(3)

NAME

       libmemcached_examples - libmemcached Documentation

       Examples for libmemcached

DESCRIPTION

       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.

CONNECTING TO SERVERS

       const char *config_string= "--SERVER=host10.example.com --SERVER=host11.example.com --SERVER=host10.example.com"
       memcached_st *memc= memcached(config_string, strlen(config_string);
       {
       ...
       }
	memcached_free(memc);

       In the above code you create a memcached_st object with three server by making use of memcached_create().

CREATING A POOL OF SERVERS

       Creating a pool of Servers:

       const char *config_string= "--SERVER=host10.example.com --SERVER=host11.example.com --SERVER=host10.example.com";

       memcached_pool_st* pool= memcached_pool(config_string, strlen(config_string));

       memcached_return_t rc;

       memcached_st *memc= memcached_pool_pop(pool, false, &rc);

       .... do work

       /*
	 Release the memc_ptr that was pulled from the pool
       */
       memcached_pool_push(pool, memc);

       /*
	 Destroy the pool.
       */
       memcached_pool_destroy(pool);

       In the above code you create a memcached_pool_st object with three server by making use of memcached_pool().

       When memcached_pool_destroy() all memory will be released that is associated with the pool.

ADDING A VALUE TO THE SERVER

       Adding a value to the Server:

       char *key= "foo";
       char *value= "value";

       memcached_return_t rc= memcached_set(memc, key, strlen(key), value, value_length, (time_t)0, (uint32_t)0);

       if (rc != MEMCACHED_SUCCESS)
       {
       ... // handle failure
       }

       It is best practice to always look at the return value of any operation.

FETCHING MULTIPLE VALUES

       memcached_return_t 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.

HOME

       To find out more information please check: http://libmemcached.org/

SEE ALSO

       memcached(1)

AUTHOR

       Brian Aker

COPYRIGHT

       2011, Brian Aker DataDifferential, http://datadifferential.com/

1.0.8								   May 22, 2012 					  LIBMEMCACHED_EXAMPLES(3)

MEMCACHED_POOL_DESTROY(3)					   libmemcached 					 MEMCACHED_POOL_DESTROY(3)

NAME

       memcached_pool_destroy - libmemcached Documentation

SYNOPSIS

       #include <libmemcached/memcached_pool.h>

       memcached_pool_st

       memcached_pool_st* memcached_pool(const char *option_string, size_t option_string_length)

       memcached_pool_st* memcached_pool_create(memcached_st* mmc, int initial, int max)

       Deprecated since version 0.46: Use memcached_pool()

       memcached_st* memcached_pool_destroy(memcached_pool_st* pool)

       memcached_st* memcached_pool_pop(memcached_pool_st* pool, bool block, memcached_return_t *rc)

       Deprecated since version 0.53: Use memcached_pool_fetch()

       memcached_st* memcached_pool_fetch(memcached_pool_st*, struct timespec* relative_time, memcached_return_t* rc)

       New in version 0.53: Synonym for memcached_pool_pop

       memcached_return_t memcached_pool_push(memcached_pool_st* pool, memcached_st *mmc)

       Deprecated since version 0.53: Use memcached_pool_push()

       memcached_return_t memcached_pool_release(memcached_pool_st* pool, memcached_st* mmc)

       New in version 0.53: Synonym for memcached_pool_push.

       memcached_return_t memcached_pool_behavior_set(memcached_pool_st *pool, memcached_behavior_t flag, uint64_t data)

       memcached_return_t memcached_pool_behavior_get(memcached_pool_st *pool, memcached_behavior_t flag, uint64_t *value)

       Compile and link with -lmemcachedutil -lmemcached

DESCRIPTION

       memcached_pool() is used to create a connection pool of objects you may use to remove the overhead of using memcached_clone for short lived
       memcached_st objects. Please see libmemcached_configuration for details on the format of the configuration string.

       memcached_pool_destroy() is used to destroy the connection pool created with memcached_pool_create() and release all  allocated	resources.
       It will return the pointer to the memcached_st structure passed as an argument to memcached_pool_create(), and returns the ownership of the
       pointer to the caller when created with memcached_pool_create(), otherwise NULL is returned..

       memcached_pool_fetch() is used to fetch a connection structure from the connection pool. The relative_time argument specifies if the  func-
       tion  should  block  and  wait for a connection structure to be available if we try to exceed the maximum size. You need to specify time in
       relative time.

       memcached_pool_release() is used to return a connection structure back to the pool.

       memcached_pool_behavior_get() and memcached_pool_behavior_set() is used to get/set behavior flags on all connections in the pool.

       Both memcached_pool_release() and memcached_pool_fetch() are thread safe.

RETURN

       memcached_pool_destroy() returns the pointer (and ownership) to the memcached_st structure used to create the pool. If connections  are	in
       use it returns NULL.

       memcached_pool_pop() returns a pointer to a memcached_st structure from the pool (or NULL if an allocation cannot be satisfied).

       memcached_pool_release() returns MEMCACHED_SUCCESS upon success.

       memcached_pool_behavior_get() and memcached_pool_behavior_get() returns MEMCACHED_SUCCESS upon success.

       If any methods returns MEMCACHED_IN_PROGRESS then a lock on the pool could not be obtained. If any of the parameters passed to any of these
       functions is invalid, MEMCACHED_INVALID_ARGUMENTS will be returned.

       memcached_pool_fetch may return MEMCACHED_TIMEOUT if a timeout occurs while waiting for a free memcached_st. MEMCACHED_NOTFOUND if no  mem-
       cached_st was available.

HOME

       To find out more information please check: http://libmemcached.org/

AUTHOR

       Brian Aker, <brian@tangent.org>

       Trond Norbye, <trond.norbye@gmail.com>

SEE ALSO

       memcached(1) libmemcached(3) memcached_strerror(3) libmemcached_configuration(3)

AUTHOR

       Brian Aker

COPYRIGHT

       2011, Brian Aker DataDifferential, http://datadifferential.com/

1.0.8								   May 22, 2012 					 MEMCACHED_POOL_DESTROY(3)