libmemcached
-libmemcachedutil
-libhashkit
Client Applications
-#include <libmemcached/memcached.h>
+memcached_fetch_result(memcached_st *ptr, memcached_result_st *result, memcached_return_t *error)¶memcached_fetch_result(memcached_st *ptr, memcached_result_st *result, memcached_return_t *error)¶memcached_get(memcached_st *ptr, const char *key, size_t key_length, size_t *value_length, uint32_t *flags, memcached_return_t *error)¶memcached_get(memcached_st *ptr, const char *key, size_t key_length, size_t *value_length, uint32_t *flags, memcached_return_t *error)¶memcached_mget(memcached_st *ptr, const char *const *keys, const size_t *key_length, size_t number_of_keys)¶memcached_mget(memcached_st *ptr, const char *const *keys, const size_t *key_length, size_t number_of_keys)¶memcached_get_by_key(memcached_st *ptr, const char *group_key, size_t group_key_length, const char *key, size_t key_length, size_t *value_length, uint32_t *flags, memcached_return_t *error)¶memcached_get_by_key(memcached_st *ptr, const char *group_key, size_t group_key_length, const char *key, size_t key_length, size_t *value_length, uint32_t *flags, memcached_return_t *error)¶memcached_mget_by_key(memcached_st *ptr, const char *group_key, size_t group_key_length, const char *const *keys, const size_t *key_length, size_t number_of_keys)¶memcached_mget_by_key(memcached_st *ptr, const char *group_key, size_t group_key_length, const char *const *keys, const size_t *key_length, size_t number_of_keys)¶memcached_fetch_execute(memcached_st *ptr, memcached_execute_fn *callback, void *context, uint32_t number_of_callbacks)¶memcached_fetch_execute(memcached_st *ptr, memcached_execute_fn *callback, void *context, uint32_t number_of_callbacks)¶memcached_mget_execute(memcached_st *ptr, const char *const *keys, const size_t *key_length, size_t number_of_keys, memcached_execute_fn *callback, void *context, uint32_t number_of_callbacks)¶memcached_mget_execute(memcached_st *ptr, const char *const *keys, const size_t *key_length, size_t number_of_keys, memcached_execute_fn *callback, void *context, uint32_t number_of_callbacks)¶memcached_mget_execute_by_key(memcached_st *ptr, const char *group_key, size_t group_key_length, const char *const *keys, const size_t *key_length, size_t number_of_keys, memcached_execute_fn *callback, void *context, uint32_t number_of_callbacks)¶memcached_mget_execute_by_key(memcached_st *ptr, const char *group_key, size_t group_key_length, const char *const *keys, const size_t *key_length, size_t number_of_keys, memcached_execute_fn *callback, void *context, uint32_t number_of_callbacks)¶memcached_execute_fn)(const memcached_st *ptr, memcached_result_st *result, void *context)¶memcached_execute_fn)(const memcached_st *ptr, memcached_result_st *result, void *context)¶Compile and link with -lmemcached
memcached_get() is used to fetch an individual value from the server.
You must pass in a key and its length to fetch the object. You must supply
three pointer variables which will give you the state of the returned
-object. A uint32_t pointer to contain whatever flags you stored with the value, a size_t pointer which will be filled with size of of
+object. A uint32_t pointer to contain whatever flags you stored
+with the value, a size_t pointer which will be filled with size of of
the object, and a memcached_return_t pointer to hold any error. The
object will be returned upon success and NULL will be returned on failure. Any
object returned by memcached_get() must be released by the caller
application.
memcached_mget() is used to select multiple keys at once. For
-multiple key operations it is always faster to use this function. This function always works asynchronously.
To retrieve data after a successful execution of memcached_mget(), you will need to
-call memcached_fetch_result(). You should continue to call this function until
-it returns a NULL (i.e. no more values). If you need to quit in the middle of a
-memcached_mget() call, you can execute a memcached_quit(), those this is not required.
memcached_fetch_result() is used to fetch an individual value from the server. memcached_mget() must always be called before using this method.
+multiple key operations it is always faster to use this function.
+This function always works asynchronously.
To retrieve data after a successful execution of memcached_mget(), you
+will need to call memcached_fetch_result(). You should continue to call
+this function until it returns a NULL (i.e. no more values). If you need to quit
+in the middle of a memcached_mget() call, you can execute a
+memcached_quit(), those this is not required.
memcached_fetch_result() is used to fetch an individual value from the
+server. memcached_mget() must always be called before using this method.
You must pass in a key and its length to fetch the object. You must supply
-three pointer variables which will give you the state of the returned
-object. A uint32_t pointer to contain whatever flags you stored with the value, a size_t pointer which will be filled with size of of the
-object, and a memcached_return_t pointer to hold any error. The
-object will be returned upon success and NULL will be returned on failure. MEMCACHED_END is returned by the *error value when all objects that have been found are returned. The final value upon MEMCACHED_END is null.
memcached_fetch_result() is used to return a memcached_result_st structure from a memcached server. The result object is forward compatible
+three pointer variables which will give you the state of the returned object.
+A uint32_t pointer to contain whatever flags you stored with the value,
+a size_t pointer which will be filled with size of of the object, and a
+memcached_return_t pointer to hold any error. The object will be
+returned upon success and NULL will be returned on failure. MEMCACHED_END is
+returned by the *error value when all objects that have been found have been
+returned. The final value upon MEMCACHED_END is null.
memcached_fetch_result() is used to return a memcached_result_st
+structure from a memcached server. The result object is forward compatible
with changes to the server. For more information please refer to the
memcached_result_st help. This function will dynamically allocate a
result structure for you if you do not pass one to the function.
memcached_st that can be cloned for use in the called
function (it can not be used directly). It also passes a result set which does
-not need to be freed. Finally it passes a âcontextâ. This is just a pointer to
+not need to be freed. Finally it passes a "context". This is just a pointer to
a memory reference you supply the calling function. Currently only one value
is being passed to each function call. In the future there will be an option
to allow this to be an array.
@@ -310,23 +292,31 @@ The difference is that they take a master key that is used for determining
which server an object was stored if key partitioning was used for storage.
All of the above functions are not tested when the
MEMCACHED_BEHAVIOR_USE_UDP has been set. Executing any of these
-functions with this behavior on will result in MEMCACHED_NOT_SUPPORTED being returned, or for those functions which do not return a memcached_return_t, the error function parameter will be set to MEMCACHED_NOT_SUPPORTED.
MEMCACHED_NOT_SUPPORTED being
+returned, or for those functions which do not return a
+memcached_return_t, the error function parameter will be set to
+MEMCACHED_NOT_SUPPORTED.
All objects retrieved via memcached_get() or memcached_get_by_key() must be freed with free(3).
memcached_get() will return NULL on
-error. You must look at the value of error to determine what the actual error
-was.
All objects retrieved via memcached_get() or memcached_get_by_key()
+must be freed with free(3).
memcached_get() will return NULL on error.
+You must look at the value of error to determine what the actual error was.
memcached_fetch_execute() return MEMCACHED_SUCCESS if
-all keys were successful. MEMCACHED_NOTFOUND will be return if no
+all keys were successful. MEMCACHED_NOTFOUND will be returned if no
keys at all were found.
memcached_fetch_result() sets error
to MEMCACHED_END upon successful conclusion.
-MEMCACHED_NOTFOUND will be return if no keys at all were found.
MEMCACHED_NOTFOUND will be returned if no keys at all were found.