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Manual Reference Pages  -  MEMCACHED_FETCH (3)

NAME

memcached_fetch - Retrieving data from the server \$1 \n[an-margin] level \n[rst2man-indent-level] level margin: \n[rst2man-indent\n[rst2man-indent-level]] - \n[rst2man-indent0] \n[rst2man-indent1] \n[rst2man-indent2]
\$1 \n[an-margin] level \n[rst2man-indent-level] level margin: \n[rst2man-indent\n[rst2man-indent-level]] - \n[rst2man-indent0] \n[rst2man-indent1] \n[rst2man-indent2]

CONTENTS

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SYNOPSIS

#include <libmemcached/memcached.h>
char *memcached_fetch(memcached_st *ptr, char *key, size_t *key_length, size_t *value_length, uint32_t *flags, memcached_return_t *error)
  Deprecated since version 0.50: Use memcached_fetch_result() instead.

Compile and link with -lmemcached

DESCRIPTION

 memcached_fetch() 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.

Values returned by  memcached_fetch() must be freed by the caller.

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.

RETURN

 memcached_fetch() sets error to to MEMCACHED_END upon successful conclusion. MEMCACHED_NOTFOUND will be return if no keys at all were found.

MEMCACHED_KEY_TOO_BIG is set to error whenever  memcached_fetch() was used and the key was set larger then MEMCACHED_MAX_KEY, which was the largest key allowed for the original memcached ascii server.

HOME

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

SEE ALSO

memcached(1) libmemcached(3) memcached_strerror(3) memcached_fetch_result(3)

AUTHOR

Brian Aker

COPYRIGHT

2011-2013, Brian Aker DataDifferential, http://datadifferential.com/
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1.0.18 MEMCACHED_FETCH (3) February 09, 2014

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