git.m6w6.name Git - awesomized/libmemcached/blob - docs/source/libmemcached/memcached_delete.rst

   1 ===========================
   2 Deleting data from a server
   3 ===========================
   4
   5 .. index:: object: memcached_st
   6
   7 --------
   8 SYNOPSIS
   9 --------
  10
  11
  12 #include <libmemcached/memcached.h>
  13
  14 .. function:: memcached_return_t memcached_delete (memcached_st *ptr, const char *key, size_t key_length, time_t expiration)
  15
  16 .. function:: memcached_return_t memcached_delete_by_key (memcached_st *ptr, const char *group_key, size_t group_key_length, const char *key, size_t key_length, time_t expiration)
  17
  18 Compile and link with -lmemcached
  19
  20 -----------
  21 DESCRIPTION
  22 -----------
  23
  24
  25 :func:`memcached_delete` is used to delete a particular key.
  26 :func:`memcached_delete_by_key` works the same, but it takes a master key
  27 to find the given value.
  28
  29 Expiration works by placing the item into a delete queue, which means that
  30 it won't be possible to retrieve it by the "get" command. The "add" and
  31 "replace" commands with this key will also fail (the "set" command will
  32 succeed, however). After the time passes, the item is finally deleted from server memory.
  33
  34 Please note the the memcached server removed tests for expiration in
  35 the 1.4 version.
  36
  37
  38 ------
  39 RETURN
  40 ------
  41
  42
  43 A value of type :type:`memcached_return_t` is returned
  44 On success that value will be `MEMCACHED_SUCCESS`.
  45 Use :func:`memcached_strerror` to translate this value to a printable
  46 string.
  47
  48 If you are using the non-blocking mode of the library, success only
  49 means that the message was queued for delivery.
  50
  51
  52
  53 --------
  54 SEE ALSO
  55 --------
  56
  57 .. only:: man
  58
  59   :manpage:`memcached(1)` :manpage:`libmemcached(3)` :manpage:`memcached_strerror(3)`