git.m6w6.name Git - m6w6/libmemcached/blob - docs/memcached_servers.pod

   1 =head1 NAME
   2
   3 memcached_server_count, memcached_server_list, memcached_server_add, memcached_server_push, memcached_server_get_last_disconnect - Manage server list
   4
   5 =head1 LIBRARY
   6
   7 C Client Library for memcached (libmemcached, -lmemcached)
   8
   9 =head1 SYNOPSIS
  10
  11   #include <memcached.h>
  12
  13   unsigned int memcached_server_count (memcached_st *ptr);
  14
  15   memcached_server_st *
  16     memcached_server_list (memcached_st *ptr);
  17
  18   memcached_return
  19     memcached_server_add (memcached_st *ptr,
  20                           const char *hostname,
  21                           unsigned int port);
  22
  23   memcached_return
  24     memcached_server_add_udp (memcached_st *ptr,
  25                           const char *hostname,
  26                           unsigned int port);
  27
  28   memcached_return
  29     memcached_server_add_unix_socket (memcached_st *ptr,
  30                                       const char *socket);
  31
  32   memcached_return
  33     memcached_server_push (memcached_st *ptr,
  34                            memcached_server_st *list);
  35
  36   memcached_server_st *
  37     memcached_server_by_key (memcached_st *ptr,
  38                              const char *key, size_t key_length,
  39                              memcached_return *error);
  40   memcached_server_st *
  41     memcached_server_get_last_disconnect (memcached_st *ptr)
  42
  43
  44 =head1 DESCRIPTION
  45
  46 libmemcached(3) performs operations on a list of hosts. The order of these
  47 hosts determine routing to keys. Functions are provided to add keys to
  48 memcached_st structures. To manipulate lists of servers see
  49 memcached_server_st(3).
  50
  51 memcached_server_count() provides you a count of the current number of
  52 servers being used by a C<memcached_st> structure.
  53
  54 memcached_server_list() is used to provide an array of all defined hosts.
  55 You are responsible for freeing this list (aka it is not a pointer to the
  56 currently used structure).
  57
  58 memcached_server_add() pushes a single TCP server into the C<memcached_st>
  59 structure. This server will be placed at the end. Duplicate servers are
  60 allowed, so duplication is not checked. Executing this function with the
  61 C<MEMCACHED_BEHAVIOR_USE_UDP> behavior set will result in a
  62 C<MEMCACHED_INVALID_HOST_PROTOCOL>.
  63
  64 memcached_server_add_udp() pushes a single UDP server into the C<memcached_st>
  65 structure. This server will be placed at the end. Duplicate servers are
  66 allowed, so duplication is not checked. Executing this function with out
  67 setting the C<MEMCACHED_BEHAVIOR_USE_UDP> behavior will result in a
  68 C<MEMCACHED_INVALID_HOST_PROTOCOL>.
  69
  70 memcached_server_add_unix_socket() pushes a single UNIX socket into the
  71 C<memcached_st> structure. This UNIX socket will be placed at the end.
  72 Duplicate servers are allowed, so duplication is not checked. The length
  73 of the filename must be one character less then MEMCACHED_MAX_HOST_LENGTH.
  74
  75 memcached_server_push() pushes an array of C<memcached_server_st> into
  76 the C<memcached_st> structure. These servers will be placed at the
  77 end. Duplicate servers are allowed, so duplication is not checked. A
  78 copy is made of structure so the list provided (and any operations on
  79 the list) are not saved.
  80
  81 memcached_server_by_key() allows you to provide a key and retrieve the
  82 server which would be used for assignment. This structure is cloned
  83 from its original structure and must be freed. If NULL is returned you
  84 should consult *error. The returning structure should be freed with
  85 memcached_server_free().
  86
  87 memcached_server_get_last_disconnect() returns a pointer to the last server
  88 for which there was a connection problem. It does not mean this particular
  89 server is currently dead but if the library is reporting a server is,
  90 the returned server is a very good candidate.
  91
  92 =head1 RETURN
  93
  94 Varies, see particular functions.
  95
  96 =head1 HOME
  97
  98 To find out more information please check:
  99 L<http://tangent.org/552/libmemcached.html>
 100
 101 =head1 AUTHOR
 102
 103 Brian Aker, E<lt>brian@tangent.orgE<gt>
 104
 105 =head1 SEE ALSO
 106
 107 memcached(1) libmemcached(3) memcached_strerror(3)
 108
 109 =cut
 110