git.m6w6.name Git - m6w6/libmemcached/blob - docs/man/memcached_servers.3

   1 .TH "MEMCACHED_SERVERS" "3" "July 21, 2011" "0.51" "libmemcached"
   2 .SH NAME
   3 memcached_servers \- libmemcached Documentation
   4 .
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  32 .
  33 .SH SYNOPSIS
  34 .sp
  35 #include <libmemcached/memcached.h>
  36 .INDENT 0.0
  37 .TP
  38 .B memcached_server_fn
  39 .UNINDENT
  40 .INDENT 0.0
  41 .TP
  42 .B uint32_t memcached_server_count(memcached_st\fI\ *ptr\fP)
  43 .UNINDENT
  44 .INDENT 0.0
  45 .TP
  46 .B memcached_return_t memcached_server_add(memcached_st\fI\ *ptr\fP, const char\fI\ *hostname\fP, in_port_t\fI\ port\fP)
  47 .UNINDENT
  48 .INDENT 0.0
  49 .TP
  50 .B memcached_return_t memcached_server_add_udp(memcached_st\fI\ *ptr\fP, const char\fI\ *hostname\fP, in_port_t\fI\ port\fP)
  51 .UNINDENT
  52 .INDENT 0.0
  53 .TP
  54 .B memcached_return_t memcached_server_add_unix_socket(memcached_st\fI\ *ptr\fP, const char\fI\ *socket\fP)
  55 .UNINDENT
  56 .INDENT 0.0
  57 .TP
  58 .B memcached_return_t memcached_server_push(memcached_st\fI\ *ptr\fP, const memcached_server_st\fI\ *list\fP)
  59 .UNINDENT
  60 .INDENT 0.0
  61 .TP
  62 .B memcached_server_instance_st memcached_server_by_key(const memcached_st\fI\ *ptr\fP, const char\fI\ *key\fP, size_t\fI\ key_length\fP, memcached_return_t\fI\ *error\fP)
  63 .UNINDENT
  64 .INDENT 0.0
  65 .TP
  66 .B memcached_server_instance_st memcached_server_get_last_disconnect(const memcached_st\fI\ *ptr\fP)
  67 .UNINDENT
  68 .INDENT 0.0
  69 .TP
  70 .B memcached_return_t memcached_server_cursor(const memcached_st\fI\ *ptr\fP, const \fI\%memcached_server_fn\fP\fI\ *callback\fP, void\fI\ *context\fP, uint32_t\fI\ number_of_callbacks\fP)
  71 .UNINDENT
  72 .sp
  73 compile and link with \-lmemcached
  74 .SH DESCRIPTION
  75 .sp
  76 \fBlibmemcached\fP performs operations on a list of hosts. The order of
  77 these hosts determine routing to keys. Functions are provided to add keys to
  78 memcached_st structures. To manipulate lists of servers see
  79 memcached_server_st(3).
  80 .sp
  81 \fI\%memcached_server_count()\fP provides you a count of the current number of
  82 servers being used by a \fBmemcached_st\fP structure.
  83 .INDENT 0.0
  84 .TP
  85 .B \fI\%memcached_server_add()\fP pushes a single TCP server into the \fBmemcached_st\fP structure. This server will be placed at the end. Duplicate servers
  86 .sp
  87 are allowed, so duplication is not checked. Executing this function with the \fBMEMCACHED_BEHAVIOR_USE_UDP\fP behavior set will result in a \fBMEMCACHED_INVALID_HOST_PROTOCOL\fP.
  88 .UNINDENT
  89 .sp
  90 \fI\%memcached_server_add_udp()\fP pushes a single UDP server into the \fBmemcached_st\fP structure. This server will be placed at the end. Duplicate
  91 servers are allowed, so duplication is not checked. Executing this function with out setting the \fBMEMCACHED_BEHAVIOR_USE_UDP\fP behavior will result in a
  92 \fBMEMCACHED_INVALID_HOST_PROTOCOL\fP.
  93 .sp
  94 \fI\%memcached_server_add_unix_socket()\fP pushes a single UNIX socket into the \fBmemcached_st\fP structure. This UNIX socket will be placed at the end.
  95 Duplicate servers are allowed, so duplication is not checked. The length
  96 of the filename must be one character less than \fBMEMCACHED_MAX_HOST_LENGTH\fP.
  97 .sp
  98 \fI\%memcached_server_push()\fP pushes an array of \fBmemcached_server_st\fP into the \fBmemcached_st\fP structure. These servers will be placed at
  99 the end. Duplicate servers are allowed, so duplication is not checked. A
 100 copy is made of structure so the list provided (and any operations on
 101 the list) are not saved.
 102 .sp
 103 \fI\%memcached_server_by_key()\fP allows you to provide a key and retrieve the
 104 server which would be used for assignment. This structure is cloned
 105 from its original structure and must be freed. If NULL is returned you
 106 should consult *error. The returning structure should be freed with
 107 \fBmemcached_server_free()\fP.
 108 .sp
 109 \fI\%memcached_server_get_last_disconnect()\fP returns a pointer to the last
 110 server for which there was a connection problem. It does not mean this
 111 particular server is currently dead but if the library is reporting a server
 112 is, the returned server is a very good candidate.
 113 .sp
 114 \fI\%memcached_server_cursor()\fP takes a memcached_st and loops through the
 115 list of hosts currently in the cursor calling the list of callback
 116 functions provided. You can optionally pass in a value via
 117 context which will be provided to each callback function. An error
 118 return from any callback will terminate the loop. \fI\%memcached_server_cursor()\fP is passed the original caller \fBmemcached_st\fP in its current state.
 119 .SH RETURN
 120 .sp
 121 Varies, see particular functions.
 122 .SH HOME
 123 .sp
 124 To find out more information please check:
 125 \fI\%http://libmemcached.org/\fP
 126 .SH SEE ALSO
 127 .sp
 128 \fImemcached(1)\fP \fIlibmemcached(3)\fP \fImemcached_strerror(3)\fP
 129 .SH AUTHOR
 130 Brian Aker
 131 .SH COPYRIGHT
 132 2011, Brian Aker DataDifferential, http://datadifferential.com/
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