NAME
   Apache::Session::Memorycached - An implementation of Apache::Session

SYNOPSIS
    use Apache::Session::Memorycached;

       tie %session, 'Apache::Session::Memorycached', $cookie, {
             'servers' => ["10.75.1.19:11211"], #all write operations
             'local'  =>  ["localhost:11211"],  #read-only operations
             'timeout' => '300'
        };

    tie %s, 'Apache::Session::Memorycached', undef,
       {servers  => ['mymemcachedserver:port'],
        'timeout' => '300',
        'updateOnly' => 1 ,
        'principal' => uid,
           };

   In order to optimize the network ,you can use a local memcached server.
   All read-only op�ration are sending fisrt at local server .If you need
   write ou rewrite data , the data is sending at the principal memcached
   sever and local cache too for synchronisation.

   note : 'updateOnly' => 1 just realize up-date operation not init
   operation. Init operation is use in order to book and lock the number
   session but it's not available in this module

     'principal' => uid :  this  parameter is use to create reverse reference
     like this : MD5_hex(uid) => id_session in memcached server . By this it usefull to retrieve id_session from principal name . And add uid_MD5 => MD5_hex(uid) in main session .

DESCRIPTION
   This module is an implementation of Apache::Session. It uses the
   memcached system backing store . You may specify servers (principal) and
   locals caches for locking in arguments to the constructor. See the
   example, and the documentation for Apache::Session::Store::Memorycached
   and Cache::Memcached .

REPLICATION
    Now Apache::Session::Memorycahed inclues replication between memecached servers
    Two new components provide a replication service .
    First package is Apache::Session::MemcachedReplicator
    Second is Apache::Session::MemcachedClient

    It's now possible to do replication master to slave or master to master
    see man pages and scripts .

SOAP service
    Now Apache::Session::Memorycached inclues a SOAP service in order to set or
    get %session in any language . The SOAP service translates data in Perl hashes

 Installation of SOAP service
    All scripts are in scripts directory

    Put MemcachedSOAPClass.pm and MemcachedSOAP.cgi in the cgi-bin directory of your apache server with the appropriate right (x) .
    Change in MemcachedSOAP.cgi the memcached server address .
     (line 11 : $machine = 'ip.ip.ip.ip:11211';  )

    Try the three scripts  statTest.pl (first !)  then getTest.pl finish with setTest.pl.

   The lemonldap project (SSO under GPL) uses this module

AUTHOR
   This module was written by eric german <[email protected]>.

    Completed by  Habib ZITOUNI <[email protected]> and
   Hamza AISSAT<[email protected]>

    SOAP service is a contribution of  Casimir ANTUNES .

SEE ALSO
   Apache::Session::DB_File, Apache::Session::Flex,
   Apache::Session::MemcachedClient,Apache::Session::MemcachedReplicator,
   Apache::Session::MySQL, Apache::Session::Postgres, Apache::Session

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