1Apache::Session::Lock::UMsyeSrQLC(o3n)tributed Perl DocuAmpeancthaet:i:oSnession::Lock::MySQL(3)
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NAME

6       Apache::Session::Lock::MySQL - Provides mutual exclusion using MySQL
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SYNOPSIS

9        use Apache::Session::Lock::MySQL;
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11        my $locker = Apache::Session::Lock::MySQL->new();
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13        $locker->acquire_read_lock($ref);
14        $locker->acquire_write_lock($ref);
15        $locker->release_read_lock($ref);
16        $locker->release_write_lock($ref);
17        $locker->release_all_locks($ref);
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DESCRIPTION

20       Apache::Session::Lock::MySQL fulfills the locking interface of
21       Apache::Session.  Mutual exclusion is achieved through the use of
22       MySQL's GET_LOCK and RELEASE_LOCK functions.  MySQL does not support
23       the notion of read and write locks, so this module only supports
24       exclusive locks.  When you request a shared read lock, it is instead
25       promoted to an exclusive write lock.
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CONFIGURATION

28       The module must know how to connect to your MySQL database to acquire
29       locks.  You must provide a datasource name, a user name, and a
30       password.  These options are passed in the usual Apache::Session style,
31       and are very similar to the options for Apache::Session::Store::MySQL.
32       Example:
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34        tie %hash, 'Apache::Session::MySQL', $id, {
35            LockDataSource => 'dbi:mysql:database',
36            LockUserName   => 'database_user',
37            LockPassword   => 'K00l'
38        };
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40       Instead, you may pass in an already opened DBI handle to your database.
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42        tie %hash, 'Apache::Session::MySQL', $id, {
43            LockHandle => $dbh
44        };
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AUTHOR

47       This module was written by Jeffrey William Baker <jwbaker@acm.org>.
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SEE ALSO

50       Apache::Session
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54perl v5.28.1                      2019-02-02   Apache::Session::Lock::MySQL(3)
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