Session::Lock::MySQL(3) User Contributed Perl Documentation Session::Lock::MySQL(3)NAME
Apache::Session::Lock::MySQL - Provides mutual exclusion using MySQL
SYNOPSIS
use Apache::Session::Lock::MySQL;
my $locker = Apache::Session::Lock::MySQL->new();
$locker->acquire_read_lock($ref);
$locker->acquire_write_lock($ref);
$locker->release_read_lock($ref);
$locker->release_write_lock($ref);
$locker->release_all_locks($ref);
DESCRIPTION
Apache::Session::Lock::MySQL fulfills the locking interface of Apache::Session. Mutual exclusion is achieved through the use of MySQL's
GET_LOCK and RELEASE_LOCK functions. MySQL does not support the notion of read and write locks, so this module only supports exclusive
locks. When you request a shared read lock, it is instead promoted to an exclusive write lock.
CONFIGURATION
The module must know how to connect to your MySQL database to acquire locks. You must provide a datasource name, a user name, and a
password. These options are passed in the usual Apache::Session style, and are very similar to the options for
Apache::Session::Store::MySQL. Example:
tie %hash, 'Apache::Session::MySQL', $id, {
LockDataSource => 'dbi:mysql:database',
LockUserName => 'database_user',
LockPassword => 'K00l'
};
Instead, you may pass in an already opened DBI handle to your database.
tie %hash, 'Apache::Session::MySQL', $id, {
LockHandle => $dbh
};
AUTHOR
This module was written by Jeffrey William Baker <jwbaker@acm.org>.
SEE ALSO
Apache::Session
perl v5.12.1 2008-01-08 Session::Lock::MySQL(3)
Check Out this Related Man Page
Apache::Session::Store::MySQL(3pm) User Contributed Perl Documentation Apache::Session::Store::MySQL(3pm)NAME
Apache::Session::Store::MySQL - Store persistent data in a MySQL database
SYNOPSIS
use Apache::Session::Store::MySQL;
my $store = new Apache::Session::Store::MySQL;
$store->insert($ref);
$store->update($ref);
$store->materialize($ref);
$store->remove($ref);
DESCRIPTION
Apache::Session::Store::MySQL fulfills the storage interface of Apache::Session. Session data is stored in a MySQL database.
SCHEMA
To use this module, you will need at least these columns in a table called 'sessions', or another table name if you provide the TableName
argument:
id char(32) # or however long your session IDs are.
a_session text
To create this schema, you can execute this command using the mysql program:
CREATE TABLE sessions (
id char(32) not null primary key,
a_session text
);
If you use some other command, ensure that there is a unique index on the table's id column.
CONFIGURATION
The module must know what datasource, username, and password to use when connecting to the database. These values can be set using the
options hash (see Apache::Session documentation). The options are:
DataSource
UserName
Password
TableName
Handle
Example:
tie %hash, 'Apache::Session::MySQL', $id, {
DataSource => 'dbi:mysql:database',
UserName => 'database_user',
Password => 'K00l',
TableName => 'sessions'
};
Instead, you may pass in an already-opened DBI handle to your database.
tie %hash, 'Apache::Session::MySQL', $id, {
Handle => $dbh
};
AUTHOR
This modules was written by Jeffrey William Baker <jwbaker@acm.org>
SEE ALSO
Apache::Session
perl v5.10.1 2010-10-18 Apache::Session::Store::MySQL(3pm)
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