# Supply a DBI handle
#
my $cache = CHI->new( driver => 'DBI', dbh => DBI->connect(...) );
# or a DBIx::Connector
#
my $cache = CHI->new( driver => 'DBI', dbh => DBIx::Connector->new(...) );
# or code that generates a DBI handle
#
my $cache = CHI->new( driver => 'DBI', dbh => sub { ...; return $dbh } );
DESCRIPTION
This driver uses a database table to store the cache. The newest
versions of MySQL and SQLite work are known to work. Other RDBMSes
should work.
Why cache things in a database? Isn't the database what people are
trying to avoid with caches? This is often true, but a simple primary
key lookup is extremely fast in many databases and this provides a
shared cache that can be used when less reliable storage like memcached
is not appropriate. Also, the speed of simple lookups on MySQL when
accessed over a local socket is very hard to beat. DBI is fast.
AUTHORS
Original version by Justin DeVuyst and Perrin Harkins. Currently
maintained by Jonathan Swartz.
COPYRIGHT AND LICENSE
This software is copyright (c) 2011 by Justin DeVuyst.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
