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Practical mod_perl / HTML Version / | |
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20.2.2. Improving Speed by Skipping ping( ) |
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If you use Apache::DBI and want to save a little bit of time, you can change how often the ping( ) method is called. The following setting in a startup file:
Apache::DBI->setPingTimeOut($data_source, $timeout)
will change this behavior. If the value of $timeout is 0, Apache:DBI will validate the database connection using the ping( ) method for every database access. This is the default. Setting $timeout to a negative value will deactivate the validation of the database handle. This can be used for drivers that do not implement the ping( ) method (but it's generally a bad idea, because you don't know if your database handle really works). Setting $timeout to a positive value will ping the database on access only if the previous access was more than $timeoutseconds earlier.
$data_source is the same as in the connect( ) method (e.g., DBI:mysql:...).
Continue to:
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