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In MySQL, is it possible to disable triggers for only certain queries or users?

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Almost every table in my DB has triggers that fire on INSERT, UPDATE, DELETE and write the changes to a separate read only DB. This makes it possible to track changes and undo things well after the fact, but also makes operations slower.

For changes that don't need an audit trail, would it be possible to disable the triggers for only specific queries or specific database users?

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First of all, it seems that Mysql does not allow to disable triggers.

One way would be to set a session variable which can be checked in each trigger. This still incurs some overhead (trigger is still fired for each record), but the actual trigger functionality is very small.

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