marginalia

Automatically attaches comments to ActiveRecord queries without invasive code changes, as shown in the default setup adding controller and action names.

Allows reordering and adding custom comment components like line numbers or hostname, detailed in the customization section with module method examples.

Tested with MySQL, PostgreSQL, and SQLite, and used in production, ensuring reliability across various database environments.

Designed to work with query digest tools like pt-query-digest, enabling automated identification of performance hotspots from logs.