Post revisions, autosave, and trash handling

You can also completely disable the default revision feature by adding this line to the wp-config.php file, on its own line:

define (‘WP_POST_REVISIONS’, false); // disable post revisions

WordPress creates these revisions through the Autosave feature. By default,

WordPress automatically saves a post revision every minute. If you take a
long time to write a post, you could rack up dozens of post revisions, which
are stored in the database and take up room. You can change the autosave
interval by adding this code to the wp-config.php file on its own line (this
code changes the autosave interval to 160 seconds, specifically — you can
choose any time interval you want):

define (‘AUTOSAVE_INTERVAL’, 160); // in seconds