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Available since: 1.6

searchwp_background_deltas

SearchWP automatically maintains it’s index by performing delta updates when content is added, edited, or removed. If you have a high traffic website you may want to offload this behavior to a custom WP-Cron job.

The difference between this hook and searchwp_auto_reindex is that this hook prevents both purging and re-indexing of posts. searchwp_auto_reindex allows for posts to be purged on edit, but not reindexed.

Example: To prevent SearchWP from automatically performing delta updates, add the following to your active theme’s functions.php:

<?php
// prevent SearchWP from automatically maintaining it's index
add_filter( 'searchwp_background_deltas', '__return_false' );
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Note that if you disable automatic index updates, you will need to periodically tell SearchWP to update it’s index. You can do so by setting up a custom WP-Cron job or something similar, but the important part is to ensure you fire the following:

<?php
// Manually process flagged index updates
if( function_exists( 'SWP' ) ) {
SWP()->process_updates();
}
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