Source

File: wp-includes/ms-site.php

function update_site_cache( $sites, $update_meta_cache = true ) {
	if ( ! $sites ) {
		return;
	}
	$site_ids = array();
	foreach ( $sites as $site ) {
		$site_ids[] = $site->blog_id;
		wp_cache_add( $site->blog_id, $site, 'sites' );
		wp_cache_add( $site->blog_id . 'short', $site, 'blog-details' );
	}

	if ( $update_meta_cache ) {
		update_sitemeta_cache( $site_ids );
	}
}