public static $default_network_disable = 0;

	/**
	 * Default for disabling checksums.
	 *
	 * @var int Bool-ish. Default 0.
	 */
	public static $default_checksum_disable = 0;

	/**
	 * Should Sync use cron?
	 *
	 * @var int Bool-ish value. Default 1.
	 */
	public static $default_sync_via_cron = 1;

	/**
	 * Default if Sync should render content.
	 *
	 * @var int Bool-ish value. Default is 0.
	 */
	public static $default_render_filtered_content = 0;

	/**
	 * Default number of items to enqueue at a time when running full sync.
	 *
	 * @var int Number of items.
	 */
	public static $default_max_enqueue_full_sync = 100;

	/**
	 * Default for maximum queue size during a full sync.
	 *
	 * Each item will represent a value in the wp_options table.
	 *
	 * @var int Number of items.
	 */
	public static $default_max_queue_size_full_sync = 1000; // max number of total items in the full sync queue.

	/**
	 * Default max time for sending in immediate mode.
	 *
	 * @var float Number of Seconds
	 */
	public static $default_full_sync_send_duration = 9;

	/**
	 * Defaul for time between syncing callables.
	 *
	 * @var int Number of seconds.
	 */
	public static $default_sync_callables_wait_time = MINUTE_IN_SECONDS; // seconds before sending callables again.

	/**
	 * Default for time between syncing constants.
	 *
	 * @var int Number of seconds.
	 */
	public static $default_sync_constants_wait_time = HOUR_IN_SECONDS; // seconds before sending constants again.
	/**
	 * Default for sync queue lock timeout time.
	 *
	 * @var int Number of seconds.
	 */
	public static $default_sync_queue_lock_timeout = 120; // 2 minutes.

	/**
	 * Default for cron sync time limit.
	 *
	 * @var int Number of seconds.
	 */
	public static $default_cron_sync_time_limit = 4 * MINUTE_IN_SECONDS;

	/**
	 * Default for number of term relationship items sent in an full sync item.
	 *
	 * @var int Number of items.
	 */
	public static $default_term_relationships_full_sync_item_size = 100;

	/**
	 * Default for enabling incremental sync.
	 *
	 * @var int 1 for true.
	 */
	public static $default_sync_sender_enabled = 1; // Should send incremental sync items.

	/**
	 * Default for enabling Full Sync.
	 *
	 * @var int 1 for true.
	 */
	public static $default_full_sync_sender_enabled = 1; // Should send full sync items.

	/**
	 * Default Full Sync config
	 *
	 * @var array list of module names.
	 */
	public static $default_full_sync_config = array(
		'constants'          => 1,
		'functions'          => 1,
		'options'            => 1,
		'updates'            => 1,
		'themes'             => 1,
		'users'              => 1,
		'terms'              => 1,
		'posts'              => 1,
		'comments'           => 1,
		'term_relationships' => 1,
	);

	/**
	 * Default Full Sync max objects to send on a single request.
	 *
	 * @var array list of module => max.
	 */
	public static $default_full_sync_limits = array(
		'users'              => array(
			'chunk_size' => 100,
			'max_chunks' => 10,
		),
		'terms'              => array(
			'chunk_size' => 1000,
			'max_chunks' => 10,
		),
		'posts'              => array(
			'chunk_size' => 100,
			'max_chunks' => 1,
		),
		'comments'           => array(
			'chunk_size' => 100,
			'max_chunks' => 10,
		),
		'term_relationships' => array(
			'chunk_size' => 1000,
			'max_chunks' => 10,
		),
	);

}