HPOS (High-Performance Order Storage) Compatibility

WooCommerce introduced High-Performance Order Storage (HPOS) as an alternative storage engine for orders, using dedicated custom database tables instead of WordPress post meta. This can significantly improve performance on high-volume stores.

Delivery Date & Timeslot for WooCommerce is fully compatible with HPOS. You can enable HPOS in WooCommerce without breaking delivery date or timeslot functionality.

What This Means in Practice

• Delivery date and timeslot data is stored and retrieved correctly whether HPOS is enabled or disabled.
• The order details view in WooCommerce > Orders shows the delivery date and timeslot regardless of which storage engine you use.
• Order emails and the thank-you page display the information correctly under both storage modes.

Enabling HPOS in WooCommerce

If you haven't already enabled HPOS and want to, go to WooCommerce > Settings > Advanced > Features and enable High-Performance Order Storage. WooCommerce will offer a migration tool to move existing orders to the new tables.

Before enabling HPOS on a live store, confirm that all your other WooCommerce plugins also declare HPOS compatibility — a conflict with another plugin could cause order data issues.

Legacy Mode

If you're on an older WooCommerce version or have other plugins that aren't HPOS-ready, you can keep WooCommerce in legacy (post meta) mode — the delivery date plugin works correctly in that mode too.