This plugin demonstrates HPOS coding examples
/includes/class-order-table-examples.php => Working examples of modifying the order overview & order edit pages
/includes/class-order-edit-examples.php => Code Snippets
/includes/class-wc-examples.php => Code snippets from WooCommerce to show how WC handles HPOS compatibility internally
See internal Codeable Google Doc on HPOS for details (access for Codeable experts only)
https://woocommerce.com/document/high-performance-order-storage/
https://github.com/woocommerce/woocommerce/blob/trunk/docs/high-performance-order-storage/README.md
https://developer.woocommerce.com/docs/hpos-extension-recipe-book/
https://developer.woocommerce.com/docs/hpos-cli-tools/
https://github.com/orgs/woocommerce/projects/124 Project Kanban Board
https://developer.woocommerce.com/2022/10/11/hpos-upgrade-faqs/
https://developer.woocommerce.com/docs/developing-using-woocommerce-crud-objects/
https://woocommerce.com/de/posts/platform-update-high-performance-order-storage-for-woocommerce/
https://developer.woo.com/2023/11/27/joining-the-conversation-woo-community-slack/ Channel #hpos-upgrade-party.
https://developer.woocommerce.com/releases/
https://developer.woocommerce.com/changelog/
https://github.com/woocommerce/woocommerce/blob/trunk/changelog.txt
https://github.com/woocommerce/woocommerce/wiki/wc_get_orders-and-WC_Order_Query
https://developer.woocommerce.com/docs/hpos-order-querying-apis/
https://rudrastyh.com/woocommerce/high-performance-order-storage.html
https://devpress.com/how-to-add-a-metabox-to-the-orders-screen-in-woocommerce/