Troubleshooting Performance Issues in High-Volume Order Storage

Issues with high latency in query performance can arise when backward compatibility settings, such as HPOS, are retained after upgrades. In one instance, a query was observed taking 40 seconds, highlighting the inefficacy of existing query structures, which often used 'like' statements and wildcards. Rewriting these queries without improving performance led to exploration of available solutions. Discovering a new indexing feature introduced in WooCommerce version 9.00 beta 2 significantly enhanced query speed, demonstrating the importance of utilizing updated features and optimizations for performance improvement. After implementing the recommended changes, the same queries executed in just 100 milliseconds, reaffirming the effectiveness of the update and proper system configuration.