How to refactor legacy user transaction ledgers queries using modern WP_Query and custom Transient caching
Deconstructing Legacy Transaction Ledger Queries Many established WordPress sites, particularly those handling e-commerce, membership, or complex user data, often harbor legacy systems for managing user transactions. These systems, frequently built on custom database tables and direct SQL queries, become performance bottlenecks as data volume grows. The primary culprits are often inefficient joins, unindexed columns, and […]