Practical engineering runbooks, terminal benchmarks, and code fixes categorized under Database Tuning.
WordPress loads every single row marked with autoload='yes' into server memory on every HTTP request. Here is how abandoned plugin transients inflate this table past 50MB, causing 2-second TTFB delays, and the SQL queries to clean it safely.
How to pinpoint hidden table scans, missing composite indexes, and temporary table creation choking origin server throughput on high-traffic databases.
Why default MySQL 8 configurations exhaust RAM on budget cloud servers, how to calculate the optimal innodb_buffer_pool_size, and how to prevent the Linux OOM killer from terminating your database.
A forensic guide to resolving Redis connection timeouts, transient locking contention, and memory exhaustion that slow down WooCommerce checkouts.