• Some SQL Tricks of an Application DBA | Haki Benita (sql)
• Discover Rails: Active Record – Johnson Zhan – Medium (rails, activerecord, ruby, sql)
• Indexes on Rails: How to make the most of your Postgres database - Karol Galanciak - Ruby on Rails and Ember.js consultant (rails, sql)
• MySQL High Availability at GitHub | GitHub Engineering (mysql, sysadmin)
• PostgreSQL exercises (postgres, learning, sql)
• Extremely Fast MySQL Backup and Restore Using Mydumper/Myloader | WP Lobster (sysadmin, mysql)
• mysqldump without table locks (MyISAM and InnoDB) (sysadmin, mysql)
• ProxySQL (sql)
• Using EXPLAIN ANALYZE to debug a slow SQL query – Reverb.com — Fretboards and Motherboards (sql)
• Orchestrator at GitHub - GitHub Engineering (mysql, ha)
• MySQL restore after a crash and disk issues - Raymii.org (mysql)