Bill Karwin

Principal Trainer, Percona, Inc

Bill Karwin has been a software engineer for over twenty years, developing and supporting applications, libraries, and servers such as Zend Framework for PHP 5, the InterBase relational database, and the Enhydra Java application server. Throughout his career, Bill has shared his knowledge to help other programmers achieve success and productivity. Bill has answered thousands of questions, giving him a unique perspective on SQL mistakes that most commonly cause problems. Bill authored the book "SQL Antipatterns", collecting frequent blunders and showing better solutions.

Sessions

Percona Toolkit is a collection of more then 30 command-line tools for MySQL that automate a variety of MySQL and system tasks. With so many choices, it can be difficult knowing where to start: is pt-archiver safe? what is the relationship between pt-table-checksum and pt-table-sync? how does pt-online-schema-change work? etc.

MySQL users commonly ask: Here's my table, what indexes do I need? Why aren't my indexes helping me? Don't indexes cause overhead? This talk gives you some practical answers, with a step by step method for finding the queries you need to optimize, and choosing the best indexes for them.