Karthik Appigatla has been working on various large scale data stores for a decade primarily focused on MySQL. Currently, he has been working for LinkedIn for the last 5 years. Prior to LinkedIn, he worked for Yahoo, Pythian and Percona where he was responsible for helping clients scale their databases.
He authored the MySQL 8 cookbook covering the new features and performance tuning of MySQL 8 - https://www.amazon.in/MySQL-8-Cookbook-Karthik-Appigatla-ebook/dp/B0753D434Q