In the last 24 months, MySQL replication speed has improved a lot thanks to implementing parallel replication. MySQL and MariaDB have different types of parallel replication; in this talk, I present in detail the different implementations, with their limitations and the corresponding tuning parameters (covering MySQL 5.6, MariaDB 10.0, MariaDB 10.1 and MySQL 5.7). I also present benchmark results from real Booking.com workloads. Finally, I discuss some deployments at Booking.com that benefits from parallel replication speed improvements.