Binlog has to maintain the commit order of the changes made to the database. This performance penalty is caused by compute resource contention as the database has to do extra work to process binlog in addition to transactions, when binlog is enabled. MySQL binlog is versatile and used widely however, there is a performance penalty that many customers observe when they enable binlog. In this post we dive deep into the Aurora MySQL enhanced binlog, the common challenges it addresses and the innovation that went into making it possible. The enhanced binlog also improves database recovery time when binlog is enabled by up to 99% compared to recovery when community binlog is enabled. This in turn allows additional throughput on the same hardware. The enhanced binlog reduces the compute overhead of enabling binlog, which in certain cases can reach up to 50%, down to 13%. On May 22, 2023, AWS announced the availability of a new enhanced binlog on Aurora MySQL 3 (compatible with MySQL 8). The binlog is a record of the changes made to the database and is used for a variety of workloads such as disaster recovery using read replicas, change data capture for data streaming, event driven architectures, and analytics. A commonly used feature of the MySQL database engine is the binary log (binlog). Aurora has a history of innovating around database engines and the underlying infrastructure running the database, while maintaining compatibility. Aurora combines the performance and availability of traditional enterprise databases with the simplicity and cost-effectiveness of open-source databases. Amazon Aurora is a MySQL and PostgreSQL-compatible relational database built for the cloud.

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