Integrating the most suitable highly available multi-master, non clustered, freely accessible relational database management system (RDBMS) solution for large scale environments is a challenging task; it resembles evaluating marathon champions trained by different olympic coaches. This presentation will show the analogies and differences of MySQL Group Replication and PostgreSQL Bi-Directional Replication (BDR), two freely accessible and highly-available multi master non clustered RDBMS products that have been successfully employed in large scale environments requiring high availability. Both scenarios have demonstrated, through validated prototypes, to be successful, satisfying data integrity, reliability, and scalability with slightly different strategies and different upcoming pathways.
