Datomic plays a major role in enabling Nubank to scale to over 75 million customers. Across the company, there are more than 3,000 Datomic databases, with over 300 storing more than 10 billion datoms.
This talk explains Nubank's use of two features of Datomic to ensure that transactions and queries are as performative as they can be: io-stats, and query-stats.
The Operating Datomic at Scale talk also aims to show two experiments currently running at Nubank: tuning the memory index to reindex less often, severely reducing expenses with DynamoDB; and the use of ZGC as the garbage collector for JVMs running transactors.
10 май 2023
