You chose Datomic for production, and now you carry the weight of your past decisions. Or you know the basics of Datomic but don't yet feel confident taking it there. This advanced follow-up to the Amazing Day of Datomic is about the problems that only surface at scale: a schema migration that won't apply, a query that was fast in dev and times out in prod, latency that spikes every time a new index is adopted, and a partitioning schema you have to choose up front, before the data can tell you what's right. We'll work against a Datomic Pro database, troubleshooting problems together. You'll leave able to read what your system is telling you, with a clear sense of where to look when something is slow or wrong, and the confidence to make decisions.

João Nascimento Mello

Mello is a software engineer at Nubank who has worked across different parts of the company, helping teams find good solutions to hard problems and maybe liking them a little too much. He is also a dad of two, so most of his time outside work is already taken – and whatever is left usually goes to rest.