We have different databases, different communication methods, caches, and more. How can we get anything to agree on the state of anything?

Building reliable communication and agreements between systems is possible - but it requires careful design and application of well-established patterns.

In this session, we'll look at how to implement various consistency and transactional patterns, to support both real-time and async updates. We'll dive in to the inbox and outbox patterns to support transactional messaging. We'll also look at long-running transaction patterns such as sagas and process managers to manage agreements between systems. Finally, we'll look at a full working example that crosses databases, APIs, messaging, and more.