Building a Notification Service That Scales
Notifications look like a small feature until you operate one at scale. Then you discover that the humble "we just send the customer an email" requirement is...
12 min781Read →
Tagged #events
5 articles tagged #events.
The Outbox Pattern for Reliable Events
Every distributed system I have built in fintech eventually runs into the same uncomfortable question: how do you change your database and tell the rest of the...
10 min887Read →
Designing Idempotent Event Consumers
Every distributed payments platform I have built eventually arrives at the same uncomfortable truth: messages get delivered more than once. Not occasionally,...
12 min485Read →
When to Use a Message Queue, and When Not To
Few pieces of infrastructure get reached for as reflexively as the message queue. Somewhere in the lifecycle of every growing system, an engineer looks at a...
12 min1001Read →
Event-Driven Architecture for Cross-Border Payments: A Practical Primer
Cross-border payments are a sequence of steps that happen at different speeds, controlled by different parties, any of which can fail independently and at the...
5 min936Read →