Running multiple Nubanks at once
summary
Nubank describes a microservices platform running >90% Clojure with Datomic for eventful persistence and Kafka for async pipes, split into 11 shards plus a global and monitor cluster so customer data pins to one shard forever. Shards migrate from EC2 to Kubernetes and operate as 12 Kubernetes clusters in production with blue/green via Route53 weighted DNS for zero‑downtime cutovers. Tooling includes GoCD pipelines, a Clojure monorepo called Nimbus, a custom CLI, and monitoring with Prometheus Thanos and Grafana.
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chapters (8)
- 0:00Introduction and agenda
- 3:27Text stack microservices architecture
- 8:27Sharding at Nubank
- 15:02Immutable infrastructure
- 17:54Blue-green deployments
- 21:50Engineering tooling
- 26:01Monitoring and observability
- 29:20Q&A
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