Low-latency microservices for Colombia's central bank

Mission-critical microservices went from 5 seconds to 100 milliseconds at 10,000 requests per second, with ACID guarantees that fixed data consistency.

−98%latency, 5 s to 100 ms at 10,000 req/s

Title block
Client	Banco de la República (with INDRA Colombia)
Period	2021 – 2023
Role	Technical lead of two teams
Domain	Banking
Stack	Java · Spring Cloud · WebFlux · Redis · MongoDB · GCP Pub/Sub · Apigee · AWS · DynamoDB

Notes

Two teams of four developers, Java 8 to 17, and a set of services that had to answer fast under load. We rebuilt the hot paths on WebFlux with Redis and MongoDB, resolved transactional integrity issues by enforcing ACID guarantees (90% better data consistency) and launched a Coding Dojo with Jenkins, SonarQube and Kafka so the quality bar outlived the project.

ProjectBanking