High-throughput messaging platform
2026 · LivenShort message service center component deployed to Core IMS infrastructure, sustaining ~70K req/min in production, and tested for ~300K req/min in internal environment.
300K req/min
Problem
Register subscribers and forward SMS traffic at high volume, while ensuring interoperability with multiple mobile network operators though different protocols. It was designed around an asynchronous pub/sub architecture with Redis-based caching for low-latency lookups
Contributions
- Designed the initial architecture and continued evolving it as the system matured.
- Led a team of 8 engineers to deliver the project, including technical reviews and removing delivery blockers.
- Translated standardized requirements and specific business needs into technical specifications for implementation and documentation.
- Maintained high test coverage with unit tests and integration pipelines using Testcontainers to validate communication between components in realistic scenarios.
- Set up the load testing and profiling environment, ran performance tests, reported results, and proposed improvements to validate production readiness.
- Carefully improved application performance, including analyzing CPU bound versus I O bound workloads and moving non critical operations to asynchronous processing to optimize single threaded performance on critical request paths.
Stack
- Node.js & TypeScript
- Postgres
- Redis
- Prometheus
- RabbitMQ
- Grafana
- Testcontainers
