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Making a system highly available isn't just about adding redundancy
Written by Shubham Sethi - Senior Software Engineer
To mitigate the cascading impact of such failures, we implemented circuit breakers (CBs) using libraries like hystrix and resilience4j, which are configured to open up and return a default fallback response when error thresholds are breached. Minimal Performance Impact: The introduction of the lightweight Transact Proxy resulted in a negligible increase of ~4 ms in P50 latency at the API Gateway, ensuring system responsiveness remained intact. By addressing key challenges such as data consistency, traffic isolation, dynamic routing, and session stickiness, we’ve built a robust, fault-tolerant system that ensures seamless operations and minimizes user impact during outages.
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