Blog — Vishnu Balachandran

Blog

Original writing on architecture, event-driven systems, reliability and engineering careers — drawn from production work on banking and high-traffic platforms, with the numbers and the trade-offs left in.

3 articles

Resilience4j, Kubernetes and Prometheus/Thanos: Engineering Toward 100% Resiliency

Circuit breaker states, autoscaling on breaker signals instead of raw CPU, Thanos for metrics that survive a Prometheus restart, and why Azure Monitor sees failures Resilience4j never will — from the work that took uptime from 99.5% to 99.95%.

Sep 21, 2026 By Vishnu Balachandran ResilienceCloud & KubernetesObservabilitySystem Design

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Progressive Delivery: Canary Releases, Feature Flags and A/B Testing

A deploy is not an event, it is a dial you turn. Building a canary framework with feature flags and A/B testing that cut deployment incidents 70% and doubled release velocity — and why the promotion gate matters more than the rollout mechanism.

Sep 16, 2026 By Vishnu Balachandran CI/CDCloud & KubernetesObservabilityResilience

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Real-Time Analytics with Kafka Streams, Elasticsearch and Kibana

Building analytics that answer questions about the last five minutes, not last night: windowing and the late-event problem, why the state store needs a changelog topic, and the split between what Kafka Streams should compute and what Elasticsearch should.

Sep 9, 2026 By Vishnu Balachandran KafkaData EngineeringObservabilityDistributed SystemsSystem Design

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