Vishnu Balachandran

Blog

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.

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2 articles

Event-Driven Pricing and Billing at 2M+ Transactions a Day

Architecting a corporate pricing and billing platform where the number has to be reproducible in front of an auditor a year later: why the pricing engine is a Kafka consumer instead of a service you call, how the command and query sides split, and what partitioning actually buys you.

Sep 22, 2026 By Vishnu Balachandran Banking & FintechSystem DesignKafkaJava & SpringAI Engineering
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Streaming Pipelines for Banking Billing and Payments: Kafka, NiFi and Ignite

Banking data arrives as files on somebody else's schedule and has to be processed as a stream with money-grade correctness. Why the ingest tool and the event backbone are different tools, and what a distributed cache is genuinely for.

Sep 11, 2026 By Vishnu Balachandran KafkaData EngineeringBanking & FintechDistributed SystemsSystem Design
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