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Jatin Bansal
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Hi, I'm Jatin

I build the backend of a crypto exchange. The parts that have to stay correct under load.

Engineering Lead at Pluang, building the crypto exchange, trading and investment platform. 7+ years in financial services, mostly distributed systems: Kafka, Redis, PostgreSQL, and event-driven microservices on the JVM.

This site is where I write down what broke, what held, and what I would do differently next time.

Works with
Java, Spring Boot, Kafka, Redis, PostgreSQL and event-driven services.

Writing

  1. Java Writing Event Loops with Java Virtual Threads A practical guide to writing small event loops in Java 21 and Java 25 using virtual threads, blocking queues, direct control flow, and graceful shutdown. Reading time: 7 minutes
  2. AI Context vs Prompt Engineering: The Evolution from Instructions to Intelligence Why context engineering is overtaking prompt engineering: what context rot is, and why managing what a model sees matters more than prompt wording. Reading time: 11 minutes
  3. Java StampedLock: How to Use Locks with Near Lock-Free Reads in Java How Java's StampedLock gives near lock-free reads with optimistic locking, why it suits virtual threads and read-heavy code, and how to use it safely. Reading time: 6 minutes
  4. Java Scaling PostgreSQL Databases with Spring Boot: A Journey into Application-Level Sharding How we scaled PostgreSQL to millions of inserts per hour with Spring Boot, combining table partitioning with application-level sharding across hosts. Reading time: 5 minutes