I'm Pavan Rangani, a Senior Java Developer with over 9 years of professional experience designing and building enterprise-grade backend systems. I specialize in the Spring ecosystem (Spring Boot, Spring Cloud, Spring Security), distributed systems, microservices architecture, and cloud-native applications on AWS.
My day-to-day work involves shipping high-throughput REST APIs, integrating event-driven pipelines with Apache Kafka, designing resilient service meshes, and optimizing relational and NoSQL data stores. I've led modernization efforts that migrated legacy monoliths into containerized microservices on Docker and Kubernetes, reducing deployment cycles from weeks to hours.
What I write about
The tech blog on this site is where I share lessons learned in production — patterns that worked, anti-patterns that bit us, and the trade-offs behind real architectural decisions. Topics include:
- Spring Boot performance tuning, observability, and security hardening.
- Microservices design patterns: saga, CQRS, event sourcing, circuit breakers, idempotency.
- Apache Kafka producer/consumer tuning, exactly-once semantics, schema evolution.
- AWS deployment patterns — ECS, Lambda, RDS, S3, CloudFront, IAM least-privilege.
- Java internals — JVM tuning, garbage collection, concurrency, virtual threads (Project Loom).
- Pragmatic AI integration in backend services — RAG pipelines, embeddings, vector search.
Background
I hold a degree from Gujarat Technological University. Over the years I've worked across product startups and service companies, contributing to fintech, e-commerce, and SaaS platforms. I currently work with CODETAILOR and consult on Spring Boot architecture, code reviews, and microservices migrations.
Why this site exists
Most engineering content online either stays at toy-example depth or hides behind paywalls. I publish here because the lessons that actually move the needle — the gnarly debugging stories, the post-incident retrospectives, the "we tried X and it failed because Y" — deserve to be free and discoverable. Every article is original, written from firsthand experience, and refined over multiple drafts before it ships.
Get in touch
Email: pavanrangani@gmail.com
LinkedIn: @pavanrangani
GitHub: pavan-rangani
Or use the contact form for project inquiries, speaking requests, or article suggestions.