Rabinarayan PatraEngineering full-stack
systems that ship.
I'm Rabinarayan Patra (Rabi), an SDE II at Amazon. Java and Spring Boot on the backend, React and Next.js up front, AWS underneath. Before Amazon I spent three years at ThoughtClan building reactive Spring WebFlux services for high-throughput financial systems. These days I write about what I hit in production: keeping data correct, APIs predictable, and services standing up when real traffic arrives.
- 5+
- Years experience
- 700M+
- Daily transactions
- 93
- Articles published
- 10+
- Clients shipped for
02 · Latest writing
Recent Writing
How to Implement Idempotency Keys in REST APIs the Right Way
Learn how to implement idempotency keys in a REST API so retried POSTs never double-charge: storage, response replay, 409 locking, fingerprinting, and TTL.
How to Access Your Local Dev Server From Your Phone
To open your local dev server to your phone, bind to 0.0.0.0 and use your machine's LAN IP, not localhost. Here is why 127.0.0.1 blocks it and how to fix it.
How to Lock OpenTofu State in S3 Without DynamoDB
Since OpenTofu 1.10, use_lockfile locks S3 state with conditional writes, no DynamoDB table. Here is how it works, the IAM policy, and a safe migration.
03 · Selected work
Featured Work
Open-source tools I built because I hit the problem myself, then cleaned up enough to share.
sanitizer-lib
A Java library that scrubs untrusted input from a single annotation, so XSS and injection never reach your database. Drops into Spring Boot and JPA without the extra wiring.
05 · Collaborations
Reach developers who build, not just browse.
If your product genuinely helps developers, I'll put it in front of the ones who read, build, and ship, not just scroll past. I only take collaborations I'd be glad to use myself.
## What I offer
- Sponsored blog posts & tutorials
- Product reviews & integrations
- Newsletter sponsorships
- Tool & SDK integrations
audience: developers, engineers
status: open
email: hello@rabinarayanpatra.com