Nishant dev

Open to Work | Java + Golang Backend EngineerBuilding scalable microservices, fintech systems & high-performance APIs.Daily threads: System Design, Interviews, Go tips.Seeking Backend/SDE roles (India | Remote).DM your JD or reply! #OpenToWork #Java #Golang #hiring

Now Iam more careful. Not every method needs it. But removing it without understanding the boundary…is a silent risk. And in production… partial failure is the default. #SpringBoot #Java #SpringFramework #Microservices #100DaysOfCode

That is when it clicked. Without @Transactional, each DB call commits independently. So if something fails in between…there is no rollback. You don’t get failure. You get partial success Transactions don’t protect success. They protect you from partial failure.

⚠️ We removed @Transactional… nothing broke. That was the problem. It looked like a small cleanup. We had a method doing multiple DB operations. Someone asked: 👉 "Do we really need @Transactional here?" At first, it felt like a safe change. So we removed it.

⚠️ 3 Golden Rules: ✅ Always set a TTL (so crashed instances don't block forever) ✅ TTL must be < cron interval ✅ Use ATOMIC operations — never GET + SET (race condition!) #Go #Backend #DistributedSystems #DevTips #SoftwareEngineering

2️⃣ PostgreSQL Advisory Locks → No Redis needed → Uses pg_try_advisory_xact_lock() → Lock auto-releases when transaction ends 3️⃣ DB Table Lock → cron_locks table as coordination point → Great when you need an audit trail

🔒 Running multiple server instances? Don't let your cron job run on ALL of them! Here's how to ensure only ONE instance runs the job in #Golang 👇

Felt solid because I revised these exact topics last night Now waiting for feedback / next round. Will update! Grateful to hr for smooth process. #Paytm #BackendEngineer #InterviewExperience #Java #SpringBoot #SystemDesign #Microservices #NoidaJobs #JWT #Kafka #RateLimiting

Overall: Very practical & Paytm-relevant round — focused on Spring Boot internals, security (JWT), distributed systems (rate limiting, cron in multi-pod, messaging) & event-driven design. No heavy DSA or full LLD this time.

Just completed my #backend #Engineer #interview at @Paytm (@noida ) 45-minute Technical round done today (10th April 2026). Recruiter Sonia scheduled it super quick via Naukri. Round Flow: Started with “Tell me about yourself” + deep dive on my fintech projects at Saoirse .

Ek developer vibe code kar sakta hai, lekin agar ek vibe coder code karega to bugs hi generate karega 🫣 #golang #dev #java

🚀 Day 29/30: Interview Trick Before coding, repeat the question in your own words. Why? • buys thinking time • clarifies constraints • aligns with interviewer Great engineers debug the problem before touching the keyboard. #interviews #Day29

🚀 Day 28/30: Explaining Projects In interviews use P.A.R. Problem → what you solved Action → what you built Result → what changed Don’t just list tech stacks. Tell the engineering story. #career #softwareengineering #Day28