Raunak Gupta

DevOps engineer and technical writer with experience in cloud infrastructure, CI/CD pipelines, and system design. Passionate about making complex engineering topics accessible through clear, practical writing backed by real production experience.

4articles

Articles by Raunak Gupta

4 articles

Databases#sql#performance

Why Your Database Indexes Are Not Working (And How to Fix Them)

You added an index. Your query is still slow. This article covers the debugging mindset - why indexes fail in real systems, how to diagnose the problem, and how to fix it.

Raunak Gupta·Mar 22·30 min

System Design#rate-limiting#redis

How to Design a Rate Limiter That Actually Works at Scale

Rate limiting looks simple - until you deploy it across multiple servers and it starts failing silently. This article covers what breaks in production and how to fix it.

Raunak Gupta·Mar 22·28 min

System Design#caching#redis

Caching Strategies That Work (And When They Fail)

Caching improves performance - until it starts serving stale data or becomes your biggest bottleneck. This article covers the real decisions you'll face in production.

Raunak Gupta·Mar 22·32 min

System Design#aws#kafka

SQS vs Kafka: When to Use What in Real Systems

Both SQS and Kafka solve similar problems - until your system scales and the differences start to hurt. This article covers when each one breaks and how to make the right call.

Raunak Gupta·Mar 22·35 min