--- title: "TechKis (@techkis) | Hashnode" description: "Engineering Intelligent Systems. Read the latest articles by TechKis on Hashnode." url: "https://hashnode.com/@techkis" --- @techkis # TechKis @techkis · Delhi, India · Joined May 2026 Engineering Intelligent Systems [Website](https://techkis.tech/) ### [JWT vs Sessions — The Part Nobody Tells You Until It's in Production](https://blogs.techkis.tech/jwt-vs-sessions-what-nobody-tells-you?utm_source=hashnode&utm_medium=feed) JWTs are stateless and fast — but you cannot revoke one. Here's what that costs in production, and when a session cookie is the better call 10 min read · [blogs.techkis.tech](https://blogs.techkis.tech/jwt-vs-sessions-what-nobody-tells-you?utm_source=hashnode&utm_medium=feed) [Jul 22](https://hashnode.com/posts/jwt-vs-sessions-what-nobody-tells-you/6a6057af5ff3d0b52a2472ee) ### [You Don't Need Redis, Elasticsearch and Kafka Yet — Postgres Does All Three](https://blogs.techkis.tech/you-don-t-need-redis-elasticsearch-and-kafka-yet-postgres-does-all-three?utm_source=hashnode&utm_medium=feed) Most teams add six datastores before they need one. What Postgres already does for caching, search, queues and JSON — and when to actually split. 12 min read · [blogs.techkis.tech](https://blogs.techkis.tech/you-don-t-need-redis-elasticsearch-and-kafka-yet-postgres-does-all-three?utm_source=hashnode&utm_medium=feed) [Jul 22](https://hashnode.com/posts/you-don-t-need-redis-elasticsearch-and-kafka-yet-postgres-does-all-three/6a6055d357f58982e8da71a2) ### [Your API Is Slow and It's Probably N+1 Queries](https://blogs.techkis.tech/n-plus-1-queries-slow-api?utm_source=hashnode&utm_medium=feed) Your list endpoint runs 51 queries where 2 would do. What an N+1 actually is, why it survives code review, and how to fix it with eager loading. 11 min read · [blogs.techkis.tech](https://blogs.techkis.tech/n-plus-1-queries-slow-api?utm_source=hashnode&utm_medium=feed) [Jul 22](https://hashnode.com/posts/n-plus-1-queries-slow-api/6a605446d28d1d7c46c7a0fc) ### [Your Docker Image Is 1.2GB. Here's the 180MB Version.](https://blogs.techkis.tech/your-docker-image-is-1-2gb-here-s-the-180mb-version?utm_source=hashnode&utm_medium=feed) Most Docker images are huge for three fixable reasons: no multi-stage build, a fat base image, no .dockerignore. Here's the fix, step by step. 8 min read · [blogs.techkis.tech](https://blogs.techkis.tech/your-docker-image-is-1-2gb-here-s-the-180mb-version?utm_source=hashnode&utm_medium=feed) [Jul 21](https://hashnode.com/posts/your-docker-image-is-1-2gb-here-s-the-180mb-version/6a5f9dd9e587ae3dc5470697) ### [Why Full-Stack Developers Are Becoming AI Workflow Engineers](https://blogs.techkis.tech/why-full-stack-developers-are-becoming-ai-workflow-engineers?utm_source=hashnode&utm_medium=feed) Can AI replace software developers? Explore how AI coding tools are changing software engineering and what the future means for developers. 4 min read · [blogs.techkis.tech](https://blogs.techkis.tech/why-full-stack-developers-are-becoming-ai-workflow-engineers?utm_source=hashnode&utm_medium=feed) [Jun 29](https://hashnode.com/posts/why-full-stack-developers-are-becoming-ai-workflow-engineers/6a42aa29a55b092e207ff52f)