Building Dhrishti - Part 3: Testing on a Production Grade System
I was now done with the basic setup. However, during my time working at my startup, I have learnt to think about a project wearing multiple caps. One …
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When Kubernetes Isn't the Problem: Debugging External Dependencies in AKS
Introduction One of the most common mistakes during incident response is assuming Kubernetes is the problem simply because the application runs on Kub…
Defend External APIs: Redis Token Bucket in Laravel
The Silent Vendor Ban Danger When architecting a high-performance B2B SaaS platform at Smart Tech Devs, your system frequently depends on external thi…
How to Build a PostgreSQL Backed Job Queue in Go
When you build a web application, not every task should happen inside the user's request. Some work is slow. Some work can fail. Some work should happ…
Session Management, Rate Limiting & Caching using Redis
Modern distributed systems — whether fintech APIs, e-commerce platforms, or AI-powered services — share a fundamental challenge: every replica, micros…
Why We Accidentally Blocked Our Users: A Deep Dive into Idempotency in Distributed Systems
I learned one of my most important distributed-systems lessons the hard way. We were working on a payment flow connected to an external payment gatewa…
Healthchecks в Docker Compose для Laravel: как сделать так, чтобы сервисы запускались в правильном порядке
Если вы хоть раз поднимали Laravel-проект в Docker Compose, наверняка сталкивались с ситуацией: контейнер с приложением стартует раньше, чем база данн…
Building a Redis Clone in Go
1. Introduction To better understand how databases and network servers work internally, I built a Redis-inspired in-memory database in Go. This projec…
Why your .NET 8 API needs a cache layer — and how to build it right with Redis/Valkey and tag invalidation
Caching is one of those things that sounds optional until your database starts getting hammered at scale, your response times creep up, and you realis…
Real-Time APIs Are Simpler Than You Think: Redis, Lua, and 4k Updates/sec
1. Intro — The Problem We Actually Had Building real-time systems is often presented as a distributed systems problem. Kafka, stream processors, event…
Scaling WebSocket
WebSocket provides low-latency, bidirectional communication between clients and servers. It is a widely used solution for building real-time systems. …
I Built an Online Multiplayer Ludo Game
So, this year I made a few resolutions — and sure, no one keeps to resolutions, but I decided to at least keep these two: first was no more tutorials,…
Filling a maintainer's "Help needed": shipping a Next.js 16 Redis cache handler
Filling a maintainer's "Help needed": shipping a Next.js 16 Redis cache handler Next.js 16 split caching into two distinct handler interfaces: cacheHa…
A Framework Is Not a Platform
For most of the time we have been writing web applications, two different teams answered two different questions. The framework team decided what the …
Making It Fast: Caching, Hot Paths, and Avoiding DB Calls
The Auth Gateway sits in front of every authenticated request in the platform. Its latency isn't just its own latency — it's the floor for every servi…
5-Minute AI Jobs and Closed Tabs — Why We Built Replay-Then-Tail SSE
We had a feature in production where a single user request could run for five-plus minutes — fetch documents, chunk them, hit an LLM per chunk, synthe…