When you just need to inspect a webhook before writing code
Webhooks are usually discussed as something your application should process automatically. A payment provider sends an event. A Git hosting service no…
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Event-Driven Algos: Mastering Webhooks and Order Lifecycle Event Triggers
In our previous article, we tackled low-latency data ingestion by architecting high-performance WebSocket streaming clients. Sockets are perfect for c…
The Freebuff Paradox: Elite Code Critic, Terrible Laravel Programmer
When you're building a complex backend system—like an enterprise-grade Point of Sales (POS) API using Laravel with a Modular Monolith architecture and…
REST API Design: Building APIs That Developers Love (2026)
REST API Design: Building APIs That Developers Love (2026) A great API is one that developers enjoy using. It's intuitive, consistent, well-documented…
System Design - 13. Message Queues Explained: Why LinkedIn Built Kafka and Changed Async Communication Forever
Message Queues Explained: Why LinkedIn Built Kafka and Changed Async Communication Forever Covers: Point-to-Point vs Pub-Sub, Kafka Internals, Deliver…
Building Adal: predictable webhook delivery without black boxes
Hi DEV community, I'm Yuriy, a fullstack developer and DevOps engineer with 10+ years of experience. I'm currently building Adal — a webhook delivery …
How Database Inserts Work: WAL and Buffer Pools
Quick Answer: When you insert data into a database, it doesn't immediately write to the main data table on disk. Instead, it caches the data in a RAM-…
I Built My Own API Gateway in Rust — Here's What I Learned
Every backend project I've worked on eventually hits the same wall. You start clean — one service, simple routes, everything works. Then slowly the re…
Inngest + Next.js: The Complete Guide (2026)
Serverless functions have a time limit. Vercel gives you 60 seconds on Pro. None of that is enough to send a welcome email sequence, process an upload…
Debugging and Eliminating Invisible Memory Leaks in Node.js Event Loops
When building microservices or background worker processes that are meant to run continuously for months at a time, memory management becomes critical…
Stop Fake Webhooks: Master HMAC Signatures in Laravel 🛡️
The Webhook Spoofing Vulnerability When engineering a B2B SaaS platform at Smart Tech Devs, relying on external services like Stripe, Shopify, or GitH…
Kafka в проде: как встроенное сжатие спасло кластер, когда retention не успевал чистить диск
Привет, Хабр! Меня зовут Павел, я ведущий разработчик. В этой статье расскажу про Kafka, consumer groups, lag, offset commit и встроенное сжатие сообщ…
Building a Metadata-Driven Runtime API Platform for Analytics Systems
Building a Metadata-Driven Runtime API Platform for Analytics Systems 1. Business Problem When I joined this project as a consultant, I almost said no…
Real-Time Notification Systems Are Harder Than Most Teams Expect
If you’ve ever thought, “It’s just a WebSocket event,” this article is for you. Notification systems look simple on the surface, but in production the…
The Hidden Machinery Behind Background Jobs
This will be a boring article today, but I wanted to write it after talking to a developer who genuinely believed background jobs are the key to faste…
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…
Classes, Enums, and Records Look Like Simple Language Features — Until You Realize They Define Your Entire Domain Model
Classes, Enums, and Records Look Like Simple Language Features — Until You Realize They Define Your Entire Domain Model Why Senior .NET Engineers Spen…
Error Handling in Node.js: Beyond Try/Catch (2026)
Error Handling in Node.js: Beyond Try/Catch (2026) Try/catch is just the beginning. Real-world error handling is about resilience, observability, and …
32/60 Days System Design Questions!
Your startup just got its first SOC 2 audit. The auditor asks: "Where are your database passwords, API keys, and service tokens stored?" Your senior e…
Beyond CRUD: 9 Backend Concepts Every Engineer Should Know to Build Scalable and Reliable Systems
When I started learning backend development, I thought the job was pretty straightforward. Build an API. Connect a database. Add authentication. Deplo…
Architecting Strict Sequential Ordering in a Concurrent World
Imagine you are building a cloud-native backend for a high-frequency trading platform or a core banking ledger. To ensure mathematical immutability an…
API Design for High-Throughput Systems: Rate Limiting, Versioning, Idempotency
Originally published at spectredev.xyz . Cross-posted here for the Dev.to community. Building APIs that hold up under real traffic takes more than fas…
Building a Real‑Time Notification System: Why a Simple Token Bucket Beats Fancy Alternatives
Building a Real‑Time Notification System: Why a Simple Token Bucket Beats Fancy Alternatives Quick context (why you're writing this) Honestly, I still…
Server-side dashboards with Querier UI
Querier UI lets you build server-side HTML dashboards powered by Chart.js directly from your Querier SQL queries — no JavaScript or frontend tooling r…
31/60 Days System Design Questions!
Your e-commerce platform just crossed 2M daily active users. 70% are in the US, 30% in Europe. Latency complaints are piling up from European users — …
I Built a MongoDB Migration Tool After One Bad Deploy
A few months ago I shipped a bad MongoDB migration. Classic mistake. I had run 3 migrations. The third one had a bug. I only wanted to rollback that m…
REST API Design: Building APIs That Developers Love (2026)
REST API Design: Building APIs That Developers Love (2026) A great API is one that developers enjoy using. Here's how to design RESTful APIs that are …
Durable Workflows on Postgres: What "You Don't Need Temporal" Actually Buys You
A DBOS blog post titled "Postgres is all you need for durable execution" reached the Hacker News front page this week (306 points, 132 comments). The …
Nest.js 12 preview is here!
The next major version of NestJS is officially knocking on our doors, and it brings one of the most anticipated architectural shifts in the Node.js ec…
Handling Time Zone Differences in Forex APIs: A Practical Developer’s Guide
Handling Time Zone Differences in Forex APIs: A Practical Developer’s Guide When I started building a multi-source forex data pipeline for a brokerage…