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Mastering FastAPI Background Tasks: Real‑World Patterns, Testing, and When to Reach for Celery
Introduction If you’ve built a FastAPI endpoint that needs to send a confirmation email, generate a PDF, or kick off a long‑running data import, you p…
FastAPI WebSockets: Production-Ready Setup and Scaling
FastAPI websockets let you push data to a client the moment it changes, without the overhead of polling. In a few lines you can expose a bidirectional…
React Native + Expo JWT Auth with FastAPI — A Complete Working Example
Most FastAPI JWT tutorials stop at "here's how you issue a token" and never cover the parts that actually break in production: where to store the toke…
Building Role-Based Student, Teacher, and Admin Experiences in EchoEd
A role-based product should involve more than hiding navigation links. Students, teachers, and platform administrators have different goals, data need…
I built an AI Neuro-Coach on FastAPI — here's what 60 cognitive trainers taught me about attention
Two years ago I sat down with a stack of research on cognitive training and asked a stupid question: what if the twenty-year clinical protocol we ran …
Designing first PRs that do not require a local environment
A "good first issue" is not actually beginner-friendly if a contributor must install a mobile app, an API, two speech engines, and model files before …
Did you ever face "stale singleton httpx connection" and "cold-start connection problem" problem, Well I did tonight.
It is been while I am learning and build around FastAPI. So there is a project where I was thinking how to add this new feature over exiting one. Like…
Introducing Aquilia
Been working on this for a while and it's finally time to share it properly. Aquilia is a Python web framework built async-native from the ground up. …
I shipped an unauthenticated RCE in my own port scanner — here's the whole chain, and how I killed it
I built a web front end for an Nmap-based port scanner: a FastAPI backend, a React dashboard, background scan jobs, a plugin system, the works. It ran…
Stop Overtraining: Build an AI Agent to Auto-Sync Your Fitness Plan with Your Heart Rate (LangGraph + Notion)
We’ve all been there. You have a "Leg Day" scheduled in your Notion database, but you woke up feeling like a truck hit you. Your Apple Watch says your…
I Built 4 FastAPI Projects in 2 Weeks — Here's What I Wish I Knew Before Starting
I just spent two weeks building 4 FastAPI backends back to back. REST API, web scraper + dashboard, React admin panel, AI workbench with CrewAI. 134 P…
I built UserHarbor — a framework-agnostic user management library for Python
While working on a SaaS application recently, I once again had to implement the same user account flow: registration login sessions email verification…
How I Built a Free Online Image & PDF Processing Platform with Vue 3 + FastAPI
How I Built a Free Online Image & PDF Processing Platform with Vue 3 + FastAPI I was tired of online file tools that watermarked my output, forced…
Shifting Left: How TDD Became the Foundation of SokoFlow's Core Engine
SokoFlow Build Log — Month 1 of 4 Last semester I set out on a new strategic plan to level up my software development skills through deliberate, proje…
I built a Python ORM with a Rust engine — here's how the GIL, PyO3, and asyncio actually cooperate
I like Tortoise ORM. Django-style models, async-first, clean. But I wanted more speed on read-heavy paths without reaching for SQLAlchemy, so I built …
Analyzing and Troubleshooting Bottlenecks in FastAPI: Optimizing Auth Flow, Cryptography, and Data Serialization
This article is intended for those who, like me, are interested in profiling and performance optimization. Key Takeaways (TL;DR): Offload CPU-bound cr…
FastAPI Crash Course: Build a CRUD REST API in ~40 Lines of Python
I spend most of my days writing Java and Kotlin for FinTech systems at scale. But every now and then, Python pulls me back in — and FastAPI is exactly…
FastAPI doesn't speak your users' language. Here's how to fix that.
Most FastAPI tutorials end at "it works in English." But the moment you ship to users in Germany, Brazil, or Japan, you realize FastAPI has no built-i…
"You code. We cloud." — Why the Cleverest FastAPI Hosting Headline Still Misses
There's a headline pattern that feels like sharp marketing writing but quietly costs conversions. "You code. We cloud." It's clever. The parallel stru…
I extracted a government's entire budget from a 625-page PDF in 4 seconds
Liberia's national budget is public. By law, it has to be. Every year the Ministry of Finance publishes it as a PDF on their website, hundreds of page…
From Pixels to Proteins: Building a Precise Dietary Analysis System with GPT-4o and SAM
Have you ever tried to track your calories by manually searching for "half-eaten avocado toast" in a database? It’s a nightmare. While basic AI Comput…
API Design Patterns for Cloudflare Workers: Minimal, Secure, Fast
API Design Patterns for Cloudflare Workers: Minimal, Secure, Fast I've built APIs on every platform—traditional servers, Lambda, containers. But Cloud…
I Built a Self-Hosted Competitor Price Monitor Because SaaS Pricing Is Out of Control
I Built a Self-Hosted Competitor Price Monitor Because SaaS Pricing Is Out of Control The Problem I run a small online store. To stay competitive, I n…
FastAPI for AI Engineers - Part 6: JWT Authentication in FastAPI
In the previous article, we explored the concepts of Authentication and Authorization. We learned that: Authentication answers "Who are you?" Authoriz…
FastAPI for AI Engineers - Part 5: Authentication vs Authorization (And Why Most Beginners Confuse Them)
In the previous article, we explored how Pydantic validates data before it enters our application. For example, if an API expects a temperature value,…
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…
FastAPI for AI Engineers - Part 4: Stop Bad Data Before It Breaks Your API (Pydantic and Data Validation)
In the previous article, we connected our FastAPI application to a database using SQLite and SQLAlchemy. We also used classes like: class StudentCreat…
Same PRD, four stacks, zero LLM calls — and EU AI Act Annex IV from the same spec
Last month I published spec-driven development across NestJS, Go, Spring Boot, Laravel, and Rust . This follow-up narrows to the four stable web stack…
Building an AI Content Studio with Angular, FastAPI, and LangGraph
TITLE: Building an AI Content Studio with Angular, FastAPI, and LangGraph INTRODUCTION: Combining an Angular frontend, a FastAPI backend, and LangGrap…