🔎 Building IncidentCopilot: Designing a Deterministic Log Correlation Engine
Milestone 4 of IncidentCopilot — an open-source, local-first AI DevOps Incident Copilot 📌 Introduction Logs are plentiful during outages — the chall…
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Counting OpenAI Tokens per Request in FastAPI — Without Touching My Use Cases
I'm rebuilding evorag , a Python retrieval service: it chunks documents, embeds them with OpenAI's text-embedding-3-small , stores vectors in Postgr…
Django vs FastAPI: Which Python Developer Should You Hire?
Django or FastAPI? Hiring managers ask this before they have written a single job description, and the honest answer is that the framework matters l…
Flag Risky Signups in Python by IP: Tor, Hosting and Known VPN Networks
A FastAPI/Flask recipe that turns IP traits into an allow / verify / review decision, without locking out real users. Why hard-blocking VPN users ba…
I Built a Bilingual "Mini-Uber" for My Dad's Escalade Business
I Built a Bilingual "Mini-Uber" for My Dad's Escalade Business My dad drives a Cadillac Escalade. He's licensed in California (TCP permit — the real…
Deadtrace: отправляем Vulture на пенсию
Новая реализация уже работает, а старая всё ещё лежит где-то в репозитории. Её провайдер зарегистрирован в контейнере, тесты продолжают вызывать ста…
This 3-Line Python Mistake Can Disable Your Entire API Authentication
Ever written a security check that looked perfectly reasonable... until you realized it could let everyone in ? Here's a tiny Python mistake that ca…
Clean Architecture in Python with FastAPI, FastStream, and Dishka
One business logic layer, two entry points: HTTP and RabbitMQ. Here is the backend template I built with FastAPI, FastStream, and Dishka. This walkt…
Error Tracking API Guide: Choose 4 FastAPI Django SaaS Rollback Checks
Choose a small error-tracking API when the rollback decision depends on searchable exception events, not on traces, replay, or a full monitoring sui…
Normalizing 30 Judges Without Lying About It: the maths, a counterintuitive k, and what I chose not to build
TL;DR. I built Rubrica , a self-hosted hackathon portal, for DOGFOOD 2026. The interesting part is not the feature list. It is a judging engine whos…
RecallDesk: Building the FastAPI Backend Behind an AI Support Memory System
RecallDesk: Building the FastAPI Backend Behind an AI Support Memory System In customer support applications, the frontend is where engineers intera…
Практический GitHub Actions: полноценный CI/CD для FastAPI + PostgreSQL
В этой статье будет разбираться написание GitHub Actions пайплайна на основе моего стенда cicd-practice на GitHub (подробно все можно посмотреть там…
Efficient FastAPI Learning: Avoiding Pitfalls in Async, Database, and Auth Integration
Introduction to FastAPI and Common Pitfalls FastAPI has emerged as a powerhouse for building high-performance web applications, thanks to its async…
FastAPI's new app.frontend() fixes a route-order bug in manual SPA serving
Put a FastAPI catch-all route above your API route by mistake and a request to /api/ping returns HTTP 200. The body is your single-page app's index.…
async def или def в FastAPI: как одна строчка делает сервис в 40 раз медленнее
В FastAPI можно объявить обработчик как async def , а можно как обычный def . Многие ставят async везде «потому что так быс…
A stored-XSS report we couldn't quite reproduce, and hardened anyway
A researcher named Dhruv emailed us to report a stored XSS path: someone attaches a PDF with embedded JavaScript to a support ticket in our helpdesk…
Как я собрал бота‑команду из 11 ИИ‑юристов и что под капотом пошло не так первым же смоук‑тестом
Полтора месяца назад мне пришла претензия на 44 тысячи рублей за фото восьмилетней давности на сайте нашего отеля — типичный «фотобанковский» иск с…
CVE-2026-48710 (BadHost): How a Malformed Host Header Bypasses Starlette Path Authorization
CVE-2026-48710 (BadHost): How a Malformed Host Header Bypasses Starlette Path Authorization Vulnerability overview CVE-2026-48710, tracked publicly…
Why FastAPI geolocation middleware is the wrong tool
Search for FastAPI geolocation middleware and you'll get the same answer every time: subclass BaseHTTPMiddleware , call an IP lookup API, stash the…
Context Engineering for Production AI Agents in 2026: Beyond Prompt Engineering and Basic RAG
Introduction Prompt engineering taught teams how to talk to models. Context engineering teaches teams how to build systems that give the model the r…
nginx silently rejects the new HTTP QUERY method
RFC 10008 went to Proposed Standard in June. It adds QUERY, a new HTTP method. Safe and idempotent like GET, but it carries a body like POST. On pap…
I Made Claude Code Prove Billing End-to-End Before I Let It Ship
I’ve been using coding agents for a while, but during the last release of a SaaS project I changed one thing about how I used them. I stopped defini…
FastMCP 3 4 migration: the breaking changes that compile
FastMCP 4 is GA. If you have an MCP server or client on fastmcp 3.x, you'll upgrade soon. Most of it is painless — FastMCP(...) , @mcp.tool , and mc…
1. What Is FastAPI?
What Is FastAPI FastAPI is a modern, high-performance web framework for building APIs with Python. It helps developers create backend services quick…
Fashion E-Commerce Store
When I started this project, the brief was simple to state and deceptively large to build: a full fashion e-commerce platform — product catalog, siz…
На что способен бесплатный Devin: тест на реальном проекте
Привет, Хабр! Меня зовут Завур, я фронтенд-разработчик в Selectel . Каждый день я работаю в привычной многим среде разработки VS Code. Однако в личн…
Мне 15. Мой сайт грузился две секунды, потому что каждый CSS-файл писал в базу данных
Сайт не сломан. Он открывается. В логах чисто, ошибок нет — просто ты кликаешь по вкладке и успеваешь заметить, что кликнул. Я померил: страница каб…
FastAPI and Node.js Property Incidents: 7-Field Error Schema for Request Correlation
Short answer: send normalized failures from every FastAPI and Node.js service to one capture endpoint, carry the same trace ID through the request p…
I Kept Burning API Credits Every Time I Ran My Test Suite — Here's How I Fixed It
I ran my test suite four times in a row one afternoon while debugging a flaky endpoint, and by the time I checked my OpenAI usage dashboard I'd burn…
Building a High-Performance Daily Ledger API: Asynchronous Concurrency & Data Validation with FastAPI
When designing modern backend microservices, two pillars dictate the reliability and speed of your application: strict data contracts and non-blocki…