All posts tagged with "python"
How we built a small Python smoke test tool for a safety-critical alarm backend: a 300-line harness, one package per feature, blocker ordering, honest SKIPs, simulators, and the regression it caught.
A real migration from a pool of RQ worker processes to a single asyncio job engine: leases instead of a coordinator, batching instead of one request per job, the MySQL deadlock it caused, and load-test numbers.
A real Flask to FastAPI migration of a production service with REST and WebSocket: the phased plan, keeping the API contract identical, sync vs async handlers, WebSocket pitfalls, and the load-test results.
A practical Django 5.2 to 6.0 upgrade of a production API: why tests came before the upgrade, what DRF 3.17 dropped, a migration drift check, and how we pruned 25 unused packages along the way.
A practical guide to migrating Python code from ThreadPoolExecutor to asyncio. Learn when to migrate, step-by-step refactoring patterns, common pitfalls, and how to handle blocking code that can't be made async.
Real senior Python interview questions from a top outsourcing company in Vietnam — covering data structures, memory management, async concurrency, database optimization, and code quality.
Learn how to design and build ingestion APIs for IoT systems — handling high-throughput device data, batching, validation, backpressure, and storage strategies with practical examples.
Learn how to design object-oriented systems that are maintainable, flexible, and scalable. Master CRC cards, GRASP patterns, coupling and cohesion, responsibility-driven design, and practical design heuristics with examples in TypeScript, Python, and Java.
A practical guide to writing unit tests that help rather than hinder. Learn the AAA pattern, isolation principles, naming conventions, and when to mock — with real code examples.
Master the Observer, Command, and State behavioral design patterns with TypeScript, Python, and Java examples. Learn event-driven systems, undo/redo mechanics, and state machine design to complete the OOP & Design Patterns series.