Personal Diary API is a high-performance backend for a personal diary web application, implemented in Python using the FastAPI asynchronous framework. The server part provides a RESTful API for managing notes with a full set of CRUD operations

A curated guide to learning how to design large-scale systems. Includes Anki flashcards, study resources, and key concepts to help you prepare for system design interviews and build scalable applications.

A full-stack Python backend for simulating healthcare workflows — combines REST, gRPC, Kafka, and Spark in a clean, testable architecture. Designed for real-world API, data engineering, and cloud deployment demos.