This is NOT a tutorial. This is a job-ready backend training project designed to teach you how to build production systems with PostgreSQL and Python.

If VS Code freezes on open, the notebook is often too heavy to render because outputs are saved inside the .ipynb (dataframes, logs, plots, HTML). Clearing outputs reduces the file to cells only, ...

This project provides a complete, step-by-step guide for setting up LangGraph's dual persistence system. It covers checkpointers (which save graph execution state so conversations can be paused, ...