2026-02-15

project 14: the system design documentation

scenario: you are handing over the project to a new engineer. the mission: create a high-level architecture diagram and a “runbook.”

tech: draw.io, markdown.
challenge: communication is the hardest engineering skill.
dev to prod:
1. create a diagram linking kafka, spark, s3, redshift, and airflow.
2. write a readme.md explaining how to recover if the kafka broker dies.
3. prod requirement: this is your interview “show and tell” artifact.