Pill 9 · Three Questions

Quiz: Run the Checklist

These questions test whether you can apply the three-question framework to a new use case, not just recite the questions in order.

Quiz

Pill 9: Three Questions Before You Design a Streaming System

Question 1 of 6

Series complete!

You have reached the end of the Streaming Pills series. If you worked through all 10 pills and their quizzes, you now have a checklist you can run against any "should this be a stream?" question: whether it needs state, what its tolerance for late data is, and whether its clocks can be trusted.

The goal was never to memorize Flink APIs. It was to build the reasoning that tells you, for a specific use case, which side of the batch and streaming boundary it falls on, and why.