AP Systems Explained: Why Stale Data Beats Downtime | HackerNoon

This is Part 3 of a 4-part series on the CAP Theorem and distributed systems trade-offs. In Part 2, we looked at CP Systems, datastores that would rather outright refuse requests than give the wrong answer. In this article, we look at AP Systems, which make the opposite decision: “I’d rather give you something than nothing”