Summary

In this chapter, we learned about the evolution of databases, how databases can be categorized based on various criteria, CAP theorem, and a brief introduction to CockroachDB. By now, you should also be familiar with database and processing models, what the CP, CA, and AP systems in CAP theorem offer, and the functional layers of CockroachDB.

In the next chapter, we will take a deep dive into CockroachDB's architecture and design concepts.