Understand why scale, distribution, and availability pressures pushed many systems beyond traditional relational designs.
This section bridges the chapter overview and the detailed lessons below. For Java engineers, the practical question is how to handle big data and scalability pressures behind NoSQL in Clojure code at the database boundary.
| Review focus | What to check |
|---|---|
| Volume | Large datasets change storage and indexing decisions. |
| Velocity | High write rates affect consistency and partitioning. |
| Availability | Distributed systems force explicit trade-offs. |
Use the child lessons to move from concept to implementation. The section goal is to make the trade-off visible before the code hardens around a database assumption.