Design caching around data freshness, invalidation, latency goals, and failure behavior in Clojure NoSQL systems.
This section bridges the chapter overview and the detailed lessons below. For Java engineers, the practical question is how to handle caching strategy for Clojure NoSQL applications in Clojure code at the database boundary.
| Review focus | What to check |
|---|---|
| Freshness | Define acceptable staleness before adding a cache. |
| Invalidation | Make update and eviction rules testable. |
| Failure mode | Know whether cache failure should degrade or fail the request. |
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.