Use database signals and Clojure service metrics to find index problems before they become production latency incidents.
This section bridges the chapter overview and the detailed lessons below. For Java engineers, the practical question is how to handle index monitoring and performance analysis in Clojure code at the database boundary.
| Review focus | What to check |
|---|---|
| Query plans | Confirm the intended index is actually used. |
| Latency | Correlate database behavior with service response time. |
| Regression checks | Test important query shapes after model changes. |
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.