Integration / Apache Pulsar Interview questions
What is the difference between Slow, Very Slow, and Stalled transactions?
These three categories describe increasingly severe response-time problems AppDynamics detects for a Business Transaction, and each maps to a different snapshot trigger and typically a different severity of health rule violation.
| Category | Meaning |
| Slow | Response time exceeds baseline by a configured threshold, but the request still completes. |
| Very Slow | Response time exceeds a higher, more severe threshold above baseline; request still completes. |
| Stall | The request has run longer than the configured stall threshold and has not yet finished at all. |
A stall is treated differently from Slow/Very Slow because the outcome isn't known yet at detection time — the request might still finish (just very slowly) or it might be genuinely hung, so a stall snapshot is a signal to investigate whether something is deadlocked, blocked on I/O, or waiting on a resource that will never become available.
What distinguishes a Stall from a Very Slow transaction?
What might a stall indicate is happening in the application?
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