TRACE.001
BACKEND SYSTEMS
Mini Backend Latency Simulator
A visual trace of blocking requests versus async worker queues.
PERCEIVED LATENCY
Idle / ready to trace
LANE A
Blocking API
- Validate request80ms
- Run heavy processing2.35s
- Write result270ms
- Return response2.7s
User waits
0ms
LANE B
Async Queue + Worker
- Validate request70ms
- Enqueue job90ms
- Return 202 Accepted180ms
- Worker processes task2.35s
- Persist result270ms
User gets response in
0ms
QUEUE DEPTH
0
Blocking API
User waits ~2.7s
Async Queue + Worker
User gets response in ~180ms