Production Performance¶
Measure the user-visible bottleneck, understand its resource mechanism, and prevent regression with budgets.
flowchart LR
J[Junior: measure] --> M[Middle: profile] --> S[Senior: saturation and contention] --> P[Professional: performance systems]
flowchart LR
Workload --> Latency --> Profile --> Bottleneck --> Change --> Benchmark --> Budget
| Level | Guide | You are done when |
|---|---|---|
| Junior | Measure before optimizing | You can build a repeatable baseline and identify a hotspot. |
| Middle | Use profiles and benchmarks | You can connect CPU, allocation, I/O, and contention to latency. |
| Senior | Protect performance under load | You can reason about queues, tails, concurrency, and budgets. |
| Professional | Operate performance capability | You can govern benchmarking, profiling, capacity, and regressions. |
Practice rule¶
State workload, metric, baseline, hypothesis, and success threshold before changing code.