Classify a latency measurement
Monitoring dashboards colour-code every request by how long it took. Bucket the latency into a human-readable band.
- Under 250 ms is "fast".
- Under 1000 ms is "normal".
- Under 3000 ms is "slow".
- Anything at or above 3000 ms is "timeout".
latencyBand(latencyMs: int) → string
Go needs a compiler and Drill does not host one yet, so this page is the reference rather than an exercise: the problem, worked examples, and the solution in full. To type it out, the same problem runs in Python.
Where you start
func latencyBand(latencyMs int) string {
}Worked examples
| Call | Result |
|---|---|
latencyBand(0) | "fast" |
latencyBand(100) | "fast" |
latencyBand(250) | "normal" |
latencyBand(999) | "normal" |
Hint
Check the thresholds from smallest to largest.
Reference solution in Go
func latencyBand(latencyMs int) string {
if latencyMs < 250 {
return "fast"
}
if latencyMs < 1000 {
return "normal"
}
if latencyMs < 3000 {
return "slow"
}
return "timeout"
}