Latency

The delay between starting an operation and getting its result back, typically measured in milliseconds for a single request.

📌 Example: The gap between clicking a button and seeing a result.

🛠 In practice: Percentiles (p50, p95, p99) matter more than the average here, since a handful of slow outlier requests can hide behind an otherwise good average.

• often confused with Throughput
• trade-off with Throughput