Dev

API Latency Napkin

Rough per-request latency and worker busy-fraction estimate.

Runs in this tab. We do not upload what you paste.

Capacity napkin math for API design conversations — not a load test. For production SLOs, engage Myrafy.

RTT (ms)

Network hops

Serialize / app (ms)

DB (ms)

Downstream (ms)

Target RPS

Estimate

Network40.0 ms

Server work60.0 ms

Per request100.0 ms

Worker busy fraction5.00

May need concurrency / caching (napkin)

How to use this

Paste or type into the fields above. Nothing leaves this tab.
Read the result, then copy it into your editor or ticket.
For production pipelines, use your normal toolchain. This page is for a fast check.

Rough per-request latency and worker busy-fraction estimate. Processing stays in your browser, so drafts, tokens, and configs are not sent to Myrafy.

We build production software under a written SOW. Typical estimate the next business day.