Dependency Cache Savings Calculator
A few minutes saved per build adds up fast. See your monthly time and cost savings from caching dependencies.
Restoring a dependency cache instead of reinstalling from scratch shaves the same chunk of time off every single build. Multiply that by your daily build volume and it becomes real engineer-hours and real money each month. Enter your numbers to size the win.
A dependency cache restores node_modules, pip wheels, Go modules, or Cargo registries instead of re-downloading and rebuilding them every run. Latchkey keeps a warm cache close to the runner, so the "with cache" time stays low even on the first build of the day.
How the savings are calculated
- Minutes saved per build = uncached restore time - cached restore time.
- Builds per month = builds per day x 30.
- Minutes saved per month = per-build savings x monthly builds, converted to hours by dividing by 60.
- Dollars saved per month = monthly minutes saved x your per-minute rate.
The catch: a cold cache
These savings only land if the cache is actually warm when the build starts. On many setups the first build of the day, or a build on a fresh runner, misses the cache and pays full price. Latchkey keeps a warm cache close to the runner so the cached restore time stays low across builds, which is why the numbers above hold up in practice.