What is Build Cache?
Stored output from a previous build that can be reused in the next one. It skips re-installing unchanged dependencies so deploys finish faster.
7 of 8 from cache · 3 min → 40 s
A build cache speeds up deploys by...
Write it in your own words in the app.
In real work
Make sure build cache is enabled. Unchanged dependencies should not be reinstalled on every deploy.
In the illustration
Deploy 2 starts: 7 unchanged crates slide straight off the cache shelf, only 1 changed crate goes through the install press, and the build timer stops early.
Builds on your deploy platform take nine minutes. Check what the build cache misses between deploys, then cache the dependency install and the framework build output.
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