Edit

TTL

Changing things in cache are given a time-to-live (TTL) of 24 hours by default. Changing things are artifacts for versions ending with -SNAPSHOT, Maven metadata files listing available versions, etc.

The most straightforward way of changing that consists in setting COURSIER_TTL in the environment. It's parsed with scala.concurrent.duration.Duration, so that things like 24 hours, 5 min, 10s, or 0s, are fine, and it accepts infinity (Inf) as a duration.

import scala.concurrent.duration.Duration

Duration("24 hours")
Duration("5 min")
Duration("10s")
Duration("0s")
Duration("Inf")