Is it possible to speed up maven artifacts downloading?

Question

Unfortunately the maven initial build is very slow due to artifacts downloading
f.e. I\'ve tried to download the same jar using curl - it is 3 times faster!!!
Why? A

Answer 1

The key point of the question was missed in the answers above:

I've tried to download the same jar using curl - it is 3 times faster!!!

This means it is a software issue, mitigation by installing a local proxy or altering the snapshot policy in the settings.xml both come with extra work and potential side effects, such as snapshot dependencies not being updated.

The issue described by the question is maven not utilizing the available bandwidth, thus being slow. This issue was identified in https://issues.apache.org/jira/browse/WAGON-537 and is resolved since maven 3.6.1, see https://maven.apache.org/docs/3.6.1/release-notes.html and https://issues.apache.org/jira/browse/MNG-6591, respectively. There is thus no need to do anything else but update to the latest maven version.