clacke@lucasmz Redis was under a permissive Open Source license that doesn't require recipients of code or binaries to provide it under the same terms to their recipients, it's not Copyleft.
The company received code from contributors under these terms and can do mostly what they like, redistribute derivatives under any terms, they're only required to retain copyright notices.
At a first glance at the PR I'm not sure they even followed that minimal requirement of retaining copyright notices. Some comments are protesting that they didn't.
All GNU social JP content and data are available under the