Thanks for the warning.
I nearly made the mistake of merging Akka into a codebase recently; fortunately I double-checked the license and noticed it was the bullshit BUSL and it would have potentially cost my employer tens of thousands of dollars a year [1]. I ended up switching everything to Vert.x, but I really hate how normalized these ostensibly open source projects are sneaking scary expensive licenses into things now.
[1] Yes I'm aware of Pekko now, and my stuff probably would have worked with Pekko, but I didn't really want to deal with something that by design is 3 years out of date.
>it was the bullshit BUSL
I didn't know the licence and had a look, but I don't see what is bullshit with it. It's not a classical open source licence, but pretty close and much better than closed source
> and it would have potentially cost my employer tens of thousands of dollars a year
If your employer is not providing its software open source, there is nothing shocking to have to pay for the software used
IMO, you made a good decision ditching akka. We have an akka app before the BUSL and it is a PITA to maintain.
Vert.x and other frameworks are far better and easier for most devs to grok.