[zmmmmm]

Wow - thanks for taking the time to put those down.

Some of those I consider advantages - polyglot is the whole reason I looked into it, Groovy is the main language the app I'd be integrating it into is written in, callbacks are the mainstay of many other frameworks (try writing anything in Node.js without a callback!).

That the clustering is poorly designed is probably not an issue in itself since in my case it's a web server embedded in another app, but it's a concern that the framework isn't well thought out and I don't like that (it sounds like) the whole thing is heavily entangled with Hazelcast (which I have no need for, or interest in).

Thanks again for writing down your thoughts!

[eip]

You're most welcome.

> try writing anything in Node.js without a callback!

I wouldn't even try writing anything in Node. Server side javascript is not an option I would consider. http://www.youtube.com/watch?v=bzkRVzciAZg

Hazelcast on it's own is pretty useful if you need a distributed data grid in Java although it's not without its quirks. Unfortunately it's much less useful in Vertx because of the classloaders.

Callbacks as an antipattern is one of the main points of this HN post.