Anyone else find it ironic that this post is about moving from Node to Ruby in order to produce the admin interface to a Java hosting service? (This was a blog post written by "Jelastic" devs, who make a Java PaaS product).
We seem to be seeing more of this "don't eat your own dogfood" approach to software development lately. The other example that comes to mind is the Play Framework, written in Python and also targeted to Java devs.
I see what you mean by ironic, but it might be a bit less ironic when you consider the history of the name "JavaScript." Its original market positioning was as a lightweight complement to the heavier Java. Now we have other languages serving in that capacity as well: Python, Ruby, Scala, etc.
I don't know if there will someday be a language that is as easy to work in as a Python or Ruby for simpler programs but which lets you get (almost) as fast and fine-grained as C as your features stabilize and you start to optimize, but while we're waiting for Godot, it's not too ironic to use different tools for different projects, even if the project relates to one language in particular.
(And I don't know why you were downvoted for this. Sheesh, downvoters.... I'm contradicting you a little with my post, but I see no reason why you shouldn't say what you think. So, after contradicting you, I'll now go and cancel your downvote with my upvote. How's that for irony?)
>I don't know if there will someday be a language that is as easy to work in as a Python or Ruby for simpler programs but which lets you get (almost) as fast and fine-grained as C as your features stabilize and you start to optimize
Have you looked in to Cython? It seems like it tries to do what you wrote.
"The Cython language is a superset of the Python language that additionally supports calling C functions and declaring C types on variables and class attributes. This allows the compiler to generate very efficient C code from Cython code. The C code is generated once and then compiles with all major C/C++ compilers in CPython 2.4 and later, including Python 3.x. PyPy support is work in progress and is mostly usable in recent developer versions."
The latest Gevent dev uses libev (same as node.js) I'm curious to know how Cython and the new Gevent will perform vs the alternatives.
Only the CLI utility in Play used Python, and the newest version has replaced this dependency with Scala/SBT instead. I imagine the original reason for using Python for the CLI was because it's pretty damn easy to do that in Python.
Python is great for that sort of thing - but there do exist CLI helper libraries for Java in Apache Commons that make it almost as nice. It's just wierd to me to make development tooling for a langage in a different language - and indeed, if you find yourself doing this you might want to ask yourself why. (Of course there's a clear market reason - the hosted Ruby on Rails market is locked up by Heroku, but the hosted Java market, apart from a subset of JEE supported by GAE, doesn't even exist.)
We seem to be seeing more of this "don't eat your own dogfood" approach to software development lately. The other example that comes to mind is the Play Framework, written in Python and also targeted to Java devs.