Play: Lightweight Java-based framework, with Scala support available as an extra. very good for rapid prototyping, fast-feedback-loop kind of work. Embeds the compiler, so you just edit source code in place and pages get immediately updated. Learning curve is shallow. Wicket: Stateful Java-based framework, with Scala support available as an extra. Shallower learning curve into … Read more
If you are coming from a MVC background then Play will feel the most familiar. Lift is not MVC and it takes some time to wrap your head around it. There is no reason that you can’t use Scala with a Java-based framework like Jersey, Spring MVC, Dropwizard, Restlet, RESTEasy, etc. Or you could use … Read more
From this post: This exception occurred for one simple reason : the permgenspace is where class properties, such as methods, fields, annotations, and also static variables, etc. are stored in the Java VM, but this space has the particularity to not being cleaned by the garbage collector. So if your webapp uses or creates a … Read more
Posting this after spending a week or two with Lift doesn’t really serve anybody’s interests. However, I want to spend some time correcting some mistakes and mis-perceptions. For the security I don’t think that is the job of the framework. You’re dead wrong. Security is the job of the framework. It’s critical that security is … Read more
I’m currently doing most of my things in Scala right now. (I should mention that I think that Scala is the best thing since the invention of the wheel some time ago. 😀 ) In my humble opinion it is the only language which truly allows people to choose the best approach to a task … Read more
This is the most comprehensive comparison I have seen so far: http://doc.akka.io/docs/misc/Comparison_between_4_actor_frameworks.pdf via http://klangism.tumblr.com/post/2497057136/all-actors-in-scala-compared
I’m currently working on a series of projects in lift, so I’ll give my personal experiences. Its a very capable framework – and I find it makes lighter work of application development than the equivalent in rails or django. However, you will need a reasonable understanding of scala in order to get started on sophisticated … Read more
Lift’s approach to scalability is within a single machine. Scaling across machines is a larger, tougher topic. The short answer there is: Scala and Lift don’t do anything to either help or hinder horizontal scaling. As far as actors within a single machine, Lift achieves better scalability because a single instance can handle more concurrent … Read more
You are using Lift 1.0’s JsCmd, which produces JSON with single-quoted strings and attempting to parse it with scala’s parser, which only supports double-quoted strings. It is important to realize that there are multiple definitions for JSON. Are single-quoted strings valid in JSON? They are according to ECMAScript 5th Ed They are not according to … Read more
OK, after my colleague mentioned to me, that he encountered this secret incantation in the Programming in Scala book, I did a search in my copy and found it described in Section 8.8 Repeated parameters. (Though you need to search with space between the colon and underscore :-/ ) There is a one sentence to … Read more