Skinny Framework – Rapid Development in Scala – @seratch #m3dev

What’s Skinny?

-  http://skinny-framework.org -  Under The MIT License -  “Scala on Rails” (actually Padrino style) -  Still only 6 months old, 186 stargazers -  1.0.0 will be out this week! -  Routings, CRUD template, Validation DSL,

ActiveRecord-like ORM, DB Migration, Assets compilers, Mail Sender and more

6 Strong Points

1.  Trouble-less Scala environment 2.  Mostly Rails-like conventions 3.  Simple but statically typed code 4.  Servlet level performance 5.  Suitable for replacing legacy systems 6.  Windows users as first-class citizens

1. Trouble-less Scala setup

-  Scala setup may be difficult for beginners -  Scala versions (2.9, 2.10, …) -  sbt versions (0.11, 0.12, 0.13 …) -  Fix sbt plugin deps -  Be aware of JVM PermGen options! -  Other tools? cs? g8?

-  Skinny requires only JDK, just unzip it

2. Rails-like conventions

-  Accessible for Rails users -  Recent other frameworks are also similar -  Less new/original concepts -  Coding style will be unified -  To avoid over engineering, KISS

3. Simple but statically typed

-  Looks simple but statically typed -  You can use IDE effectively -  Types are helpful when refactoring -  Types are helpful when reading code written by

other developers -  Compiler sometimes finds typo and bugs

4. Servlet level performance -  Skinny app is a Scalatra app -  TechEmpower’s Benchmarks -  http://www.techempower.com/benchmarks/

5. Replacing legacy systems

-  Useful reverse-scaffold -  CoC but configurable “Skinny Framework is much powerful for replacing in-house legacy apps.” - @Kuchitama

6. Windows ready

-  Skinny requires only JDK -  No native library deps unlike Rails -  CoffeeScript, LESS, React JSX and Scala.js -  Assets compilers run on the Rhino JS engine (We

may consider Nashorn?) -  Sass/Compass on the fly requires native compiler

(not limited to Skinny)

Weak Points

-  Scala compilation is slow (use ./skinny ~compile for auto reloading)

-  Some helpful features are still absent (View helper, Authentication module)

-  Scalate errors may be kindless -  Eco-system has only begun -  Less name recognition over the world

Roadmap

-  We keep working on version 1.1 (for Scala 2.11, Scalatra 2.3 and others)

-  We’re always seeking new contributors -  Should be useful not only for Scala enthusiasts -  ScalaMatsuri 2014: Martin Odersky (Scala creator)

will come to Japan in September! -  Enjoy Scala!