Playframework(13)Update Version and pick up the knowledge

Playframework(13)Update Version and pick up the knowledge

1. Pick up the Old Knowledge
Our company is using the old version http://downloads.typesafe.com/releases/play-2.0.4.zip
Just follow the blog and set up all these things.

>play eclipsify
Then can be import to eclipse

>play idea 
Import to intellij

deployment
>plan clean compile stage
>target/start
>target/start -DapplyEvolutions.default=true

Or

>play dist
>play -Dconfig.file=path/file dist

>start -Dconfig.url=http://conf.mycompany.cm/conf/prod.conf 
>start -Dhttp.port=9998 
>start -Dhttp.port=1234 -Dhttp.address=127.0.0.1

Handling Asynchronous Results
  def index = Action {
    val promiseOfResp = Akka.future {
      Ok("")
    }
    Async {
      promiseOfResp.map(resp => resp)
    }
  }

Thread Pool
https://www.playframework.com/documentation/2.3.1/ThreadPools
http://stackoverflow.com/questions/24579030/play-framework-what-happens-when-requests-exceeds-the-available-threads
https://www.playframework.com/documentation/2.1.0/ThreadPools
https://www.playframework.com/documentation/2.0.4/ScalaAsync

Based on the document, there is default thread pool configured to support multiple thread, but there is thread VS events. So the suggestion is to use events and threads.
Threads is configured based on the cores.
We use Promise to do asynchronous requests to support multiple events.

Threads For Spray
http://spray.io/documentation/1.2.1/spray-can/
http://spray.io/documentation/1.2.1/spray-can/configuration/
http://doc.akka.io/docs/akka/2.1.4/general/configuration.html?_ga=1.238217664.1729015399.1407273046

It seems to be 
default-dispatcher {
     type = “Dispatcher”
     executor = “fork-join-executor”
     for-join-executor{
          parallelism-min = 8
          parallelism-factor = 3.0 #ceil(available processors * factor)
          parallelism-max = 64
     }
}

2. Latest Play and Typesafe Activator
Download the latest activator
>wget http://downloads.typesafe.com/typesafe-activator/1.2.8/typesafe-activator-1.2.8-minimal.zip

Unzip it and place it in the working directory, add the command to the path.

>activator ui

Here is the source codes
https://github.com/typesafehub/activator

This command will be perfect.
>activator ui -Dhttp.address=0.0.0.0 -Dhttp.port=8888

That can build the project based on the ui. Or we do it in command line.
>activator new easyplay play-scala
>cd easyplay
>activator

Then the same thing, visit this page to go on
http://localhost:9000/


References:
Playframework 1~12
http://sillycat.iteye.com/blog/1743396
http://sillycat.iteye.com/blog/1750340
http://sillycat.iteye.com/blog/1750947
http://sillycat.iteye.com/blog/1751649
http://sillycat.iteye.com/blog/1752183
http://sillycat.iteye.com/blog/1752579
http://sillycat.iteye.com/blog/1753450
http://sillycat.iteye.com/blog/1754139
http://sillycat.iteye.com/blog/1754381
http://sillycat.iteye.com/blog/1756342
http://sillycat.iteye.com/blog/1757098
http://sillycat.iteye.com/blog/1774803


https://www.playframework.com/documentation/2.0.4/IDE
https://www.playframework.com/documentation/2.3.x/NewApplication