akka.http.model.Uri

port of akka/spray's Uri class to Scala.js. The original code is to be found on the relase-2.3-dev branch of akka.

This project is made up of a few subprojects:

• http.model.Uri : the project that adapts the akka code to scalaJS
• browserTest: a project to test loading a file with one URL per line into a browser. Useful for evaluating the speed of parsing in different browsers.
• cliTest: A 'project' to test the akka original libraries parsing speed
• cliJSTest: A 'project' to test the node Url library, using node. Run with fullOptStage::run after setting the file value to the location of a file of URLs. ( see below )

To test the speed of the parsing you can try the file links.zip which unzipped is 9.1MB and contains 226783 URLs . On my MacBookPro Retina this takes

• 37 seconds to parse in Chrome 36.0.1985.97 beta using the akka Uri library ported to ScalaJS with Scala-JS 0.5.2 but only 26.5 seconds with Scala-JS 0.5.3
• 1.453 seconds to parse in the original Akka Uri library on a JVM
• 4.226 seconds using the node.js Url library wrapped in ScalaJS in Chrome 36..
• 4.4 seconds to parse using the node.js Url library running in node itself

This suggests that parsing and canonicalisation of URLs should be done on the server, which should as much as possible send zipped and canonicalised n-triples files to the client. The client should then do as little as possible URI analysis - perhaps not more than removing #fragments. The client should stick as much as possible to simple string comparison.

In order to run the browser test suite you need to first build node.scalajs and make sure the browserTest/speedTest.html is pointing to the created bundle.js file which you create. I am looking for ways of automating that whole build. ( please contact me if you know how).

The ScalaJS team will be focusing on speed improvements for pure ScalaJS code next, so it will be interesting to see the improvements in the speed of the akka Uri class compiled with Scala JS.