Lift Introduction
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Lift and Scala presentation at Silicon Valley Code Conf (10/09/2011 @ Foothill College)
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Lift Introduction
- 1. Dave Briccetti Indrajit Raychaudhuri @dcbriccetti @indrajitr
- 2. Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 3. ⢠Secure ⢠Interactive ⢠Designer Friendly Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 4. ⢠Secure ⢠Interactive ⢠Designer Friendly ⢠Scalable Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 5. y !! a s ⢠Secure r E p e ⢠Interactive S u ⢠Designer Friendly ⢠Scalable Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 6. About Us ⢠Dave Briccetti ⢠Indrajit Raychaudhuri ⢠Veteran software developer ⢠Active Lift committer ⢠Teacher in love with programming ⢠Hacker trying to do programming Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 7. The Project Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 8. The Project ⢠Started by David Pollak (@dpp) in 2006 ⢠Community (> 3000 members in ML) ⢠Committers from around the world ⢠Stable master philosophy Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 9. The Project ⢠Developers â Plumbers ⢠Best concepts from other frameworks Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 10. The Project Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 11. The Project ⢠Open Source (Apache 2.0 License) ⢠Ready on a JVM near you ⢠Full Java EE compliance ⢠Works in all modern servlet containers ⢠Batteries included (user replaceable) Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 12. The Project ⢠Best implementation on JVM for Comet Ajax REST Templating Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 13. Secure Lift Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 14. Secure Lift ⢠Definitive strategy tackles OWASP Top 10 ⢠So you donât have to bother Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 15. Secure Lift ⢠Definitive strategy tackles OWASP Top 10 â.name *â #> â<script>alert(âhiâ);</script>â ⢠So you donât have to bother Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 16. Interactive Lift Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 17. Interactive Lift ⢠Great support for Comet and AJAX ⢠Great REST Support ⢠Parallel Rendering of Snippets ⢠Lazy Rendering of Snippets Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 18. Interactive Lift ⢠Great support for Comet and AJAX serve { case "api" :: "user" :: AsLong(id) :: _ XmlGet _ => <b>ID:{id}</b> ⢠Great REST Support case "api" :: "user" :: AsLong(id) :: _ JsonGet _ => JInt(id) } ⢠Parallel Rendering of Snippets ⢠Lazy Rendering of Snippets Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 19. Interactive Lift ⢠Great support for Comet and AJAX ⢠Great REST Support ⢠Parallel Rendering of Snippets ⢠Lazy Rendering of Snippets Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 20. Interactive Lift ⢠Great support for Comet and AJAX // HTML <div class="lift:FetchTicker?parallel=true">   Ticker server #1: <span class="ticker">The Ticker</span> ⢠Great REST Support </div> // Snippet object FetchTicker { ⢠Parallel Rendering of Snippets   def render = {     Thread.sleep(500 millis) // The call     ".ticker" #> Thread.currentThread.getName // The result ⢠Lazy Rendering of Snippets   } } Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 21. Interactive Lift ⢠Great support for Comet and AJAX ⢠Great REST Support ⢠Parallel Rendering of Snippets ⢠Lazy Rendering of Snippets Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 22. Interactive Lift ⢠Great support for Comet and AJAX // HTML <div class="lift:LazyLoad">   <span class="lift:LongTime"> I started this computation at ⢠Great REST Support     <span id="start">start</span> and it     completed at <span id="end">end</span>.   </span> ⢠Parallel Rendering of Snippets </div> // Snippet object LongTime { ⢠Lazy Rendering of Snippets   def render = {     val start = now     Thread.sleep(randomLong(15 seconds))     "#start" #> start.toString &     "#end" #> now.toString    } } Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 23. Designer Friendly Lift Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 24. Designer Friendly Lift ⢠Step 1: Get designers to write pure XHTML, HTML5 ⢠Step 2: There isnât any! Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 25. Scalable Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 26. Scalable ⢠Fast path for handling REST/Ajax/Comet ⢠No additional layers (e.g. bolt-on security) ⢠Foursquare and UK Guardian serve millions of pages a day with Lift Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 27. Summary ⢠Tremendously secure ⢠Highly Interactive Web apps simple ⢠Very friendly to designers ⢠Successful large scale deployments Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 28. Resources ⢠Source [github.com/lift] ⢠Books ⢠Simply Lift [simply.liftweb.net] ⢠Exploring Lift [exploring.liftweb.net] ⢠Wiki [wiki.liftweb.net] ⢠Mailing List [googlegroups.com/group/liftweb] Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 29. Scala: A Quick Primer
- 30. Smarter Java ⢠Runs on JVM, interoperated with any JVM language ⢠Functional (and OO too!) ⢠Itâs a lot easier than you think ⢠Stories from the trenches Copyright Š 2011 Lift Web Framework, Worldwide Conferencing, LLC
- 32. Questions?
Hinweis der Redaktion
- - Heard of Lift\n- Used Lift (and other web framework)\n- Toughest problem in building web application\n- Security, Interactive, Scalable (not 90's type - cloud grade), Designer friendly (User interface)\n\n
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- Backed by vibrant community\nCommitter in every 3 TZ\nThe master never breaks [people conveniently use SNAPSHOT for deployment]\nCommits go through CI server\nMilestone Release on regular basis (for those preferring stable build)\n
- Plumbing taken care of, so that developer don&#x2019;t have to\nView First philosophy\nSeaside: Granular sessions and security\nRails: Convention over configuration\nWicket: Designer friendly templates\n+ the tough ones (truly realtime with existing tech is hard)\n
- Business friendly license, very clean IP\nTypically builds a war\nThus, works on all modern servlet containers on a compatible JVM\nFor well known containers it even detects availability of advanced features and uses them (continuation in Jetty, Tomcat 7, GlassFish)\nMost of all that you need for a web application is bundled (but everything has clean abstraction - so you can choose your own implementation)\ne.g., The HTTPProvider can be implemented to work on, say, Netty/Unfiltered\n\n
- Comet and Ajax\nAsynchronous page rendering\nDesigner friendly templates\n\n
- Injection\nXSS\nSession Management\nDirect Object References\nCSRF\nURL Access\n\n
- Injection\nXSS\nSession Management\nDirect Object References\nCSRF\nURL Access\n\n
- - Via Actor model\n- Continuations supported on Jetty6+, Tomcat 7, Glassfish 3\n- JS boiler plate handled behind the scene\n- Supports JQuery, YUI, ExtJS\n\nFrameworks usually don&#x2019;t have these ootb, riding on Lift&#x2019;s comet support, it&#x2019;s easy to do &#x201C;server push&#x201D;\n
- - Via Actor model\n- Continuations supported on Jetty6+, Tomcat 7, Glassfish 3\n- JS boiler plate handled behind the scene\n- Supports JQuery, YUI, ExtJS\n\nFrameworks usually don&#x2019;t have these ootb, riding on Lift&#x2019;s comet support, it&#x2019;s easy to do &#x201C;server push&#x201D;\n
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- Impedance mismatch and friction between design team and development team\nRaise of hands on the trouble\nDemo code on class based and namespace based approach\n
- Backed by strongly typed language\nHighly Functional. Therefore, parallel-izable (scalable)\n\nSimple notion of Transformation\nRequest => Response [NodeSeq => NodeSeq] based on current user/system state\nNodeSeq is immutable\n\nSnippets can be executed in parallel\n\n
- To Wrap Up:\nprobably the friendliest for a JVM based framework\n\n
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