[Lift] Re: Speeding load time; liftAjax.js and other javascript minified?
liftAjax is dynamically generated and it does not represent static content. Please see ScriptRenderer.scala. However is is a pretty small script so I'm not sure how much we'll actually fain by minifying it. Can you run a benchmark? Take from the browser the generated script, minify it and the serve it statically to browser and see how much are we saving. Br's, Marius On Jul 10, 11:00 am, DFectuoso santiago1...@gmail.com wrote: I dont know how liftAjax.js is generated, or if it changes or not, also I have no idea (if it regenerated) how it could be minified, and I know that minification seem like a micro-optimization but... With just GZipping and Javascript minification working together, the load time dropped from 16 seconds to just under 10 seconds. I was absolutely extactic at the progress I was making so for and so was my client!http://www.site-reference.com/articles/Website-Development/YSlow-Help... For Google an increase in page load time from 0.4 second to 0.9 seconds decreased traffic and ad revenues by 20%. For Amazon every 100 ms increase in load times decreased sales with 1%.http://www.svennerberg.com/2008/12/page-load-times-vs-conversion-rates/ So, analyzing a couple of lift apps with YSlow I find a couple of things that could be done to improve the average load time. Of course there's a lot of impact on how you do your css, where you host css and images(and how), compresion, server configuration, javascript and css performance and a lot of things on the application side; but it would be nice to make everything possible on the framework side to create that culture around every lift app =) So I wanted to throw that idea here and see how to help in this matter. Ideas? --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to liftweb@googlegroups.com To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Speeding load time; liftAjax.js and other javascript minified?
Hey, liftAjax.js is not regenerated dynamically as far as im aware... By default, lift ships with the maven plugin for YUI compressor, so that should minify the CSS/JS in your webapp dir. Perhaps we should try and minify liftAjax.js during the build of lift... marius is probally the best man for this as this stuff is pretty much his baby. Cheers, Tim On Jul 10, 9:00 am, DFectuoso santiago1...@gmail.com wrote: I dont know how liftAjax.js is generated, or if it changes or not, also I have no idea (if it regenerated) how it could be minified, and I know that minification seem like a micro-optimization but... With just GZipping and Javascript minification working together, the load time dropped from 16 seconds to just under 10 seconds. I was absolutely extactic at the progress I was making so for and so was my client!http://www.site-reference.com/articles/Website-Development/YSlow-Help... For Google an increase in page load time from 0.4 second to 0.9 seconds decreased traffic and ad revenues by 20%. For Amazon every 100 ms increase in load times decreased sales with 1%.http://www.svennerberg.com/2008/12/page-load-times-vs-conversion-rates/ So, analyzing a couple of lift apps with YSlow I find a couple of things that could be done to improve the average load time. Of course there's a lot of impact on how you do your css, where you host css and images(and how), compresion, server configuration, javascript and css performance and a lot of things on the application side; but it would be nice to make everything possible on the framework side to create that culture around every lift app =) So I wanted to throw that idea here and see how to help in this matter. Ideas? --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to liftweb@googlegroups.com To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Speeding load time; liftAjax.js and other javascript minified?
Tim, sorry but I have to say that liftAjax.js IS generated dynamically as I stated above :). It is not a script sitting somewhere but it ultimately comes from ScriptRenderer.scala Br's, Marius On Jul 10, 11:26 am, Timothy Perrett timo...@getintheloop.eu wrote: Hey, liftAjax.js is not regenerated dynamically as far as im aware... By default, lift ships with the maven plugin for YUI compressor, so that should minify the CSS/JS in your webapp dir. Perhaps we should try and minify liftAjax.js during the build of lift... marius is probally the best man for this as this stuff is pretty much his baby. Cheers, Tim On Jul 10, 9:00 am, DFectuoso santiago1...@gmail.com wrote: I dont know how liftAjax.js is generated, or if it changes or not, also I have no idea (if it regenerated) how it could be minified, and I know that minification seem like a micro-optimization but... With just GZipping and Javascript minification working together, the load time dropped from 16 seconds to just under 10 seconds. I was absolutely extactic at the progress I was making so for and so was my client!http://www.site-reference.com/articles/Website-Development/YSlow-Help... For Google an increase in page load time from 0.4 second to 0.9 seconds decreased traffic and ad revenues by 20%. For Amazon every 100 ms increase in load times decreased sales with 1%.http://www.svennerberg.com/2008/12/page-load-times-vs-conversion-rates/ So, analyzing a couple of lift apps with YSlow I find a couple of things that could be done to improve the average load time. Of course there's a lot of impact on how you do your css, where you host css and images(and how), compresion, server configuration, javascript and css performance and a lot of things on the application side; but it would be nice to make everything possible on the framework side to create that culture around every lift app =) So I wanted to throw that idea here and see how to help in this matter. Ideas? --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to liftweb@googlegroups.com To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Speeding load time; liftAjax.js and other javascript minified?
DFectuoso santiago1...@gmail.com writes: I dont know how liftAjax.js is generated, or if it changes or not, also I have no idea (if it regenerated) how it could be minified, and I know that minification seem like a micro-optimization but... [...] So, analyzing a couple of lift apps with YSlow I find a couple of things that could be done to improve the average load time. Of course there's a lot of impact on how you do your css, where you host css and images(and how), compresion, server configuration, javascript and css performance and a lot of things on the application side; but it would be nice to make everything possible on the framework side to create that culture around every lift app =) I've been thinking about this for some time and may get around to implement it at some point, but it doesn't have top priority for me atm, so I'll just share the ideas here: There are a number of situations that revolves around this: - Minifying JS CSS files (gzip can be handled by the frontend I think?) - To minimize requests, the Expires-Date should be set way into the future. How do we ensure client always get the right file when changing? - Many CSS JS files can be combined into a single file for better performance for first time visitors (this doesn't work for all files so some kind of exception list needs to be maintained) - Using a CDN for distribution of static files So to sketch the idea: - In templates/html all requests for JS or CSS resources should be via a lift tag, e.g: lift:javascript src=/classpath/jquery.js/ and lift:css href=/css/main.css - In development mode, Lift would just generate the corresponding tags for easy debugging - In production mode, Lift would minify the resource (and cache of course) and generate the tags, but the MD5 sum of the file appended to the URL. This way, we ensure that clients will always reload the resource if it changes even if the Expires date is set into the future - In the advanced scenario, multiple files can be combined into a single file (i.e. all css files can be combined to a single, minified version), all javascript files could be combined. These files should probably be generated (and cached) dynamically since different pages may need different resources - If configured, the resources could be served via a CDN by just generating the correct URL Thoughts? /Jeppe --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to liftweb@googlegroups.com To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Speeding load time; liftAjax.js and other javascript minified?
Ok, i got my tools ready; but I am too tired so i'll run them tomorrow... Right now i did 2 different minifications on dfectuoso.com/liftAjax/ test1.html and test2.html in test.html its the liftAjax file we all use... so, im probably going to run a couple hundred hits on each one and see if theres any change; but im going to use (on each one) diferent versions of jQuery, just cause i love statistics... I'll keep you guys updated On Jul 10, 1:51 am, Timothy Perrett timo...@getintheloop.eu wrote: My bad marius... your reply must have gone in just before mine (I didnt read it before sending mine!) Cheers, Tim On Jul 10, 9:33 am, marius d. marius.dan...@gmail.com wrote: Tim, sorry but I have to say that liftAjax.js IS generated dynamically as I stated above :). It is not a script sitting somewhere but it ultimately comes from ScriptRenderer.scala Br's, Marius On Jul 10, 11:26 am, Timothy Perrett timo...@getintheloop.eu wrote: Hey, liftAjax.js is not regenerated dynamically as far as im aware... By default, lift ships with the maven plugin for YUI compressor, so that should minify the CSS/JS in your webapp dir. Perhaps we should try and minify liftAjax.js during the build of lift... marius is probally the best man for this as this stuff is pretty much his baby. Cheers, Tim On Jul 10, 9:00 am, DFectuoso santiago1...@gmail.com wrote: I dont know how liftAjax.js is generated, or if it changes or not, also I have no idea (if it regenerated) how it could be minified, and I know that minification seem like a micro-optimization but... With just GZipping and Javascript minification working together, the load time dropped from 16 seconds to just under 10 seconds. I was absolutely extactic at the progress I was making so for and so was my client!http://www.site-reference.com/articles/Website-Development/YSlow-Help... For Google an increase in page load time from 0.4 second to 0.9 seconds decreased traffic and ad revenues by 20%. For Amazon every 100 ms increase in load times decreased sales with 1%.http://www.svennerberg.com/2008/12/page-load-times-vs-conversion-rates/ So, analyzing a couple of lift apps with YSlow I find a couple of things that could be done to improve the average load time. Of course there's a lot of impact on how you do your css, where you host css and images(and how), compresion, server configuration, javascript and css performance and a lot of things on the application side; but it would be nice to make everything possible on the framework side to create that culture around every lift app =) So I wanted to throw that idea here and see how to help in this matter. Ideas? --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to liftweb@googlegroups.com To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Speeding load time; liftAjax.js and other javascript minified?
I kinda knew that coz i did a very fast search for a file called liftAjax.js... just wanted to be sure! And now I am... Why don't you guys let me run some benchmarks before actually investing some time on this? (but keep talking about this subject tho, nothing bad can come from exploring how to do faster lift apps! ) On Jul 10, 1:33 am, marius d. marius.dan...@gmail.com wrote: Tim, sorry but I have to say that liftAjax.js IS generated dynamically as I stated above :). It is not a script sitting somewhere but it ultimately comes from ScriptRenderer.scala Br's, Marius On Jul 10, 11:26 am, Timothy Perrett timo...@getintheloop.eu wrote: Hey, liftAjax.js is not regenerated dynamically as far as im aware... By default, lift ships with the maven plugin for YUI compressor, so that should minify the CSS/JS in your webapp dir. Perhaps we should try and minify liftAjax.js during the build of lift... marius is probally the best man for this as this stuff is pretty much his baby. Cheers, Tim On Jul 10, 9:00 am, DFectuoso santiago1...@gmail.com wrote: I dont know how liftAjax.js is generated, or if it changes or not, also I have no idea (if it regenerated) how it could be minified, and I know that minification seem like a micro-optimization but... With just GZipping and Javascript minification working together, the load time dropped from 16 seconds to just under 10 seconds. I was absolutely extactic at the progress I was making so for and so was my client!http://www.site-reference.com/articles/Website-Development/YSlow-Help... For Google an increase in page load time from 0.4 second to 0.9 seconds decreased traffic and ad revenues by 20%. For Amazon every 100 ms increase in load times decreased sales with 1%.http://www.svennerberg.com/2008/12/page-load-times-vs-conversion-rates/ So, analyzing a couple of lift apps with YSlow I find a couple of things that could be done to improve the average load time. Of course there's a lot of impact on how you do your css, where you host css and images(and how), compresion, server configuration, javascript and css performance and a lot of things on the application side; but it would be nice to make everything possible on the framework side to create that culture around every lift app =) So I wanted to throw that idea here and see how to help in this matter. Ideas? --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to liftweb@googlegroups.com To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
