Re: Trimming the extra spaces in the output page
First, I understand your motivation -- HTML file size can be a big performance problem for many apps. We did some analysis on a project that I was on and it turned out the server was quite fast, but that HTML file transfer time and then browser redering time were the major factors in actual performance. I would have never guessed that, but it was clearly the case after our analysis. In terms of a solution for this problem, I suggest not doing this at run time, but rather do it at build time. You want to keep spaces in the file for maintainability during development, but it would be nice to strip them out during the build. This would avoid adding any runtime overhead. You should be able to do this easily at build time (using Ant). This is one good reason to have your build copy the "web" files to a new location during the build. If you are already doing that, it should be easy to strip the whitespace out using an Ant filter. Be careful what you strip out. - Getting rid of line breaks will change the appearance of your HTML files. A line break is considered white space. If you get rid of them, you will likely have instances where "some whitespace" becomes "no whitespace". That will mess up your pages. I wouldn't strip these. You could replace the line breaks with a single space to maintain the appearance, but there seems to be no point in doing that since your won't actually be reducing the file size. No line breaks would make the resulting HTML files very hard to read (for debugging, etc.). Keep the line breaks. - Don't remove all the spaces. You want to eliminate extra whitespace, but not all whitespace entirely (since whitespace matters in HTML). You just want to shrink consecutive runs of whitespace down to one whitespace character, so as to preserve the appearance of the pages. I haven't looked at what comes Ant that might be good for doing this, but it seems like there should be some kind of filter that should help. Here's an example: For instance, you don't want to turn this: Hello world! Into this (which won't look the same): Helloworld! Or this (which also won't look the same): Hello world! But rather it would be best to turn it into this (which is as small as you can make it without requiring too much smarts in the filter): Hello world! -Max - Original Message - From: "EL AKARI Mehdi" <[EMAIL PROTECTED]> To: "Struts Users Mailing List" <[EMAIL PROTECTED]> Sent: Monday, October 20, 2003 10:33 AM Subject: Trimming the extra spaces in the output page Hi, I'm trying to optimise the size of the output pages of a struts application. The first thing that i'm trying to do is to trim the extra spaces and carriage returns in the output page. Do you have any ideas of how to do this? If you have any suggestions of how to optimise the page output they are welcome! Thanks Mehdi - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Trimming the extra spaces in the output page
I agree with the Filter suggestion, but I would take a step back and ask whether you *really* need to do this. Trimming the excess whitespace won't really make much difference to the size of the downloaded page and adding the Filter processing could even make it slower, not faster to load. If you're really producing pages that are too large I would first consider the following optimizations before worrying about trimming whitespace: - Reduce the number and size of images in the page - Convert the page layout to use CSS instead of nested tables (this alone can reduce the page weight by as much as 50%) - Split the page into smaller, lighter pages. Steve > -Original Message- > From: James Mitchell [mailto:[EMAIL PROTECTED] > Sent: October 20, 2003 11:40 AM > To: 'Struts Users Mailing List' > Subject: RE: Trimming the extra spaces in the output page > > > Someone mentioned this a few weeks back. I don't remember the solution, > but if it were my job to make this happen, I would most likely use a > Filter. > > http://java.sun.com/products/servlet/Filters.html > > > -- > James Mitchell > Software Engineer / Struts Evangelist > http://www.struts-atlanta.org > 678.910.8017 > AIM:jmitchtx > > > > > > -Original Message- > > From: EL AKARI Mehdi [mailto:[EMAIL PROTECTED] > > Sent: Monday, October 20, 2003 1:34 PM > > To: Struts Users Mailing List > > Subject: Trimming the extra spaces in the output page > > > > > > Hi, > > I'm trying to optimise the size of the output pages of a > > struts application. > > The first thing that i'm trying to do is to trim the extra > > spaces and carriage returns in the output page. > > Do you have any ideas of how to do this? > > If you have any suggestions of how to optimise the page > > output they are welcome! > > Thanks > > Mehdi > > > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Trimming the extra spaces in the output page
Someone mentioned this a few weeks back. I don't remember the solution, but if it were my job to make this happen, I would most likely use a Filter. http://java.sun.com/products/servlet/Filters.html -- James Mitchell Software Engineer / Struts Evangelist http://www.struts-atlanta.org 678.910.8017 AIM:jmitchtx > -Original Message- > From: EL AKARI Mehdi [mailto:[EMAIL PROTECTED] > Sent: Monday, October 20, 2003 1:34 PM > To: Struts Users Mailing List > Subject: Trimming the extra spaces in the output page > > > Hi, > I'm trying to optimise the size of the output pages of a > struts application. > The first thing that i'm trying to do is to trim the extra > spaces and carriage returns in the output page. > Do you have any ideas of how to do this? > If you have any suggestions of how to optimise the page > output they are welcome! > Thanks > Mehdi > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
