Ted Leung on the air
Ted Leung on the air: Open Source, Java, Python, and ...
Tue, 06 Jan 2004
We need help with conditional GET
With the goal of helping blog software produce feeds that support conditional http GET and Gzip, I present a sampling of RSS feed URL's which fail to produce 304's. They also happen not to Gzip. In the table below, I show a semi-randomly selected feed URL and the blogging software which I believe is being used. I generated this list by hand, using NetNewsWire's bandwidth statistics window as a guide. Next time around I'll probably end up writing a script. But I hope there won't be a next time...

http://crazybob.org/roller/rss/crazybobRoller
http://www.jroller.com/rss/ericfjJRoller
http://linuxintegrators.com/hl40/blog/?flavor=rssBlojsom
http://blogs.gotdotnet.com/aconrad/BlogxBrowsing.asmx/GetRss?Gotdotnet blogs - BlogX
http://weblogs.asp.net/MainFeed.aspxWeblogs.asp.net - .Text
http://www.25hoursaday.com/weblog/SyndicationService.asmx/GetRssdasBlog
http://www.cincomsmalltalk.com/rssBlog/rssBlogView.xmlWhatever the Cincom blogs use
http://www.vanderburg.org/cgi-bin/glv/blosxom?flav=rssblosxom

Jay at Makeoutcity http://www.makeoutcity.com/RSS/index.rss gets his own special category because his feed is *huge* (400kB a shot) and does neither 304 or Gzip, and I have no idea what blog software he is using.

If the JRoller/Roller and gotdotnet/weblogs.asp.net systems would support 304 and gzip, it would change my statistics dramatically, due to the number of feeds using those systems.

[01:31] | [computers/internet/weblogs] | # | TB | F | G | 15 Comments | Other blogs commenting on this post
Check out the Cacheability Engine; it checks for conditional support, caching headers, clock skew, etc.

I'm about to do a rewrite to squash some long-standing bugs and generally make the code more sane, and I'll see if I can get gzip support in as well (so if you have another other requests/comments, now would be a good time ;)
Posted by Mark Nottingham at Tue Jan 6 07:47:21 2004



Ted, blojsom now  supports conditional GET. Previously we only had the GZIP filter in place. The conditional GET plugin was just added a few days ago, but I've got it running on my blog and it works like a champ. The GZIP filter has been available since early November and is enabled by default with the blojsom WAR I package up with the distribution.
<p/>
Whether or not choose people upgrade to the latest version of the software and use the latest plugins when available is something I can't control. I can only put things out there in hopes that people "do the right thing".
Posted by David Czarnecki at Tue Jan 6 15:23:17 2004

Blosxom has the lastmodified plugin.
Posted by Nelson at Tue Jan 6 17:01:15 2004



Mark,

Here's a site with a perl script for testing gzip

http://www.neuro-tech.net/archives/000031.html

Cacheability Engine looks really good!
Posted by Ted Leung at Tue Jan 6 22:37:28 2004



Lance,

If you put your RSS url into Mark's Cacheability engine
http://www.mnot.net/cacheability/, you'll find some interesting results.

There've been a number of JRoller related problems for me over the months.  I still keep getting a full copy of Carlos V.'s feed every day.  Since this isn't happening with many of the other feeds, that leaves JRoller as the culprit.
Posted by Ted Leung at Tue Jan 6 22:50:17 2004


Ted, I'd suggest filing a bug report about Roller; it seems that it should support it, yet you've identified that it isn't.  Perhaps someone on the development team would have more information -- and getting the issue on their rader in any case seems to be a good plan.
Posted by Richard Soderberg at Wed Jan 7 11:55:36 2004



You can subscribe to an RSS feed of the comments for this blog: RSS Feed for comments

Add a comment here:

You can use some HTML tags in the comment text:
To insert a URI, just type it -- no need to write an anchor tag.
Allowable html tags are: <a href>, <em>, <i>, <b>, <blockquote>, <br/>, <p>, <code>, <pre>, <cite>, <sub> and <sup>.

You can also use some Wiki style:
URI => [uri title]
<em> => _emphasized text_
<b> => *bold text*
Ordered list => consecutive lines starting spaces and an asterisk

Name:


E-mail:


URL:


Comment:


Remember my info?


twl JPG

About

Ted Leung FOAF Explorer

I work at the Open Source Applications Foundation (OSAF).
The opinions expressed here are entirely my own, not those of my employer.

Creative Commons License
This work is licensed under a Creative Commons License.

Now available!
Professional XML Development with Apache Tools : Xerces, Xalan, FOP, Cocoon, Axis, Xindice
Technorati Profile
PGP Key Fingerprint
My del.icio.us Bookmarks
My Flickr Photos


Syndicate
RSS 2.0 xml GIF
Comments (RSS 2.0) xml GIF
Atom 0.3 feed
Feedburner'ed RSS feed

< January 2004 >
SuMoTuWeThFrSa
     1 2 3
4 5 6 7 8 910
11121314151617
18192021222324
25262728293031

Archives
2006
2005
2004
2003

Articles
Macintosh Tips and Tricks

Search
Lucene
Blogs nearby
geourl PNG

Categories
/ (1567)
  books/ (33)
  computers/ (62)
    hardware/ (15)
    internet/ (58)
      mail/ (11)
      microcontent/ (58)
      weblogs/ (174)
        pyblosxom/ (36)
      www/ (25)
    open_source/ (145)
      asf/ (53)
      osaf/ (32)
        chandler/ (35)
        cosmo/ (1)
    operating_systems/ (16)
      linux/ (9)
        debian/ (15)
        ubuntu/ (2)
      macosx/ (101)
        tips/ (25)
      windows_xp/ (4)
    programming/ (156)
      clr/ (1)
      dotnet/ (13)
      java/ (71)
        eclipse/ (22)
      lisp/ (34)
      python/ (86)
      smalltalk/ (4)
      xml/ (18)
    research/ (1)
    security/ (4)
    wireless/ (1)
  culture/ (10)
    film/ (8)
    music/ (6)
  education/ (13)
  family/ (17)
  gadgets/ (24)
  misc/ (47)
  people/ (18)
  photography/ (25)
    pictures/ (12)
  places/ (3)
    us/ (0)
      wa/ (2)
        bainbridge_island/ (17)
        seattle/ (13)
  skating/ (6)
  society/ (20)



[Valid RSS]

del.icio.us linkblog

www.flickr.com

Blogroll

java.blogs
Listed on BlogShares

Locations of visitors to this page
Where are visitors to this page?


pyblosxom GIF