神马文学网RSS解读
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What is RSS?
By Mark Pilgrim
RSS is a format for syndicating news and the content of news-like sites, including major news sites like Wired, news-oriented community sites like Slashdot, and personal weblogs. But it‘s not just for news. Pretty much anything that can be broken down into discrete items can be syndicated via RSS: the "recent changes" page of a wiki, a changelog of CVS checkins, even the revision history of a book. Once information about each item is in RSS format, an RSS-aware program can check the feed for changes and react to the changes in an appropriate way.
RSS-aware programs called news aggregators are popular in the weblogging community. Many weblogs make content available in RSS. A news aggregator can help you keep up with all your favorite weblogs by checking their RSS feeds and displaying new items from each of them.
A brief history
But coders beware. The name "RSS" is an umbrella term for a format that spans several different versions of at least two different (but parallel) formats. The original RSS, version 0.90, was designed by Netscape as a format for building portals of headlines to mainstream news sites. It was deemed overly complex for its goals; a simpler version, 0.91, was proposed and subsequently dropped when Netscape lost interest in the portal-making business. But 0.91 was picked up by another vendor, UserLand Software, which intended to use it as the basis of its weblogging products and other web-based writing software.
In the meantime, a third, non-commercial group split off and designed a new format based on what they perceived as the original guiding principles of RSS 0.90 (before it got simplified into 0.91). This format, which is based on RDF, is called RSS 1.0. But UserLand was not involved in designing this new format, and, as an advocate of simplifying 0.90, it was not happy when RSS 1.0 was announced. Instead of accepting RSS 1.0, UserLand continued to evolve the 0.9x branch, through versions 0.92, 0.93, 0.94, and finally 2.0.
What a mess.
So which one do I use?
That‘s 7 -- count ‘em, 7! -- different formats, all called "RSS". As a coder of RSS-aware programs, you‘ll need to be liberal enough to handle all the variations. But as a content producer who wants to make your content available via syndication, which format should you choose?
RSS versions and recommendations
Version
Owner
Pros
Status
Recommendation
0.90
Netscape
Obsoleted by 1.0
Don‘t use
0.91
UserLand
Drop dead simple
Officially obsoleted by 2.0, but still quite popular
Use for basic syndication. Easy migration path to 2.0 if you need more flexibility
0.92, 0.93, 0.94
UserLand
Allows richer metadata than 0.91
Obsoleted by 2.0
Use 2.0 instead
1.0
RSS-DEV Working Group
RDF-based, extensibility via modules, not controlled by a single vendor
Stable core, active module development
Use for RDF-based applications or if you need advanced RDF-specific modules
2.0
UserLand
Extensibility via modules, easy migration path from 0.9x branch
Stable core, active module development
Use for general-purpose, metadata-rich syndication
它是什么：站点用来和其他站点之间共享内容的简易方式（也叫聚合内容）。 RSS使用XML作为彼此共享内容的标准方式。
它代表什么：Really Simple Syndication （或RDF Site Summary，RDF站点摘要）
它有什么用处：让别人容易的发现你已经更新了你的站点，让人们很容易的追踪他们阅读的所有weblogs。
- 作者：Future 2005年05月26日, 星期四 21:29加入博采
你可以使用这个链接引用该篇文章 http://publishblog.blogchina.com/blog/tb.b?diaryID=1666044
By Mark Pilgrim
RSS is a format for syndicating news and the content of news-like sites, including major news sites like Wired, news-oriented community sites like Slashdot, and personal weblogs. But it‘s not just for news. Pretty much anything that can be broken down into discrete items can be syndicated via RSS: the "recent changes" page of a wiki, a changelog of CVS checkins, even the revision history of a book. Once information about each item is in RSS format, an RSS-aware program can check the feed for changes and react to the changes in an appropriate way.
RSS-aware programs called news aggregators are popular in the weblogging community. Many weblogs make content available in RSS. A news aggregator can help you keep up with all your favorite weblogs by checking their RSS feeds and displaying new items from each of them.
A brief history
But coders beware. The name "RSS" is an umbrella term for a format that spans several different versions of at least two different (but parallel) formats. The original RSS, version 0.90, was designed by Netscape as a format for building portals of headlines to mainstream news sites. It was deemed overly complex for its goals; a simpler version, 0.91, was proposed and subsequently dropped when Netscape lost interest in the portal-making business. But 0.91 was picked up by another vendor, UserLand Software, which intended to use it as the basis of its weblogging products and other web-based writing software.
In the meantime, a third, non-commercial group split off and designed a new format based on what they perceived as the original guiding principles of RSS 0.90 (before it got simplified into 0.91). This format, which is based on RDF, is called RSS 1.0. But UserLand was not involved in designing this new format, and, as an advocate of simplifying 0.90, it was not happy when RSS 1.0 was announced. Instead of accepting RSS 1.0, UserLand continued to evolve the 0.9x branch, through versions 0.92, 0.93, 0.94, and finally 2.0.
What a mess.
So which one do I use?
That‘s 7 -- count ‘em, 7! -- different formats, all called "RSS". As a coder of RSS-aware programs, you‘ll need to be liberal enough to handle all the variations. But as a content producer who wants to make your content available via syndication, which format should you choose?
RSS versions and recommendations
Version
Owner
Pros
Status
Recommendation
0.90
Netscape
Obsoleted by 1.0
Don‘t use
0.91
UserLand
Drop dead simple
Officially obsoleted by 2.0, but still quite popular
Use for basic syndication. Easy migration path to 2.0 if you need more flexibility
0.92, 0.93, 0.94
UserLand
Allows richer metadata than 0.91
Obsoleted by 2.0
Use 2.0 instead
1.0
RSS-DEV Working Group
RDF-based, extensibility via modules, not controlled by a single vendor
Stable core, active module development
Use for RDF-based applications or if you need advanced RDF-specific modules
2.0
UserLand
Extensibility via modules, easy migration path from 0.9x branch
Stable core, active module development
Use for general-purpose, metadata-rich syndication
它是什么：站点用来和其他站点之间共享内容的简易方式（也叫聚合内容）。 RSS使用XML作为彼此共享内容的标准方式。
它代表什么：Really Simple Syndication （或RDF Site Summary，RDF站点摘要）
它有什么用处：让别人容易的发现你已经更新了你的站点，让人们很容易的追踪他们阅读的所有weblogs。
- 作者：Future 2005年05月26日, 星期四 21:29加入博采
你可以使用这个链接引用该篇文章 http://publishblog.blogchina.com/blog/tb.b?diaryID=1666044