Blosxom Plug-in: last_modified
Adds an HTTP Last-Modified header to each Blosxom generated page. This reduces your bandwidth needs by permitting browsers and spiders to check for updates to older stories with an HTTP If-Modified-Since, rather than retrieving the full page each time. It also allows proxies such as Squid to cache older entries whilst refreshing correctly when newer ones are added.
By default this plugin will scan the list of stories and use the timestamp of the most recent one as the Last-Modified header.
The plugin uses the timestamps in %blosxom::files, so it is compatible with entries_index_tagged and other plugins which set the last_modified time as well as with standard Blosxom use of the storyfile.txt modification time.
Other plugins may if they wish place a standard Unix timestamp in $last_modified::last_modified to override the default Last-Modified time.
Nick Leverton <email@example.com>, http://www.leverton.org/blosxom/
This plugin: http://www.leverton.org/blosxom/Software/Projects/Blosxom/last_modified.html
Blosxom Plugin Docs: http://www.raelity.org/apps/blosxom/plugin.shtml
Address bug reports and comments to the Blosxom mailing list, firstname.lastname@example.org.
This Blosxom Plug-in Copyright 2008, Nick Leverton
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.