[Koha-bugs] [Bug 11190] sitemap.pl -- Generate a Catalog sitemap

[bugzilla-daemon at bugs.koha-community.org]

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=11190

--- Comment #32 from Paul Poulain <paul.poulain at biblibre.com> ---
(In reply to Frédéric Demians from comment #31)
> (In reply to Paul Poulain from comment #28)
> > Additional (final ?) comment: there is no changefreq definition. I can't
> > find the default value if you don't specify it, but I think that a monthly
> > or even yearly changefreq is better for a search engine 
> 
> The web crawlers download the sitemap files at an unknown frequency, and
> then compare the recent URL with the previous one, based on url's timestamp.
> Even if the sitemap is updated on the Koha server daily, the crawlers won't
> download it daily.
I think we're not talking of the same thing.
http://www.sitemaps.org/protocol.html says 
===============================
 <changefreq>     optional     

How frequently the page is likely to change. This value provides general
information to search engines and may not correlate exactly to how often they
crawl the page. Valid values are:

    always
    hourly
    daily
    weekly
    monthly
    yearly
    never

The value "always" should be used to describe documents that change each time
they are accessed. The value "never" should be used to describe archived URLs.

Please note that the value of this tag is considered a hint and not a command.
Even though search engine crawlers may consider this information when making
decisions, they may crawl pages marked "hourly" less frequently than that, and
they may crawl pages marked "yearly" more frequently than that. Crawlers may
periodically crawl pages marked "never" so that they can handle unexpected
changes to those pages.
=================================

It can be defined for each page. My comment was related to each opac-detail.pl
page description: we should say to the search engine that the page does not
change often, so once it's indexed, there's no need to come back frequently.

HTH

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