caching control? ...getting old RSS feed instead of the updated one

From: Giovanni Biscuolo via curl-users <curl-users_at_cool.haxx.se>
Date: Fri, 23 Jul 2021 12:42:33 +0200

Hello users,

I've an issue getting an RSS feed with curl [1].

If I use curl to fetch https://www.roars.it/online/feed/ I get:

--8<---------------cut here---------------start------------->8---

giovanni_at_roquette: curl https://www.roars.it/online/feed/
<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
        xmlns:content="http://purl.org/rss/1.0/modules/content/"
        xmlns:wfw="http://wellformedweb.org/CommentAPI/"
        xmlns:dc="http://purl.org/dc/elements/1.1/"
        xmlns:atom="http://www.w3.org/2005/Atom"
        xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
        xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
        
        xmlns:georss="http://www.georss.org/georss"
        xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#"
>

<channel>
        <title>ROARS</title>
        <atom:link href="https://www.roars.it/online/feed/" rel="self" type="application/rss+xml" />
        <link>https://www.roars.it/online</link>
        <description>Return On Academic Research and School</description>
        <lastBuildDate>Fri, 28 May 2021 06:54:46 +0000</lastBuildDate>
        <language>it-IT</language>
        <sy:updatePeriod>
        hourly </sy:updatePeriod>
        <sy:updateFrequency>
        1 </sy:updateFrequency>
        <generator>https://wordpress.org/?v=5.6.4</generator>

--8<---------------cut here---------------end--------------->8---

As you can see, the "lastBuildDate" of the feed is "Fri, 28 May 2021
06:54:46 +0000"

If I open the feed with my browser (ungoogled-chromium) I get this:

--8<---------------cut here---------------start------------->8---

<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
        xmlns:content="http://purl.org/rss/1.0/modules/content/"
        xmlns:wfw="http://wellformedweb.org/CommentAPI/"
        xmlns:dc="http://purl.org/dc/elements/1.1/"
        xmlns:atom="http://www.w3.org/2005/Atom"
        xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
        xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
        
        xmlns:georss="http://www.georss.org/georss"
        xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#"
>

<channel>
        <title>ROARS</title>
        <atom:link href="https://www.roars.it/online/feed/" rel="self" type="application/rss+xml" />
        <link>https://www.roars.it/online</link>
        <description>Return On Academic Research and School</description>
        <lastBuildDate>Wed, 21 Jul 2021 14:05:50 +0000</lastBuildDate>
        <language>it-IT</language>
        <sy:updatePeriod>
        hourly </sy:updatePeriod>
        <sy:updateFrequency>
        1 </sy:updateFrequency>
        <generator>https://wordpress.org/?v=5.6.4</generator>

--8<---------------cut here---------------end--------------->8---

As you can see the "lastBuildDate" is "Wed, 21 Jul 2021 14:05:50 +0000".

Please do you have any hint why the documents differs?

Is the first page coming from some curl cache I should configure
otherwise?


Thanks! Gio'


[1] I use curl in Emacs elfeed to fetch feeds

-- 
Giovanni Biscuolo
Xelera IT Infrastructures

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Received on 2021-07-23