Add option to lower the feed scanning interval in order to make fewer requests

[joshuacwnewton]

Before you start.

• [X] I have checked the Common Problems page.
• [X] I have searched the issue tracker for a bug that matches the one I want to file, without success.

Desktop (please complete the following information):

• OS: Windows 10.0.19043
• Browser: Firefox 97.0.1
• Version: Fraidycat 1.1.10
• URL you are attempting to follow [if applicable]: N/A

Describe the bug

I use NextDNS as my DNS resolver (as an alternative to PiHole, which I love, but it's a bit of a pain to maintain your own server).

Recently, I got an email from NextDNS saying that I reached 250,000 requests out of my allotted 300,000 requests (free plan). I was curious where all those requests were coming from, so I checked the Analytics page, and saw this:

That's... a lot of requests!!

• The first entry is a domain associated with my ISP (I'm fairly certain that's just my router phoning home, but that's neither here nor there).
• Entries 2-6 and beyond, however, are feeds (mostly webcomics) that I've subscribed to through Fraidycat.
• Removing Fraidycat causes the requests to cease. For example, here's one specific feed, Boxer Hockey. Fraidycat was uninstalled and it has been some hours with no new entries in my logs after 2:48pm:

Proposed solution

For comparison, the settings page of Feedbro, another Firefox RSS reader, has this option:

I'm not sure what configuration Fraidycat uses under the hood (it looks like it checks once every ~3m, give or take), but it could be nice to expose this setting to users in some way to provide some control over the number of requests made.

[kickscondor]

Ok great - I agree. Fraidycat can be quite voracious - and this would be easy to expose. Thanks!

[aereaux]

Hello, just wanted to chime in that I'm experiencing the same problem. One of the feeds I subscribe to (https://hackerfactor.com/blog/) bans my IP often because fraidycat requests the RSS feed too often. It would probably also be possible to automatically set an interval per-feed based on how often it updates, but that could get complicated.

Fraidycat also doesn't appear to surface the 429 and 410 errors that I started getting, but that is a separate issue.