fix: rss failures with exponential blacklist#1362
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ankitsmt211 merged 4 commits intoTogether-Java:developfrom Dec 29, 2025
Merged
fix: rss failures with exponential blacklist#1362ankitsmt211 merged 4 commits intoTogether-Java:developfrom
ankitsmt211 merged 4 commits intoTogether-Java:developfrom
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failed rss feed urls are marked as blacklisted upto 24 hours, if it's a dead url it notifies with error log for admin to remove it.
moves numbers used for backing off hours to constants and adds a helper to calculate backing off hours duration
christolis
previously approved these changes
Dec 26, 2025
application/src/main/java/org/togetherjava/tjbot/features/rss/RSSHandlerRoutine.java
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christolis
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Dec 28, 2025
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context: error logs being spammed by intermittent 404 status code on rss feed urls
failed rss feed urls are marked as blacklisted upto 24 hours, if it's a dead url it notifies with error log for admin to remove it.
How the fix works
Failed RSS feed URLs are tracked in an in-memory cache along with their failure count and last failure timestamp.
Each failure triggers an exponential backoff before the next retry: 1h, 2h, 4h, 8h, 16h, capped at 24 hours maximum.
While a URL is within its backoff window, it is skipped and not fetched.
If a fetch succeeds, the failure state is removed from cache and the URL resumes normal polling.
Cache entries automatically expire after 7 days, preventing stale failures from persisting indefinitely.
If a feed fails 15 times, it is considered potentially dead and an error is logged to notify admins to remove it from configuration.