Inconsistent caching issue with Fanfiction.Net

[Kiradien]

As of an apparent server maintenance a few weeks ago, Fanfiction.net has had inconsistent caching failures resulting in a "Chapter not found" error. An alternative link exists to access data when the cache is not loaded, however it can cause issues if constantly accessed directly.

Steps to reproduce the behavior:

• Consistent reproduction is difficult, as this is a caching issue on the server end. Suggested fix using shortened Uri forces cache to engage within 15 minutes.
• Random novels will be "missing" a chapter when stepping through.

Additional context
Replacing url with /(https?://(?:www.)?\w+.\w+/s/\d+/\d+)/[a-z-0-9]+/i[1] resolves to base page and updates server cache. Constant replacement of url for every page load puts extra load on server.

Chapters added when Fanfiction.net was having server issues appear to have a higher consistency of cache failures. Example chapter: https://www.fanfiction.net/s/14128289/69/A-Darker-Path
Appearances may be deceiving, not 100% confident on this issue.

Have a fix at 123e3e3 - still devtesting. It worked without the rateLimitDelay repeat, however have been unable to get a consistent second test yet.

[Kiradien]

PR in place with fix #1119