If you are interested in managing dead links I've found some info that might be useful:
* There is a MediaWiki library, DeadlinkChecker , in PHP that checks if a link is dead or alive. * There is also a library for WikiMedia wikis in python, Pywikibot , which has a script that finds dead links: weblinkchecker.py . * There is an extension, RottenLinks , that can list all external links and their status, it would tell which ones are broken. * Finally, there is a bot, IABot , in PHP. It looks very complete and manages dead links.
I don't have experience developing web backend, but I could try to help in what I can.
 https://www.mediawiki.org/wiki/DeadlinkChecker  https://www.mediawiki.org/wiki/Manual:Pywikibot  https://www.mediawiki.org/wiki/Manual:Pywikibot/weblinkchecker.py  https://www.mediawiki.org/wiki/Extension:RottenLinks  https://github.com/internetarchive/internetarchivebot
Best regards. Joan.