If the indexed_search extension is not working on your TYPO3 web site, be sure that caching is enabled for the pages that you wish to index
January 28, 2019
I had a bit of an annoying waste of time today when I was hunting down the cause of the indexed_search extension not indexing a TYPO3 web site.
The problem for me was that I had the cache disabled in my typoscript template.
It was set as:
config.no_cache = 1
And then changing it to the following fixed it:
config.no_cache = 0
After that, indexing worked just fine. I indexed the site and after all was indexed, I set config.no_cache back to "1" because I wanted caching to be disabled while I was developing my site.