I made a very similar product, but you're layout is much more polished.

Using it as personal kb too, i also crawl the top HN pages instead of mirroring it separately. I consider it another source of interesting links.

https://handlr.sapico.me/ Here is HN: http://handlr.sapico.me/Home/ByTag?Name=hn

Good luck, it's a difficult market for this type of product. I still think it's the perfect use-case, but people outside of HN/reddit? don't really "get it".

How old/big is you're dataset and how is your db handling it? I've got lots of data+tags and it tends to get a bit slower ( I've optimized it a bit already, but it still needs some work)

Note : dogfooding it

Ps. I think Gpt 2 for the tags would be decent enough + much cheaper.