Taken the idea and almost all semantics from this project: https://github.com/dertuxmalwieder/rssfs/ Completely rewritten for performance reasons (simply can't handle >100 feeds lol).
Program creates for RSS feed a directory:
/mnt/rssfs/Open Source Feed/
And in this directory there are files which contain rss entries of this feed:
/mnt/rssfs/Open Source Feed/Hello World.html
/mnt/rssfs/Open Source Feed/Second Article.html
Every time you ls feed directory it updates feed entries (may be a bit slow).
go install github.com/i1i1/rssfs
After that you should create rssfs.hcl file in your $XDG_CONFIG_HOME directory. Checkout example.