I used to have histdb set up really well with r-i-search etc. but recently I can't get it to really do that any more. It's a pity. Does anyone have a histdb + f

I used to have histdb set up really well with r-i-search etc. but recently I can't get it to really do that any more. It's a pity. Does anyone have a histdb + fzf r-i-search solution that works well for them?