rndc flushname not working

[Frank Even]

On Sat, Apr 11, 2015 at 6:49 AM, Tony Finch <dot at dotat.at> wrote:
> There was a bug in 9.9 and earlier that rndc flushtree only flushed the main cache, not adb or bad cache. This was fixed in 9.10 - see item 3606 in the CHANGES file.

...and where could I find info on what is stored in ADB and any other
particular items that flushname might not deal with?  That's where my
frustration largely is, that I can't find clear documentation on this
point.