French cheese following -- not lasting long (5)
I believe the answer is:
brief
'not lasting long' is the definition.
(I've seen this before)
'french cheese following' is the wordplay.
'french cheese' becomes 'brie' (I've seen this before).
'following' becomes 'f.' (used when citing page numbers etc).
'brie'+'f'='BRIEF'
(Other definitions for brief that I've seen before include "Short or concise" , "Succinct" , "not lasting long" , "Solicitor" , "Prime" .)