It can depend on the pistol. For example, recoil springs on the 3" & 3-1/2" 1911s are recommended to be changed more often than the 5". I've read as low as 500 rounds for the 3" & as high as 5000 rounds for the 5".
Personally, I suspect these round counts are on the conservative side & if it's just a range gun, maybe have a spare on hand & don't worry about it until it stops feeding properly. For a SD pistol, what's the cost of a spring when compared to piece of mind?