[Zope] standard cache manager 2.3.x and 2.4.x

hi all i'm currently running my sites on 2.3.x, and would really like to try out ram cache. however, the one that came with 2.3.x dont have a max_age, and therefore can't be invalidated automatically. would copying over StandardCacheManager from 2.4.1 to 2.3.x be advisable? anybody tried this successfully? tia