HOW MUCH YOU NEED TO EXPECT YOU'LL PAY FOR A GOOD 454SS FOR SALE

The max-stale directive is employed by a client to indicate that they will acknowledge stale HTTP responses as much as a certain number of seconds. This differs from max-age, as max-stale starts when the max-age expires.The max-age directive is shipped by a server to indicate that the HTTP reaction will remain fresh for a specified amount of second