▁affect ▁the ▁time ▁it ▁takes ▁for ▁pages ▁to ▁render . ▁The ▁performance ▁of ▁the ▁web ▁page ▁can ▁be ▁improved ▁through ▁techniques ▁such ▁as ▁multi - layer ed ▁cache , ▁light ▁weight ▁design ▁of ▁presentation ▁layer ▁components ▁and ▁asynchronous ▁communication ▁with ▁server ▁side ▁components . ▁ ▁History ▁In ▁the ▁first ▁de cade ▁or ▁so ▁of ▁the ▁web ' s ▁existence , ▁web ▁performance ▁improvement ▁was ▁focused ▁mainly ▁on ▁optim izing ▁website ▁code ▁and ▁pushing ▁hardware ▁limitations . ▁According ▁to ▁the ▁ 2 0 0 2 ▁book ▁Web ▁Performance ▁Tun ing ▁by ▁Patrick ▁K ille lea , ▁some ▁of ▁the ▁early ▁techniques ▁used ▁were ▁to ▁use ▁simple ▁serv lets ▁or ▁CG I , ▁increase ▁server ▁memory , ▁and ▁look ▁for ▁packet ▁loss ▁and ▁re trans mission . ▁Although ▁these ▁principles ▁now ▁compr ise ▁much ▁of ▁the ▁optimized ▁foundation ▁of ▁internet ▁applications , ▁they ▁differ ▁from ▁current ▁optimization ▁theory ▁in ▁that ▁there ▁was ▁much ▁less ▁of ▁an ▁attempt ▁to ▁improve ▁the ▁browser ▁display ▁speed . ▁ ▁Steve ▁S oud ers ▁co ined ▁the ▁term ▁" web ▁performance ▁optimization " ▁in ▁ 2 0 0 4 . ▁At ▁that ▁time ▁S oud ers ▁made ▁several ▁predictions ▁regarding ▁the ▁impact ▁that ▁W PO ▁as ▁an ▁" emer ging ▁industry " ▁would ▁bring ▁to ▁the ▁web , ▁such ▁as ▁websites ▁being ▁fast ▁by ▁default , ▁cons olid ation , ▁web ▁standards ▁for ▁performance , ▁environmental ▁impact s ▁of ▁optimization , ▁and ▁speed ▁as ▁a ▁differenti ator . ▁ ▁One ▁major ▁point ▁that ▁S oud ers ▁made ▁in ▁ 2