June 2008
Beginner to intermediate
160 pages
4h 48m
Polish
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Rozdział 3. Reguła 1. Wykonywanie mniejszej liczby żądań HTTP
Jak wyjaśniono w Rozdział 1 wskazuje, że tylko 10 – 20% czasu udzielania odpowiedzi na żądanie użytkownika jest wykorzystywane do pobierania dokumentu HTML. Pozostałe 80 – 90% czasu zajmuje wykonanie żądań HTTP pobierających wszystkie elementy (obrazy, skrypty, arkusze stylów, pliki Flash itd.) używane w dokumencie HTML. Dlatego też prostym sposobem skrócenia czasu wczytywania strony jest zmniejszenie liczby jej elementów, a przez to zmniejszenie liczby wykonywanych żądań HTTP.
Sugestia usuwania elementów strony często prowadzi do konieczności wypracowania kompromisu między wydajnością i projektem strony. W rozdziale zostaną opisane techniki redukcji żądań HTTP, które nie wymuszają podejmowania ...
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