Redundant Data Transfers
When multiple clients access a popular origin server page, the server transmits the same document multiple times, once to each client. The same bytes travel across the network over and over again. These redundant data transfers eat up expensive network bandwidth, slow down transfers, and overload web servers. With caches, the cache keeps a copy of the first server response. Subsequent requests can be fulfilled from the cached copy, reducing wasteful, duplicate traffic to and from origin servers.
Get HTTP: The Definitive Guide now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
