Download A practical guide to content delivery networks by Gilbert Held PDF

By Gilbert Held

Defining the fashionable content material supply community as a bunch of geographically dispersed servers deployed, frequently through 3rd events, to facilitate the distribution of knowledge generated by means of world-wide-web publishers in a well timed and effective demeanour, Held examines their position in facilitating the distribution of assorted different types of net site visitors, starting from regular websites to streaming video and audio. He describes how such networks function, the benefits and downsides linked to utilizing them, and features of net structure and protocols which are essential to comprehend the appliance of the networks. Readers are assumed to be development human-resource or monetary purposes, sites, or related providers. dispensed within the US through CRC.

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Some text goes here Hyper Text links The Web represents a set of network accessible information resources constructed on three basic ideas.

For example, using Cold Fusion you could create a Web page that asks a user for their sex and age, information that would be used by a Web server to query a database for an insurance premium that would be presented in HTML code for display on the user’s browser. The second tool, ODBC, represents a standard database access method developed by the SQL Access group. By inserting a middle layer, called a database driver, between an application and the database management system (DBMS), it is possible to access data from any application regardless of which DBMS is handling the data.

Tracert invokes a series of ICMP Echo messages that vary the time-to-live (TTL) field in the IP header. The first IP datagram that transports the ping has a TTL field value of one. Thus, when the datagram reaches the first router along the path to the destination, the router decrements the TTL field value by one and since the result is zero, throws the datagram into the great bit bucket in the sky and returns an ICMP message Type 11 (Time Exceeded) to the originator. The ICMP message returned to the sender includes the router’s IP address and may include information about the router.

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