Coyote Point Systems Equalizer Especificaciones descargar pdf (Pagina 37)

100

101

Persistence

The

persistence

session data

is important when a client and server need to refer to data previously generated

again and again as they interact over more than one transaction, possibly more than one connection. Whenever a

client places an item in a shopping cart, for example, session data (the item in the cart, customer information, etc.)

is created that potentially needs to persist across many individual TCP connections before the data is no longer

needed and the session is complete.

It’s important to note that

session persistence

is managed by the server application, not Equalizer. Equalizer

provides

server persistence

so that a

persistent connection

between a particular client and a particular server can

be maintained; this supports a client-server session where session data is being maintained on the server for the

life of the connection. In other words, whether you need to enable persistence on Equalizer depends on the

application you are load balancing.

Equalizers have no knowledge of the fact that the user has placed something in a shopping cart, logged into a web

application, requested a file from shared storage, or made a "post" in a front end presentation server that has been

written to a database. Basically, a "state" has been created in the load balanced application of which Equalizer is

Equalizer Administration Guide

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Coyote Point Systems Equalizer Especificaciones Pagina 37

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