September 2003
Intermediate to advanced
640 pages
18h 43m
English
Content preview from Flash Remoting: The Definitive Guide
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Architecture for Flash Remoting Applications
We conclude this chapter with a general overview of a client/server architecture using the Flash Player and the Flash Remoting gateway. Generally, Flash/server applications follow an n-tiered architecture. Figure 1-7 depicts such an architecture, comprising a client/presentation tier (the Flash Player), a middle tier (Flash Remoting gateway running within an application server), and a data tier (a database, XML file, or other data source).
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Figure 1-7. The Flash/server n-tiered application architecture
Presentation Tier
The presentation tier is responsible for the application’s user interface (UI) and any client-side logic that is needed, such as client-side data validation. It communicates with the middle tier by sending and loading data on a request-driven basis. In most cases, the presentation layer consists of a Flash file embedded within an HTML page, but it can also be a Flash Standalone Projector running on the desktop, or even a Flash sprite within a Director Projector.
Middle Tier
The middle tier sits between the presentation layer and the data source. Its primary role is to separate the presentation tier from the data tier and provide access to the data tier from the Flash Player. The core application logic is also normally implemented in the middle tier. This frees the client to do what it does best—presentation—and frees the server ...
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