Advantages of Application Servers
- Data and code integrity
- By centralizing business logic on an individual server or on a small number of server machines, updates and upgrades to the application for all users can be guaranteed. There is no risk of old versions of the application accessing or manipulating data in an older, incompatible manner.
- Centralized configuration
- Changes to the application configuration, such as a move of database server, or system settings, can take place centrally.
- Security
- A central point through which service providers can manage access to data and portions of the application itself counts as a security benefit, devolving responsibility for authentication away from the potentially insecure client layer without exposing the database layer.
- Performance
- By limiting the network traffic to performance-tier traffic, the client–server model improves the performance of large applications in heavy usage environments.
- Total Cost of Ownership (TCO)
- In combination, the benefits above may result in cost savings to an organization developing enterprise applications. In practice, however, the technical challenges of writing software that conforms to that paradigm, combined with the need for software distribution to distribute client code, somewhat negate these benefits.
- Transaction Support
- A transaction represents a unit of activity in which many updates to resources (on the same or distributed data sources) can be made atomic (as an individual unit of work). End-users can benefit from a system-wide standard behaviour, from reduced time to develop, and from reduced costs. As the server does a lot of the tedious code-generation, developers can focus on business logic.
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