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Content Tagged with License:ASF2.0 + Server

Clustered Remoting for Spring Framework (Cluster4Spring) represents an alternative implementation of the remoting subsystem of Spring framework and provides possibilities to build more stable and fault tolerant systems with dynamic discovering of remote services. Cluster4Spring uses Apache 2.0 license that allows using it both in commercial and non-commercial products.

Briefly, the major features of Cluster4Spring library are:

• Support of one-to-one scheme of remoting (similar to one currently supported by Spring);

• Support of one-to-many scheme of remoting, which assumes that one client selects remote service for invocation from one of predefined locations;

• Support of one-to-many scheme of remoting with dynamic discovering of remote services;

• Several built-in policies for selecting remote service for invocation are included (they are applied if service is available in several locations);
• Built-in functionality for handling remoting exceptions of method invocations that provides ability to re-invoke remote service using different service location automatically;
• Steep learning curve since ideological implementation of Cluster4Spring bears a close resemblance to the implementation of remoting in Spring;
• Non-intrusive for existing applications – it is simply enough to change appropriate remoting-related Spring configuration files to start using Cluster4Spring;
• Provides a convenient way to add custom interceptors both on client and server side;
• Flexible and modular architecture which is ready for further extensions and customizations;
• Library is stable and ready to use;

Another feature, which is currently missing in remoting subsystem offered by Spring framework, is lack of the ability to dynamically discover remote services.

The main purpose of Cluster4Spring is to extend remoting system of Spring framework and overcome limitations mentioned above.

The Cluster4Spring library was developed in SoftAMIS, a Ukraine based software development company specialized on Java and Web development outsourcing services. To find more about SoftAMIS, our services, skills and experience, please visit our site –

http://www.soft-amis.com

The home page of Cluster4Spring is located here

Geronimo or Geronimo Application Server is a J2EE server project at the Apache Software Foundation, compatible with J2EE 1.4. The project is heavily influenced and sponsored by IBM.

Geronimo has a modular architecture, designed to avoid a unnecessarily heavy server instance. The architecture consists of a microkernel and various components that are indirectly included using an Inversion of Control pattern. This modularity means that various pieces of Geronimo may be swapped around without significant impact on the rest of the application server.

Various Java middleware components are packaged to comprise a default Geronimo app-server:

• JMS – ActiveMQ
• EJB Container – OpenEJB
• SOAP Framework – Apache Axis
• DBMS – Derby
• Web application framework – Tomcat and Jetty (due to the modularity of Geronimo, these are swappable)