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Appistry Grid-Enables Apps Without Recoding


EAF 3.5 eliminates perceived barrier to grid solution

By David Worthington
April 15, 2007 — 
Appistry is simplifying what it takes for developers to weave applications into its commodity-hardware grid environment. The company claims that Enterprise Application Fabric 3.5 (EAF), announced last month, eliminates the need to refactor applications to run in a distributed manner, and delivers new capabilities for stateful applications.

The Appistry platform is a distributed application grid that scales application performance and fault tolerance exponentially to the number of nodes that are added. Nodes are composed of “white-box” x86 hardware running Linux and Windows; developers address the grid as a single device.

The main thrust of EAF 3.5 is to make it easier for developers to leverage the grid environment, said Sam Charrington, vice president of product management and marketing for Appistry. Charrington argued that the perceived need to recode applications has been a barrier to enterprises thinking about adopting grid solutions.

Previous versions of Appistry required new code from a corollary architecture to become “distributed-aware.” An API allowed Appistry to access state information, while application parameters were given to applications through the API, which arbitrated the information going in and out of the code, said Charrington.

In contrast, EAF 3.5 annotates POJO (Plain Old Java Object), PONO (Plain Old .NET Object) and C/C++ applications with source-level metadata. Appistry reads the metadata and incorporates the applications into its distributed application fabric.

Another new feature is FAM (Fabric Accessible Memory). FAM is an in-memory data grid for application state information. Appistry treats RAM from individual computers as a single resource, so developers can “push” the working state of applications into FAM, said Charrington.


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