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IBM WebSphere eXtreme Scale 6 by Anthony Chaves

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Chapter 1. What is a Data Grid

We have many software packages which make up the so-called "middleware" layer. Application servers, message brokers, enterprise service buses, and caching packages are examples of this middleware layer that powers an application. The last few years have seen the introduction of more powerful caching solutions that can also execute code on objects stored in the cache. The combination of a shared cache and executable code spread over many processes is a data grid.

Caching data is an important factor in making an application feel more responsive, or finish a request more quickly. As we favor horizontal scale-out more, we have many different processes sharing the same source data. In order to increase processing speed, ...

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