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GemFire Adds Hierarchical Cache, 'C' API


By David Rubinstein
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December 1, 2003 —  Dynamic hierarchical caching and support for C/C++ applications and Java processes are among the new features in GemFire Suite 2.2, the data distribution, caching and management tool released in late October by GemStone Systems Inc.

GemStone, which was purchased for its J2EE technology by the German company Brokat in August 2000, split from Brokat in August 2001 and shifted its focus to data distribution. "Basically, [Brokat] was moving into mobile services, which is very popular in Europe," said Raj Kulkami, GemStone's chief technology officer. "We're focusing on gaps in messaging structures."

Kulkami noted that there is tremendous latency created when a number of applications move through middleware to access multiple data sources. "The bottleneck is moving data in vast environments," he said. GemFire, he explained, is a virtualized data layer that coexists with the middleware and either interrupts data service calls and supplies data from the cache, or makes the correct calls to the correct data sources and distributes the data where it needs to go.

The hierarchical caching allows applications to move data efficiently from multiple data stores to so-called edge caches, which serve large numbers of seats needing to access that data. "The edge caches talk fault-tolerantly with caches on the server," which he claimed help to reduce traffic to the database servers, and improve scalability and performance.

A new C/C++ API enables applications written in those languages to gain native cache access, Kulkami added.

The GemFire suite consists of a symmetrical multiprocessing module, a data integration and distribution element and an XML integration module for pulling together data from multiple sources into an XML cache. Pricing is per CPU; Kulkami would not disclose the price.




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