Version 2.1 Adds Advanced Features

Version 2.1 adds important new capabilities that let applications easily use ScaleOut StateServer as a scalable, distributed cache that spans a server farm. By integrating these new capabilities with patent pending support for scalability and high availability, ScaleOut StateServer offers the most comprehensive distributed caching solution on the market. Read on to learn about Version 2.1’s new capabilities.

Automatic Memory Reclamation

In times of peak traffic, it is possible that a shortage of available server memory could occur, making it impossible to cache new objects. Version 2.1 now detects when memory consumption reaches a configurable threshold and automatically reclaims memory used by the least recently accessed objects. Memory reclamation is automatically triggered across the server farm when any server reaches the threshold. This keeps the distributed cache’s overall memory consumption below a specified limit.

To customize memory reclamation, stored objects can be optionally marked as reclaimable. Asynchronous events are signaled to the distributed application after objects are expired, and the event handler allows the application to inhibit removal of the object from the distributed cache.

Expiration Based on Object Dependencies

Stored objects now can be expired and removed from the distributed cache based on dependency relationships to other stored objects. Whenever any object is updated or removed from the store, other objects upon which it depends are marked for removal after signaling an asynchronous expiration signal to the application. This allows a group of logically related objected objects to be automatically expired when dependent data has changed.

Expiration Using Fixed Timeouts

Version 2.1 adds support for optionally expiring objects after a fixed timeout interval in addition to a sliding interval. Now objects can be automatically removed from the distributed cache after a time period that is independent of when the object was last accessed.

X64 Support

Version 2.1 also introduces an x64 version of ScaleOut StateServer, providing you with the flexibility to run the latest Windows O/S on the latest hardware and take advantage of the higher memory limit on x64 systems. The x64 version is fully compatible with the 32-bit version so that 32-bit and 64-bit servers can interoperate on the same server farm.

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