Leadtools.Caching Introduction

Summary

The Leadtools.Caching assembly provides the classes needed for creating and using the document cache system used by a large portion of the LEADTOOLS Document assemblies.

The LEADTOOLS Document Web Service requires a cache. Web methods are sessionless by nature: with cache support, the web service can SaveToCache and LoadFromCache to save/load the document state in-between calls, without the need for session states.

In almost all cases, the cache object is initialized and set into Cache at the start of the application, and then never touched. The DocumentFactory and Document classes use this global value for all caching needs.

Key Features

• Supports writing to an external cache.
• Alleviates the need to store large numbers of pages and huge amounts of data in the physical memory (which might not even be feasible).
• Improves performance when getting page data such as an image or text. Data is parsed only once from the physical file on disk. Subsequent calls to the same data are from the cache, without any extra processing.

See Also

Reference

Supported Environments
Assembly Overview

Getting Started (Guide to Example Programs)

Document Toolkit and Caching

Version History

Leadtools.Caching Assembly Changes