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Added by Rob Misek, last edited by Mark Falco on Feb 10, 2006  (view change)

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async-store-manager

Used in: external-scheme, paged-external-scheme.

Description

The async-store-manager element adds asynchronous write capabilities to other store manager implementations.

Supported store managers include:

Implementation

This store manager is implemented by the com.tangosol.io.AsyncBinaryStoreManager class.

Elements

The following table describes the elements you can define within the async-store-manager element.

Element Required/Optional Description
<class-name> Optional Specifies a custom implementation of the async-store-manager.

Any custom implementation must extend the com.tangosol.io.AsyncBinaryStoreManager class and declare the exact same set of public constructors.
<init-params> Optional Specifies initialization parameters, for use in custom async-store-manager implementations which implement the com.tangosol.run.xml.XmlConfigurable interface.
<custom-store-manager> Optional Configures the external cache to use a custom storage manager implementation.
<bdb-store-manager> Optional Configures the external cache to use Berkeley Database JE on-disk databases for cache storage.
<lh-file-manager> Optional Configures the external cache to use a Coherence LH on-disk database for cache storage.
<nio-file-manager> Optional Configures the external cache to use a memory-mapped file for cache storage.
<nio-memory-manager> Optional Configures the external cache to use an off JVM heap, memory region for cache storage.
<async-limit> Optional Specifies the maximum number of bytes that will be queued to be written asynchronously. Setting the value to zero does not disable the asynchronous writes; instead, it indicates that the implementation default for the maximum number of bytes should be used.

The value of this element must be in the following format:
[\d]+[[.][\d]+]?[K|k|M|m]?[B|b]?

where the first non-digit (from left to right) indicates the factor with which the preceeding decimal value should be multiplied:

  • K (kilo, 210)
  • M (mega, 220)

If the value does not contain a factor, a factor of one is assumed.

Valid values are any positive memory sizes and {{zero.

Default value is 4MB.