nio-file-manager

nio-file-manager

Used in: external-scheme, paged-external-scheme, async-store-manager.

Description

Configures an external store which uses memory-mapped file for storage.

Implementation

This store manager is implemented by the com.tangosol.io.nio.MappedStoreManager class. The BinaryStore objects created by this class are instances of the com.tangosol.io.nio.BinaryMapStore.

Elements

The following table describes the elements you can define within the nio-file-manager element.

Element Required/Optional Description
<class-name> Optional Specifies a custom implementation of the local cache.

Any custom implementation must extend the com.tangosol.io.nio.MappedStoreManager class and declare the exact same set of public constructors.
<init-params> Optional Specifies initialization parameters, for use in custom nio-file-manager implementations which implement the com.tangosol.run.xml.XmlConfigurable interface.
<initial-size> Optional Specifies the initial buffer size in megabytes.

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 or k (kilo, 210)
  • M or m (mega, 220)
  • G or g (giga, 230)
  • T or t (tera, 240)

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

Legal values are positive integers between 1 and Integer.MAX_VALUE - 1023.

Default value is 1MB.
<maximum-size> Optional Specifies the maximum buffer size in bytes.

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 or k (kilo, 210)
  • M or m (mega, 220)
  • G or g (giga, 230)
  • T or t (tera, 240)

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

Legal values are positive integers between 1 and Integer.MAX_VALUE - 1023.

Default value is 1024MB.

<directory> Optional Specifies the pathname for the root directory that the manager will use to store files in. If not specified or specifies a non-existent directory, a temporary file in the default location will be used.