2.4.6. Log Handler Types

The following table lists the different types of log handlers available in JBoss Data Grid:

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Table 2.3. Log Handler Types
Log Handler Type	Description
Console	Console log handlers write log messages to either the host operating system’s standard out (`stdout`) or standard error (`stderr`) stream. These messages are displayed when JBoss Data Grid 6 is run from a command line prompt. The messages from a Console log handler are not saved unless the operating system is configured to capture the standard out or standard error stream.
File	File log handlers are the simplest log handlers. Their primary use is to write log messages to a specified file.
Periodic	Periodic file handlers write log messages to a named file until a specified period of time has elapsed. Once the time period has elapsed, the specified time stamp is appended to the file name. The handler then continues to write into the newly created log file with the original name.
Size	Size log handlers write log messages to a named file until the file reaches a specified size. When the file reaches a specified size, it is renamed with a numeric prefix and the handler continues to write into a newly created log file with the original name. Each size log handler must specify the maximum number of files to be kept in this fashion.
Async	Async log handlers are wrapper log handlers that provide asynchronous behavior for one or more other log handlers. These are useful for log handlers that have high latency or other performance problems such as writing a log file to a network file system.
Custom	Custom log handlers enable to you to configure new types of log handlers that have been implemented. A custom handler must be implemented as a Java class that extends `java.util.logging.Handler` and be contained in a module.

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