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rolling-queue-0.1: Bounded channel for STM that discards old entries when full

The rolling-queue package

This package provides a FIFO channel for STM supporting a size limit. When this limit is reached, older entries are discarded to make way for newer entries.

The motivation for this is logging. If log entries are written to a plain TChan, the program will use a lot of memory if it produces log entries faster than they can be processed. If log entries are written to a bounded channel where writes block (e.g. the stm-chans package), the program may deadlock if the log channel fills up. With Data.STM.RollingQueue, old entries will be discarded instead.

Possible improvements (not available in Data.STM.RollingQueue) include:

• Discard lower-priority entries first.

• Discard every other entry, so some of the older entries will still be available.

Properties

Modules

Downloads

• rolling-queue-0.1.tar.gz (Cabal source package)
• package description (included in the package)

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