A dictionary (key/value) based caching protocol.

SwifterSockets is part of the Swiftfire webserver.

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The Reference manual


A key/value based caching mechanism with an implementation for an in-memory cache.

The cache can be limited in size by either a maximum number of items or a maximum memory usage.

If a new item must be placed and an old item must be purged, the purging strategy can be either least recently used or least used.

To allow limiting by size, items to be stored in the cache must implement the EstimatedMemoryConsumption protocol. A default implementation is provided if this limiting strategy is not used. When using this strategy, the EstimatedMemoryConsumption should make a best guess at the memory consumption. The better the guess the better this limiting strategy will work. Note that for many (most?) uses it will not be necessary to use exact values.

Version history

No new features planned. Updates are made on an ad-hoc basis as needed to support Swiftfire development.


  • Added remove operation to the cache protocol


  • Documentation updates


  • Documentation updates


  • To accompany Swiftfire 1.0.0