feat: cache GUIDs without any unit IDs mappings for later removal #972
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Keep a cache of the last 100 unused GUIDs that no longer have unit
IDs associated with them. Once they are evicted from the cache,
remove all other information tracked by the
guid
module for thoseGUIDs. This prevents the number of GUID-to-name mappings from
growing without bound, and frees up some memory for garbage
collection.