I'm afraid refetch will not provide a relief in your case as it is directed at refreshing *flushed* and not *invalidated* content, and what describe is a problem with excessive invalidation.The only solution is to find ways to limit the scope of auto-invalidation. The suggested solution to split pag...

Just be sure to disable those agents from reacting to normal replication requests.They shall work be strictly in "on explicit demand" mode, otherwise you'll risk stale content race conditions (annoying and difficult to reproduce)

How could tag store be implemented on filesystem level: 1. Apart from main cache content folder like /var/cache/www/sites one would have 2nd tag store folder e.g. /var/cache/www/tags within that folder we would have subfolders, one per tag e.g. tags->        tag1        tag2        tag3 Those folder...

Request for Feature Enhancement (RFE) Summary:Add 3rd invalidation processing mode in AEM dispatcher based not on paths but tags.Use-case:Currently dispatcher supports either statfile level based or ttl based page invalidation. Those two approaches can't be reliably combined (with dispatcher 4.3.5) ...