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v0.2.26 - Feature: Limit the size ZenCacheMemoryLayer may use - `--cache-memlayer-targetfootprint` option to set which size (in bytes) it should be limited to, zero to have it unbounded - `--cache-memlayer-maxage` option to set how long (in seconds) cache items should be kept in the memory cache - Feature: Add lightweight GC that only removes items from cache/project store without cleaning up data referenced in Cid store - Add `skipcid` parameter to http endpoint `admin/gc`, defaults to "false" - Add `--skipcid` option to `zen gc` command, defaults to false - Add `--gc-lightweight-interval-seconds` option to zenserver - Bugfix: Correctly calculate the total number of RPC ops in the stats page for structured cache - Bugfix: Change "chunks" title to "count" for RPC chunk requests in stats page for structured cache - Bugfix: Sentry username string no longer includes the trailing NUL - Bugfix: Fix scrub messing up payload and access time in disk cache bucket when compacting index - Bugfix: Cache bucket index of chunks in block store could get corrupted after a GC - Bugfix: Probe disk for existsing block file before writing a new block - Bugfix: IoBufferBuilder::ReadFromFileMaybe did not propagate content type to a new IoBuffer - Bugfix: IoBufferBuilder::ReadFromFileMaybe Linux/MacOS pread success/error condition check was incorrect - Bugfix: Memory cache layer could end up holding references to file handles between GC runs, delaying file deletion - Improvement: Split up disk cache bucket index into hash lookup and payload array to improve performance - Improvement: Reserve space up front for compact binary output when saving cache bucket manifest to improve performance - Improvement: Reduce time a cache bucket is locked for write when flushing/garbage collecting - Change format for faster read/write and reduced size on disk - Don't lock index while writing manifest to disk - Skip garbage collect if we are currently in a Flush operation - BlockStore::Flush no longer terminates currently writing block - Garbage collect references to currently writing block but keep the block as new data may be added - Fix BlockStore::Prune used disk space calculation - Don't materialize data in filecas when we just need the size - Don't lock entire disk cache layer when doing GatherReferences/CollectGarbage - Improvement: Catch Out Of Memory and Out Of Disk exceptions and report back to requester without reporting an error to Sentry - Improvement: If creating bucket fails when storing an item in the structured cache, log a warning and propagate error to requester without reporting an error to Sentry - Improvement: Make an explicit flush of the active block written to in blockstore flush - Improvement: Make sure cache and cas MakeIndexSnapshot does not throw exception on failure which would cause and abnormal termniation at exit - Improvement: http.sys I/O completion handler no longer holds transaction lock while enqueueing new requests. This eliminates some lock contention and improves latency/throughput for certain types of requests - Improvement: date logging in GC no longer emits extraneous newlines - Improvement: named main thread and thread handle cache thread - Improvement: removed websockets support as it is not used and likely won't be used in the future - Improvement: added `--quiet` command line option which can be used to suppress all stdout logging #jira #rb [CL 28507244 by dan engelbrecht in ue5-main branch]