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* statsd metrics reporting (#496)Stefan Boberg2023-10-252-11/+38
| | | | | added support for reporting metrics via statsd style UDP messaging, which is supported by many monitoring solution providers this change adds reporting only of three cache related metrics (hit/miss/put) but this should be extended to include more metrics after additional evaluation
* merge disk and memory layers (#493)Dan Engelbrecht2023-10-247-1121/+785
| | | | - Feature: Added `--cache-memlayer-sizethreshold` option to zenserver to control at which size cache entries get cached in memory - Changed: Merged cache memory layer with cache disk layer to reduce memory and cpu overhead
* Remove any unreferenced blocks in block store on open (#492)Dan Engelbrecht2023-10-232-9/+4
| | | * Remove any unreferenced blocks in block store on open
* Filter expired cache entries against ExpiredKeys - not CAS entries to retain ↵Dan Engelbrecht2023-10-231-40/+23
| | | | (#491)
* Don't prune block locations due to missing blocks a startup (#487)Dan Engelbrecht2023-10-202-57/+11
| | | | | | * Don't prune block locations due to missing blocks a startup This makes the behaviour consistent with FileCas - you can have an index that is not fully backed by data. Asking for a location that is not backed by data results in getting an empty result back Also, don't try to GC blocks that are unknown to the block store at the time of snapshot (to avoid removing data that comes in after GatherReferences in GC)
* Cache (rpc) activitity recording improvements (#482)Stefan Boberg2023-10-201-6/+19
| | | | | | | this adds a new RPC recording path aimed at more continuous recording and analysis of recorded sessions the new strategy is implemented alongside the original in order to retain the ability to read the older format the main difference between v2 and v1 is that the new strategy splits the recording into segments which are independent from each other. This is done to enable long running sessions with automatic disk cleanup (not implemented yet), appending to an existing recording (not implemented) and/or partial analysis and processing. The recorder will start a new segment when some criteria is fulfilled, including the number of files in the segment directory, disk footprint etc
* clean up GcContributor and GcStorage to be pure interfaces (#485)Dan Engelbrecht2023-10-202-2/+7
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* Add --skip-delete option to gc command (#484)Dan Engelbrecht2023-10-201-1/+1
| | | | - Feature: Add `--skip-delete` option to gc command - Bugfix: Fix implementation when claiming GC reserve during GC
* add `flush` command and more gc status info (#483)Dan Engelbrecht2023-10-182-5/+8
| | | | | | - Feature: New endpoint `/admin/flush ` to flush all storage - CAS, Cache and ProjectStore - Feature: New command `zen flush` to flush all storage - CAS, Cache and ProjectStore - Improved: Command `zen gc-status` now gives details about storage, when last GC occured, how long until next GC etc - Changed: Cache access and write log are disabled by default
* removed unnecessary vector in ZenCacheMemoryLayer::DropStefan Boberg2023-10-171-3/+2
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* fix mem layer total count (#480)Dan Engelbrecht2023-10-172-6/+17
| | | * fix calculation of ZenCacheMemoryLayer::m_TotalSize
* minor - fix references size arrayDan Engelbrecht2023-10-171-0/+2
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* don't call compact references if caching is not enabled (#478)Dan Engelbrecht2023-10-171-6/+12
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* cache reference tracking (#455)Dan Engelbrecht2023-10-105-182/+577
| | | | | - Feature: Add caching of referenced CId content for structured cache records, this avoid disk thrashing when gathering references for GC - disabled by default, enable with `--cache-reference-cache-enabled` - Improvement: Faster collection of referenced CId content in project store
* reject bad bucket reads (#456)Stefan Boberg2023-10-093-5/+16
| | | | * extended bad bucket rejection logic to include GET operations as well as PUTs
* fix memory usage in memlayer (#454)Dan Engelbrecht2023-10-062-15/+4
| | | * Bugfix: Remove double counting of memory usage in memcachelayer
* reject known bad bucket names in structured cache (#452)v0.2.27-pre0Stefan Boberg2023-10-065-8/+69
| | | | | | | * added string_view helpers for ParseHexBytes/ParseHexNumber * reject known bad buckets in structured cache put handler (32-character hex bucket names are rejected) * also added bucket rejection logic to bucket discovery * added rejected_writes stat to HttpStructuredCache
* ZenCacheMemoryLayer should always store values using memory buffers (#451)Stefan Boberg2023-10-051-3/+4
| | | | | | | | this change fixes a problem where the memory cache layer can inadvertently prevent underlying block store files from being deleted * ensure we get memory buffers on all paths * added more context to error in IoBufferBuilder::ReadFromFileMaybe * fixed problematic pread call success check in IoBufferBuilder::ReadFromFileMaybe which would always report failure on Linux/MacOS
* Fix curruption of disk cache bucket index on GC (#448)Dan Engelbrecht2023-10-052-45/+54
| | | | | | | | | * make sure we hold the index lock when reading payload data in reclaim space * don't use index snapshot when updating index in reclaim space * check that things have not moved under our feet * don't touch m_Payloads without a lock * start write block index on the highest block index * we don't need to bump writeblockindex when stopping write to a block, we will bump appropriately when we start a new block * changelog
* reduce lock in disklayer (#447)Dan Engelbrecht2023-10-051-10/+22
| | | * Don't block all write access to all buckets when doing GatherReferences/CollectGarbage
* fix HandleRpcRequest::WriteResponseAsync trace scope when we are not running ↵Dan Engelbrecht2023-10-041-1/+2
| | | | async
* refactor comapactcas index (#443)Dan Engelbrecht2023-10-041-3/+10
| | | | | - Bugfix: Fix scrub messing up payload and access time in disk cache bucket when compacting index - 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
* faster accesstime save restore (#439)Dan Engelbrecht2023-10-033-132/+252
| | | | | | | | | | - 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
* Handle OOM and OOD more gracefully to not spam Sentry with error reports (#434)Dan Engelbrecht2023-10-021-10/+25
| | | | | | - Improvement: Catch Out Of Memory and Out Of Disk exceptions and report back to reqeuster without reporting an error to Sentry - Improvement: If creating bucket fails when storing and 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
* Limit size of memory cache layer (#423)Dan Engelbrecht2023-10-024-46/+285
| | | | | | | | - 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 Do more "standard" GC rather than clearing everything. Tries to purge memory on Get/Put on the fly if exceeding limit - not sure if we should have a polling thread instead of adding overhead to Get/Put (however light it may be).
* lightweight gc (#431)Dan Engelbrecht2023-10-021-0/+5
| | | | | | - 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
* Correctly calculate the total number of RPC ops in the stats page for ↵Dan Engelbrecht2023-09-291-2/+2
| | | | | structured cache (#433) Change "chunks" title to "count" for RPC chunk requests in stats page for structured cache
* move badrequest count back to old scope for compatability with Zen DashboardDan Engelbrecht2023-09-281-2/+1
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* adding more stats (#429)Dan Engelbrecht2023-09-288-44/+351
| | | | | - Feature: Add detailed stats on requests and data sizes on a per-bucket level, use parameter `cachestorestats=true` on the `/stats/z$` endpoint to enable - Feature: Add detailed stats on requests and data sizes on cidstore, use parameter `cidstorestats=true` on the `/stats/z$` endpoint to enable - Feature: Dashboard now accepts parameters in the URL which is passed on to the `/stats/z$` endpoint
* prefer to handle cache RPC requests synchronously (#428)Stefan Boberg2023-09-271-4/+17
| | | | | * only handle RPC requests in a worker thread if we have an upstream. we may as well handle the request inline on the http_io thread if we're only dealing with local data since the response times should be pretty consistent in that case * http.sys: don't create async worker thread pool until it's needed (typically only if we have an upstream)
* Add runtime status/control of logging (#419)Dan Engelbrecht2023-09-223-16/+44
| | | | | | | | | | | - Feature: New endpoint `/admin/logs` to query status of logging and log file locations and cache logging - `enablewritelog`=`true`/`false` parameter to control cache write logging - `enableaccesslog`=`true`/`false` parameter to control cache access logging - `loglevel` = `trace`/`debug`/`info`/`warning`/`error` - Feature: New zen command `logs` to query/control zen logging - No arguments gives status of logging and paths to log files - `--cache-write-log` `enable`/`disable` to control cache write logging - `--cache-access-log` `enable`/`disable` to control cache access logging - `--loglevel` `trace`/`debug`/`info`/`warning`/`error` to set debug level
* VFS implementation for local storage service (#396)Stefan Boberg2023-09-204-3/+57
| | | currently, only Windows (using Projected File System) is supported
* add DiskWriteBlocker to structured cache store log writer (#408)Dan Engelbrecht2023-09-152-31/+43
| | | | | * add DiskWriteBlocker to structured cache store log writer * changelog
* add more trace scopes (#362)Dan Engelbrecht2023-09-154-130/+212
| | | | | * more trace scopes * Make sure ReplayLogEntries uses the correct size for oplog buffer * changelog
* More statistics for Cache, Project Store and Cid Store (#405)Dan Engelbrecht2023-09-142-5/+56
| | | | | Cache: requestcount, badrequestcount, writes Project Store: requestcount Cid Store: cidhits, cidmisses, cidwrites
* issue warning instead of assert on bad data in cid store (#400)Dan Engelbrecht2023-09-131-10/+14
| | | * issue warning instead of assert on bad data in cid store
* ZenCacheStore is now reference counted (#398)Stefan Boberg2023-09-132-2/+13
| | | this change also adds a GetNamespaces function which may be used to enumerate all currently known cache namespaces
* gracefully handle errors when writing cache log (#391)Dan Engelbrecht2023-09-111-29/+50
| | | | | | | * gracefully handle errors when writing cache log * changelog * fix log message
* add `cache-write-log` and `cache-access-log´ configuration options (#394)Dan Engelbrecht2023-09-111-0/+2
| | | * add `cache-write-log` and `cache-access-log´ configuration options
* Minor: Make sure to reset cache logging worker thread event to avoid ↵Dan Engelbrecht2023-08-241-0/+1
| | | | busy-looping looking for more work
* Cache process handles for FormatPackageMessage (#360)Dan Engelbrecht2023-08-172-6/+15
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* single thread async cache log (#361)Dan Engelbrecht2023-08-173-124/+149
| | | | * rework cache store background jogging * correct capture for context
* skip upstream logic early if we have no upstream endpoints (#359)Dan Engelbrecht2023-08-173-37/+77
| | | | | * Skip upstream logic early if we have not upstream endpoints * make cache store logging of CbObjects async * changelog
* update vcpkg dependencies (#356)Dan Engelbrecht2023-08-111-1/+2
| | | | | | * bump vcpkg version * fmt lib 10 fixes * xmake dependencies (with linux workarounds) * changelog
* Increase retry logic (#325)Dan Engelbrecht2023-06-051-13/+19
| | | | * Increase timeout and number of retries in CacheBucket::PutStandaloneCacheValue when moving temporary file into place * changelog
* cache log sessionid (#297)Stefan Boberg2023-05-234-168/+244
| | | | | | | | | | | * implemented structured cache logging to be used as audit trail to help analyse potential cache pollution/corruption * added common header to all known log targets * made Oid::operator bool explicit to avoid logging/text format mishaps * HttpClient::operator bool -> explicit * changed cache logs to not rotate on start in order to retain more history * added CacheRequestContext * properly initialize request context * log session id and request id on zencacehstore get/put * changelog
* minor: fixed typos in log output (PUTCACEHRECORD -> PUTCACHERECORD)Stefan Boberg2023-05-221-2/+2
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* fix for commented-out code which was never meant to be checked inStefan Boberg2023-05-171-6/+6
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* Restructured structured cache store (#314)Stefan Boberg2023-05-179-2809/+2882
| | | | This change separates out the disk and memory storage strategies into separate cpp/h files to improve maintainability.
* Content scrubbing (#271)Stefan Boberg2023-05-161-135/+290
| | | Added zen scrub command which may be triggered via the zen CLI helper. This traverses storage and validates contents either by content hash and/or by structure. If unexpected data is encountered it is invalidated.
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