- Identify payloads by the hash of the raw data.
- Added FCacheKey::Empty and FCachePayloadKey::Empty for convenience.
- Changed FCacheRecord and FCacheRecordBuilder constructors to be private.
- Changed storage in the legacy cache to store values inline for records with no attachments.
- Changed storage in the legacy cache to use CAS within each bucket.
- Improved wording and details in assert messages.
#rb Zousar.Shaker
#rnx
[CL 15984411 by Devin Doucette in ue5-main branch]
Still allows build machine runs to be thorough about completing PUTs.
Doesn't interrupt any in-flight PUTs, just prevents processing of any remaining queued PUTs.
#jira UE-112179
#rb devin.doucette
[CL 15920539 by Zousar Shaker in ue5-main branch]
- Removed the "Cache" prefix from ECachePriority, FCacheRequest, ICacheRequest, FCachePayload, FCachePayloadId to allow reuse in the Build API.
- Added FCompressedBuffer as the starting point for the API for creating and accessing compressed buffers.
#rb Zousar.Shaker
#rnx
[CL 15511723 by Devin Doucette in ue5-main branch]
- FCacheRecord must now be created by FCacheRecordBuilder.
- FCacheRecord values are always an opaque buffer now, and ECacheRecordType has been removed.
- FCachePayload has been added as a common type for the cache record value and attachments.
- FCachePayloadId has been added as a 12-byte identifier for cache payloads.
- ICache::GetAttachments is now GetPayloads and can fetch both values and attachments.
- ECachePriority::Blocking has been added for requests that the caller will block on.
#rb Zousar.Shaker
#rnx
[CL 15471951 by Devin Doucette in ue5-main branch]
ICache will eventually replace the existing cache access functions on FDerivedDataCacheInterface. The notable differences relative to the existing interface are:
- It is asynchronous with completion callbacks by default, and allows waiting when necessary.
- It allows batch requests containing multiple cache records by default.
- It uses a structured cache key made up of a bucket name and a hash.
- It supports prioritization and cancellation of requests.
- It supports structured cache records with metadata.
- It supports attachments to allow multi-part cache records.
- It uses a typed request object instead of an opaque integer handle.
- It provides cache policy flags to control how to query and store cache records, and which parts of a cache record to fetch.
This initial implementation of ICache is totally synchronous and uses the existing cache backends for storage.
#rb Zousar.Shaker
[CL 15152247 by Devin Doucette in ue5-main branch]
The async put backend now uses this new status to avoid calling CachedDataProbablyExists after every put, which has a high cost for certain backends.
#rb Zousar.Shaker
#fyi Joakim.Lindqvist, Stefan.Boberg
[CL 15000972 by Devin Doucette in ue5-main branch]
E.g.
'-ddc-local-missrate=50' simulates a 50% miss rate of keys on the local backend,
'-ddc-shared-misstypes=AnimSeq' simulates misses for any AnimSeq key. Use + to combine keys. E.g. AnimSeq+Audio
Memory DDC, FileSystemDDC and S3DDC support these options as do the classes that wrap other backends (e.g. AsyncPut).
#tests lots of warm and cold DDC
[at]ben.marsh [at]josh.engebretson [at]devin.doucette
#ROBOMERGE-SOURCE: CL 12458693 via CL 12462167 via CL 12464485 via CL 12464606
#ROBOMERGE-BOT: RELEASE (Release-Engine-Staging -> Main) (v672-12450963)
[CL 12464717 by andrew grant in Main branch]
