devin doucette 8a913e045a DDC: Fixed cache record propagation to respect the cache policy ...

The hierarchical backend now considers the Store and Query flags, whether backends are writable, and whether backends allow lower cache levels to be filled.

Features of cache propagation that are missing at this point:
- Propagation within GetChunks.
- Consideration of the local/remote classification of the backend relative to the cache policy.
- Removal from the response of data that was requested for propagation purposes but was meant to be skipped.
- Use of the PartialOnError flag and custom policies to allow higher level backends to return parts of records while attempting to recover only the missing pieces from lower level caches.
- Disabling propagation of Get and Put after reaching backend that contains the record or value, and disables filling of lower cache levels.

#rb Zousar.Shaker
#rnx
#preflight 61e2709d4b4bd12cbef7cc11

#ROBOMERGE-AUTHOR: devin.doucette
#ROBOMERGE-SOURCE: CL 18632967 in //UE5/Release-5.0/... via CL 18633044 via CL 18633055
#ROBOMERGE-BOT: UE5 (Release-Engine-Test -> Main) (v899-18417669)

[CL 18637363 by devin doucette in ue5-main branch]

2022-01-18 04:29:38 -05:00

..

Private

DDC: Fixed cache record propagation to respect the cache policy

2022-01-18 04:29:38 -05:00

Public

DDC: Added functions to transform a cache policy and build policy

2022-01-14 09:48:40 -05:00

DerivedDataCache.Build.cs

DDC: Moved cache backends out of headers

2022-01-11 11:57:38 -05:00