shared cache meeting 20200701

Present at the meeting:

• Andrey Mokhov (@snowleopard)
• Jérémie Dimino (@jeremiedimino)
• Quentin Hocquet (@mefyl)

Work

Quentin

• Added configuration file support to shard artifacts to multiple backend.

Andrei

• Working on talking to the cache daemon in Jenga.

Discussion

Not distributing fast rules

We might want to not distribute rules that are quick to run, as rebuilding would beat downloading from the shared cache. That would probably require to add a "runtime" field in the metadata files. We still want to cache them locally because of deduplication.

Jenga integration

Required step to support Jenga integration on the daemon side, prioritized :

• Support Unix socket.
• New "promoted" message, to inform the daemon that a rule was promoted directly by Jenga and some action must be taken - eg. upload to the distributed cache.
• Support Jenga's value directory.
• Trimming.
• Parse config file on the distributed server side, to reject and trim files we are not supposed to store.
• Work on Etags to not upload or download duplicate files.