Consuming data from Sumo - caching and transfer speeds

[sigurdp]

Some discussion points and topics that should be clarified regarding how Webviz can and should consume data from Sumo.

Reasons for wanting to cache data retrieved from SUMO could be:

• Storing/caching computed/derived results
• Need for transforming data to a more front-end friendly format
• Better raw access speed, storing the data closer to the consuming service

What should be the rules/guidelines for caching in clients wrt. SUMO data?

• Is caching allowed?
• Where (backend, user's browser)?
• For how long can data be cached?
• Is it permissible/technically possible to cache data on a higher level than per user:
  • Access groups etc?
  • Based on roles?
• Are permissions configured on a per blob-granularity or can we make assumptions based on the granted access to metadata?

Expectations wrt data transfer speed between SUMO and backend services/clients:

• What is the expected raw data transfer speed between SUMO and clients (e.g. Webviz)?
• Experiments so far indicate mediocre transfer speeds, but this may not be correct