S3Publisher should set Cache Control Headers about cwa-server HOT 2 CLOSED

For the sake of simplicity, I think we can get away with just setting everything to 5 minutes. In the worst case, we need to expect requests for all available files by all 4 CDN master cache servers every 5 minutes. We serve a peak total of 356‬ files (1 version index, 1 version OpenAPI JSON, 2 country indices for diagnosis keys and parameters, 1 date index, 14 date aggregates, 14 hour indices, 14*24 hour aggregates, 1 parameter configuration). If we set everything to 5 minutes, this would lead to an average of:

• 1424‬ requests per 5 minutes
• ~285 requests per minute
• ~5 requests per second

I think the object storage should easily be able to handle that, even if for some reason the CDN edge cache servers decided to request stuff themselves.

from cwa-server.

5 Minutes is OK for now - let's keep it simple in the first iteration.

from cwa-server.