Removes bindings to user provided services for new application
deployments and sets the expected environment variables to `null`.
Listing variables in the manifest allows us to only inject secrets
used by the app. `null` is not a valid value for a variable in a
CloudFoundry manifest, so if any of the keys don't have a match in
the credentials file `cf push` will return an error and stop the
deployment.
- Reverted the Gunicorn worker number to 5 (this should be investigated
further on a well baselined system to compare)
- Enabled REDIS
- Increased the rate limit to 400 req/sec as using early testing
yesterday 450+ was being achieved
Increasing the Gunicorn workers to 10 actually made the API decrease
in performance from ~200 requests/sec with with 20 API instances to
150 requests per/sec. The base value is 5 so this is to test how the API
performs with a slight increase.
Increased Gunicorn threads to 10 on staging to test if there is a
performance increase when testing request per second. Increased to 10.
Gunicorn recommend 2 x cores + 1 however on PaaS the number of cores
is not consistent.
