e2core: Redis section in `Directive.yaml` in is not read/used

Only the default in-memory cache is used, even if the redis connection is declared:

identifier: com.suborbital.services
appVersion: v0.1.0
atmoVersion: v0.4.4

connections:
  redis:
    serverAddress: redis-server:6379

handlers:
  - type: request
    resource: /create
    method: POST
    steps:
      - fn: create
  - type: request
    resource: /read/:key
    method: GET
    steps:
       - fn: read

The create function adds a key/value to the cache, and the read function reads the value associated with the key. But when I run this:

redis-cli
keys *

I get nothing. The cache methods are ok, but nothing is stored in the Redis database