MathMessage {
  base: int64,
  factorial: int64,
  doubled: int64,
  tripled: int64
}

The object starts with just a base number, then is sent to Redis as a shallow object with nil/undefined values for the related data.

The requester that initially inserted the object sends a Redis PUBLISH request of the Redis LIST key.

Each service is listening on the calcs-needed CHANNEL and makes a copy of the left-most object in the immutable object list on Redis (LRANGE/LPUSH).

As a service computes the value/performs the work, it prepends the new (more filled out) object onto the left side.

When all services are done, the reassembler takes the N shallow copies to build one fully hydrated copy. This is then served to the requester.

Build with cat build.sh | sh in the project root.

Then you can use a simple make start to see it in action.

Initiate a request with curl http://localhost:5001/6

GPLv3