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Microservice Communication

Ideal Technology

  • Make Backward Compatibility Easy.
  • Allow Different Client Technology Stack.

Technology Choices

RPC

Network

Performance, Failure, Security.

Brittleness

Objects used as part of binary serialization across the wire can be thought of as expand-only types.

Notice

Don’t abstract your remote calls to the point that the network is completely hidden.

Ensure that you can evolve the server interface without breaking any client.

REST

Level 1

Rather than making all requests to a singular service endpoint, we now start talking to individual resources.

Level 2
  • HTTP Verbs: safe (GET) and not-safe operations.
  • Status Codes: help communicate the kinds of errors you run into.
Level 3

Hypermedia Controls: tell us what we can do next and the URI to do it.

GraphQL

Message Brokers