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Pattern: Domain-specific protocol

Context

You have applied the Microservice architecture pattern. Services must handle requests from the application’s clients. Furthermore, services must sometimes collaborate to handle those requests. They must use an inter-process communication protocol.

Forces

Solution

Use a domain-specific protocol for inter-service communication.

Examples

There are numerous domain-specific protocols including:

  • Email protocols such as SMTP and IMAP
  • Media streaming protocols such as RTMP, HLS, and HDS

Resulting context

  • The Messaging pattern is an alternative pattern
  • The RPI pattern is an alternative pattern

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