Software Architecture in Golang: Orchestrator Pattern

What is the Orchestrator Pattern? Adam Bellemare defines it in his book “Building Event Driven Microservices” as a “pattern where a central Microservice, issues commands to and awaits responses from subordinate worker Microservices”.

■ Pros of using the Orchestrator Pattern:
■■ It’s relatively easy to implement and maintain because all coordination is in one place.
■■ Workflow is easier to define because of the nature of the centralized orchestration.

■ Cons of using the Orchestrator Pattern:
■■ There’s coupling between the orchestrator and services, any upstream changes require changes in the orchestrator.
■■ Single point of failure, because the orchestrator is in charge of the workflow, if it fails everything fails even the if the other services are working correctly.

== Relevant links

■ Building Event-Driven Microservices (affiliate link): https://amzn.to/3zuMWer
■ Example code: https://github.com/MarioCarrion/videos/tree/a58147a8d623719879191925482400aee958f87a/2022/06/10
■ Software Architecture in Go/Golang: https://www.youtube.com/playlist?list=PL7yAAGMOat_GCd12Lrv_evJ3Zhv1dl8B-
■ Learning Golang: Concurrency Patterns using errgroup package: https://youtu.be/KGOgEr7tFKE
■ Learning Golang: Context package: Cancellations, Deadlines and Request-scoped values https://youtu.be/mgJMIZsWfB4

== All Go/Golang Playlists

■ Building Microservices in Go/Golang: https://www.youtube.com/playlist?list=PL7yAAGMOat_Fn8sAXIk0WyBfK_sT1pohu
■ Go/Golang Tools and Packages: https://www.youtube.com/playlist?list=PL7yAAGMOat_HEEOvH99agDs_5g51A0Ls3
■ Learning Concurrency Patterns in Go/Golang: https://www.youtube.com/playlist?list=PL7yAAGMOat_Fhj_px_DzNzTsXs-mRwv1t
■ Learning Go/Golang : https://www.youtube.com/playlist?list=PL7yAAGMOat_F7bOImcjx4ZnCtfyNEqzCy
■ Learning Relational Databases in Go/Golang: https://www.youtube.com/playlist?list=PL7yAAGMOat_EgwoQTvNUflrYL_4qzdB7f
■ Software Architecture in Go/Golang: https://www.youtube.com/playlist?list=PL7yAAGMOat_GCd12Lrv_evJ3Zhv1dl8B-
■ Testing in Go/Golang: https://www.youtube.com/playlist?list=PL7yAAGMOat_HSeW4zF0uRL9EaHadE4ZZq

== Socials

■ https://twitter.com/MarioCarrion
■ https://www.instagram.com/mario.carrion
■ https://linkedin.com/in/MarioCarrion

00:00 – Introduction to the Orchestrator Pattern for Microservices
01:19 – Example of implementing the Orchestrator Pattern in Golang
12:58 – Conclusion of the Orchestrator Pattern using Golang

=== Who am I?

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