I wanted to experiment with multiple things
- golang, language that I recently discovered and really appreciate
- GRPC nice replacement for JSON if you ask me, perfect for inter-service communication
- microservices architecture because I never worked with them
Create a platform where users can create shows (some kind of room) and post comments in it.
I will not bother with registration and authentication.
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For now, I didn't make a service in charge of the shows, the gateway is doing all of the work.
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Comments do no check if a show exists.
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Everything is currenly in local state. This needs to be moved into some database in order to be able to scale the servers horizontally.
Used for pubsub. It is shared by all services but can be instancied for each service independently.
Microservice handling show comments. Very simple, only exposed through GRPC.
Service exposing a GraphQL HTTP+WS endpoint and a GraphiQL playground. Communicates with other services (Comments in this case) using GRPC.
I chose to do inter-service communication using GRPC.
Service internal communication are done using redis pubsub.
Another solution would be to use pubsub for inter-service communication. In this scenario, the gateway would not use streaming GRPC but would subscribe to pubsub instead.