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Redis Pub/Sub Example

Usage instructions

Start Redis with Docker

docker run -p "6379:6379" redis:7.0.2

Start two server instances running on different ports

PORT=4000 yarn workspace example-redis-pub-sub start
PORT=4001 yarn workspace example-redis-pub-sub start

Visit and set up the subscription by pressing the Play button.

http://127.0.0.1:4000/graphql?query=subscription+%7B%0A++message%0A%7D

Visit and execute the mutation by pressing the Play button.

http://127.0.0.1:4001/graphql?query=mutation+%7B%0A++sendMessage%28message%3A+%22Yo+we+share+a+redis+instance.%22%29%0A%7D

See your subscription update appear on 127.0.0.1:4000, even though you executed the mutation on a different Node.js server instance running on 127.0.0.1:4001.

The magic of Redis. 🪄✨