What could better cross-(micro)service messaging look like?
For anyone who knows me at all, this is something I’ve tinkered with at great length in my pet project around message queuing / pubsub / HTTP proxying, singyeong. Lately, I’ve been thinking about the interface to it, and wondering if I’ve been approaching this from the wrong direction.
As a quick recap, singyeong is a message queue + pubsub + HTTP proxy that allows routing payloads via client metadata. To show what this means in an example, suppose you were running some large multiplayer game server. You’re most likely splitting up players across a bunch of servers, and you need to be able to send a message to the server holding a specific player, for any number of reasons. You might do this with:
- pubsub + discarding if the player isn’t on that server, but then you have to pay the price of a fanout to every game server instance, which could add up at scale.
- consistent hashing, which...
Continue reading →