# An Interactive Study of Publish/Subscribe Messaging for Event-Driven Backend Systems

DevFeed: [An Interactive Study of Publish/Subscribe Messaging for Event-Driven Backend Systems](<https://devfeed.tech/articles/what-is-pub-sub-17831.md>)

Original publisher: [Read original article](<https://encore.dev/blog/pubsub>)

Author: Ivan Cernja

Published: 2026-04-24T00:00:00Z

Content type: tutorial

Language: en

Sources: [Encore Updates](<https://devfeed.tech/sources/encore-updates.md>)

Topics: [Publish-subscribe pattern](<https://devfeed.tech/topics/pubsub.md>), [Messaging](<https://devfeed.tech/topics/messaging.md>), [Back end](<https://devfeed.tech/topics/backend.md>), [distributed-systems](<https://devfeed.tech/topics/distributed-systems.md>), [event driven](<https://devfeed.tech/topics/event-driven.md>)

Tags: [decoupling](<https://devfeed.tech/tags/decoupling.md>), [developers](<https://devfeed.tech/tags/developers.md>), [distributed-systems](<https://devfeed.tech/tags/distributed-systems.md>), [event-driven](<https://devfeed.tech/tags/event-driven.md>), [events](<https://devfeed.tech/tags/events.md>), [flow](<https://devfeed.tech/tags/flow.md>), [messaging](<https://devfeed.tech/tags/messaging.md>), [patterns](<https://devfeed.tech/tags/patterns.md>), [publisher](<https://devfeed.tech/tags/publisher.md>), [subscriber](<https://devfeed.tech/tags/subscriber.md>)

## AI overview

An interactive tutorial explains publish/subscribe messaging by contrasting it with direct service calls. It shows how topics decouple publishers from subscribers, support fan-out, and let subscribers process messages independently, including when downstream services are unavailable.

## Source excerpt

An interactive study of publish/subscribe messaging