# Slack Rebuilt Notifications for Millions of Users

DevFeed: [Slack Rebuilt Notifications for Millions of Users](<https://devfeed.tech/articles/slack-rebuilt-notifications-for-millions-of-users-17942.md>)

Original publisher: [Read original article](<https://read.bytesizeddesign.com/p/slack-rebuilt-notifications-for-millions>)

Author: Byte-Sized Design

Published: 2026-03-30T01:14:20Z

Content type: article

Language: en

Sources: [Byte-Sized Design](<https://devfeed.tech/sources/byte-sized-design.md>)

Topics: [Slack](<https://devfeed.tech/topics/slack.md>)

Tags: [architecture](<https://devfeed.tech/tags/architecture.md>), [notifications](<https://devfeed.tech/tags/notifications.md>), [slack](<https://devfeed.tech/tags/slack.md>)

## AI overview

The article examines how Slack rebuilt its notification system and describes an architecture decision that enabled the change without breaking existing users.

## Source excerpt

Slack rebuilt its notification system from scratch, here's the architecture decision that made it possible without breaking millions of users.