---
title: "Real-time Messaging"
url: https://daily.dev/posts/real-time-messaging-ntkjc8bw4
source_url: https://slack.engineering/real-time-messaging/
type: article
source: "Slack engineering"
published: 2023-04-11T20:43:58.134Z
updated: 2023-04-11T20:43:57.984Z
tags: ["css", "architecture", "slack", "websocket"]
reading_time: 6
upvotes: 22
comments: 0
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Real-time Messaging

**[Slack engineering](https://daily.dev/sources/slack)** · 6 min read · 22 upvotes · 0 comments

## Summary

Slack Engineering describes the architecture that we use to send real-time messages at this scale. Slack sends millions of messages every day across millions of channels in real time all around the world. We have a draining mechanism for region failures that seamlessly switches the users in a bad region to the nearest good region.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://slack.engineering/real-time-messaging/>

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---

Tags: [#css](https://daily.dev/tags/css), [#architecture](https://daily.dev/tags/architecture), [#slack](https://daily.dev/tags/slack), [#websocket](https://daily.dev/tags/websocket)

[View this post on daily.dev](https://daily.dev/posts/real-time-messaging-ntkjc8bw4)