---
title: "How WhatsApp scaled to 1 billion users with only 50 engineers"
url: https://daily.dev/posts/how-whatsapp-scaled-to-1-billion-users-with-only-50-engineers-s3ctbwzk-k
source_url: https://www.quastor.org/p/how-whatsapp-scaled-to-1-billion
type: article
source: "Quastor Daily"
published: 2021-10-18T13:39:31.776Z
updated: 2021-10-18T13:39:31.777Z
tags: ["erlang"]
reading_time: 7
upvotes: 180
comments: 9
language: en
---

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# How WhatsApp scaled to 1 billion users with only 50 engineers

**[Quastor Daily](https://daily.dev/sources/quastor)** · 7 min read · 180 upvotes · 9 comments

## Summary

How WhatsApp served 1 billion users with only 50 engineers. How to quickly learn new programming languages and frameworks. An in-depth dive to Hadoop Distributed File System (HDFS) Concurrency in Java vs. Go. An amazing free textbook on math for programmers (covers Calculus, Linear Algebra and Discrete Math)

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://www.quastor.org/p/how-whatsapp-scaled-to-1-billion>

## Community discussion

Top comments from developers on daily.dev.

**@idoshamun** · 2 upvotes

> I would recommend this article to anyone who's in tech. But especially engineers. We tend to over-engineer systems and I love their mantra...
> Also, Erlang sounds super cool!

**@musaab** · 2 upvotes

> It would be nice if they respected privacy a bit more like Signal, or better yet, Session.

**@itsmnthn** · 2 upvotes

> Awesome Newsletter

**@wilsoncv778** · 1 upvotes

> Great little articles that you dont need to spend to much time reading.

**@avinashdalvi\_** · 0 upvotes

> Nice information 👍🏻👍🏻

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---

Tags: [#erlang](https://daily.dev/tags/erlang)

[View this post on daily.dev](https://daily.dev/posts/how-whatsapp-scaled-to-1-billion-users-with-only-50-engineers-s3ctbwzk-k)