AlgoDaily - WhatsApp Systems Design

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WhatsApp Systems Design

It's more than just a messaging app; it's a technological marvel that connects people across the globe. How does it all work? What's the secret behind its smooth performance, real-time messaging, voice and video calling, and more? Let's embark on an exploratory journey into the world of WhatsApp, uncovering its technologies, architectures, and patterns.

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1. LESSON

Examining the WhatsApp Architecture

Welcome to this comprehensive tutorial where we will unravel the high-level engineering intricacies of WhatsApp. We'll not only dissect the WhatsApp system architecture but also delve into the broader landscape of real-time messaging apps. By the end of this tutorial, you'l...

14 minutes Mark Completed

2. LESSON

How WhatsApp Handles One-to-One Chats

In this tutorial, we are going to explore how WhatsApp efficiently handles one-to-one chats, group messaging, and telephonic services. One-to-One Chat WhatsApp utilizes a lightweight protocol called Gateway to enable fast and efficient one-to-one chatting between users. When a user opens WhatsApp, thei...

14 minutes Mark Completed

3. LESSON

FreeBSD Operating System

Optimizing WhatsApp with FreeBSD: A Deep Dive Welcome to this enlightening tutorial where we'll explore how the FreeBSD Operating System supercharges WhatsApp. In addition to understanding FreeBSD's architecture, we'll delve into its impact on optimizing the popular social media platform, WhatsApp. What Makes FreeBSD the Choice for WhatsAp...

13 minutes Mark Completed

4. LESSON

Mnesia (WhatsApp)

Understanding Mnesia's Role in WhatsApp's Robust Architecture Today, we'll delve into the captivating world of Mnesia, a specialized database management system (DBMS), and explore its symbiotic relationship with Erlang in the architecture of WhatsApp. The Colossal Scale of WhatsApp First, let...

15 minutes Mark Completed

5. LESSON

Erlang/OTP (WhatsApp)

In this deep dive, we're going to unpack the reasons behind WhatsApp's intriguing choice: Why did they decide to use Erlang, a language originally designed for telecom systems, for one of the world's most popular messaging apps? The Power of Erlang/OTP When you think about messaging apps, telecom syste...

20 minutes Mark Completed

6. LESSON

Yaws (WhatsApp)

In this tutorial, we are going to explore the high-level engineering and system architecture behind Yaws (Yet Another Web Server). We will also look at how it is utilized in the WhatsApp architecture. Yaws Yaws (Yet Another Web Server) is an open-source Erlang Web Server that is very popular due to i...

7 minutes Mark Completed

7. LESSON

Last Seen / Online (WhatsApp)

How WhatsApp Handles "Last Seen" and "Online" Status WhatsApp uses a Last Seen microservice to manage user online status. This service stores timestamp data indicating when each user was last active. Overview The Last Seen microservice is responsible for tracking the following: When a user opens WhatsApp When a user sends or rec...

8 minutes Mark Completed