---
title: "The Fantastic Four of System Design"
description: "Explore the core principles of system design: scalability, availability..."
image: 'https://assets.bytebytego.com/diagrams/0357-who-are-the-fantastic-four-of-system-design.png'
createdAt: '2024-02-05'
draft: false
categories:
  - cloud-distributed-systems
tags:
  - "system design"
  - "scalability"
---

![](https://assets.bytebytego.com/diagrams/0357-who-are-the-fantastic-four-of-system-design.png)

Scalability, Availability, Reliability, and Performance. They are the most critical components to crafting successful software systems.

Let’s look at each of them with implementation techniques:

*   **Scalability**

    Scalability ensures that your application can handle more load without compromising performance.

*   **Availability**

    Availability makes sure that your application is always ready to serve the users and downtime is minimal.

*   **Reliability**

    Reliability is about building software that consistently delivers correct results.

*   **Performance**

    Performance is the ability of a system to carry out its tasks at an expected rate under peak load using available resources.