GAZAR

Starting a new article on the outbox pattern — a simple idea that saved one of my teams from a lot of late-night firefighting.

I get asked about system design interviews a lot — partly because I’ve both interviewed at and conducted interviews for big teams, and partly because I run workshops through PersiaJS and on my newsletter, Monday by Gazar. Over the last decade I’ve learned that doing well in these interviews isn’t about memorizing buzzwords; it’s about a repeatable, clear thought process and being able to justify trade-offs under time pressure.

Last week, I stumbled upon a visual “System Design Topic Map” from ByteByteGo that instantly caught my attention. As someone who’s built products, led teams, and spent too many late nights debugging scaling issues, this map felt like a cheat sheet for everything I wish I’d had years ago.

Trello is known for its intuitive user interface (UI) and flexible task management system. In this article, we'll explore the key principles and strategies for designing a user-friendly UI for Trello-like productivity apps.

Designing an expense app with varying approval flows based on user levels requires a thoughtful approach to user experience and system architecture. Here's a step-by-step guide on how to design such an app:

Understanding OAuth2 can be daunting, especially when diving into its intricate mechanisms and protocols. However, breaking down its functionalities, such as through sequence diagrams, can illuminate its inner workings. In this article, we will unravel OAuth2 and explore how sequence diagrams serve as invaluable tools in comprehending its processes.

Netflix is a leading streaming platform that provides on-demand access to a vast library of movies, TV shows, and original content. Behind its user-friendly interface lies a sophisticated system architecture designed to deliver high-quality streaming experiences to millions of users worldwide. In this article, we'll delve into the system design considerations for Netflix, covering both non-technical and technical requirements, as well as low-level and high-level designs.

Dropbox is a cloud-based file storage and collaboration platform that allows users to store, share, and synchronize files across multiple devices. Behind the scenes, Dropbox's system architecture is designed to handle massive amounts of data, ensure data security and privacy, and provide a seamless user experience. In this article, we'll explore the system design considerations for Dropbox, covering both non-technical and technical requirements, as well as low-level and high-level designs.

Instagram, a popular social media platform, enables users to share photos, videos, and stories with their followers and engage with content from others. Behind the scenes, Instagram's robust system architecture handles a massive volume of media uploads, user interactions, and content delivery. In this article, we'll delve into the system design considerations for Instagram, covering both non-technical and technical requirements, as well as low-level and high-level designs.

Twitter, a popular social media platform, enables users to share short messages, known as tweets, with their followers in real-time. Behind the scenes, Twitter's robust system architecture handles a massive volume of tweets, user interactions, and content delivery. In this article, we'll delve into the system design considerations for Twitter, covering both non-technical and technical requirements, as well as low-level and high-level designs.

Uber, the renowned transportation network company, operates at a massive scale, connecting millions of riders with drivers across the globe. Behind the scenes, Uber's intricate system architecture powers its platform, handling millions of requests, coordinating logistics, and ensuring a seamless experience for users. In this article, we'll explore the system design considerations for Uber, covering both non-technical and technical requirements, as well as low-level and high-level designs.

In urban infrastructure, chambers serve as crucial connection points, facilitating various utilities. With the increasing demand for high-speed internet services, efficiently managing chambers becomes imperative. In this article, we'll delve into designing a web application using the Command Query Responsibility Segregation (CQRS) pattern to streamline chamber management.

Designing a delivery app that seamlessly connects users with their desired products requires careful consideration of functional requirements, technical needs, and high-level design principles. In this article, we'll explore the intricacies of system design for a delivery app, shedding light on the key components and considerations that drive its architecture.

Designing a messaging app that offers a seamless user experience requires careful consideration of functional requirements, technical needs, and high-level design principles. In this article, we embark on a journey to explore the intricacies of system design for a messaging app, uncovering the key components and considerations that drive its architecture.

In this discourse, we embark on a structured exploration of autocomplete, unravelling its underlying mechanisms and technical intricacies that propel it to the forefront of modern search functionality.

In this article, I will explore the essential elements of building an e-commerce platform, from business requirements to detailed architecture, along with common questions and a concluding summary.

In this article, we'll explore the intricacies of designing a robust and user-friendly online file-sharing system that meets the demands of today's users and businesses.

In the vast landscape of the internet, long URLs can often resemble tangled webs, making sharing cumbersome and inefficient. Enter the humble URL shortener service, a nifty tool that transforms lengthy links into compact, shareable snippets. Inspired by the likes of TinyURL, let's embark on a journey to design a scalable URL shortener service that can stand the test of time.

Ever circled a parking lot like a lost explorer searching for buried treasure? Fear not, for the age of tech has dawned upon the parking scene, promising smoother rides and fewer headaches. Let's take a dive into the geeky gears and gadgets powering the design of modern parking lot systems.

Designing a social media app involves considering various aspects such as user experience, scalability, security, and features. Here's a high-level system design for a social media app: