PostgreSQL - Isolation Levels
The transaction isolation level is one of the vital aspects to understand how transactions influence each other when run concurrently. Isolation level establishes a ba...
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Fundamentals of System Design - Failure Models
Distributed systems consist of a set of loosely coupled services that end users perceive as a single coherent system. However, due to the loose coupling between compon...
Fundamentals of System Design - Concurrency and Parallelism
Concurrency and Paralleism - these terms sound similar; however, from a software engineer’s perspective, they denote two different concepts. Concurrency is the abilit...
System Design - Notification System
In this wiki, we will explore an approach to designing a notification service. Requirements What type of notifications do we need to send? => Push, SMS, email ...
System Design - Web Crawler
In this wiki, we will explore an approach to designing a Web-crawling service. Requirements What is the purpose of the crawler here? Search engine indexing, data m...
System Design - Design a URL Shortener
In this wiki, we will explore an approach to design a URL shortener service. Requirements: Shortened URLs’ length should be as short as possible Shortened URL sh...
System Design - Design a Unique ID Generator for Distributed Systems
In this wiki, we will explore how various services generate unique IDs. Requirements: Characteristics of the unique ID required IDs must be unique and s...
System Design - Design Key-Value Store
A key-value store, also referred to as a key-value database, is a crucial topic to discuss in system design. Designing a large-scale key-value store addresses a vast m...
Introduction to Consistent Hashing
Hashing is one of the most crucial concepts, and has found usage in multiple unconventional places. The distributed systems use hashing to distribute the requests effi...
System Design - Rate Limiter
Rate limiter is a vital component in large-scale web applications, as it controls traffic to the application servers to ensure a smooth experience for the majority of ...
