System Design

If you’re displaying images stored in an AWS S3 private bucket using signed URLs, you might have encountered a confusing scenario: images display perfectly in your web pages but throw CORS errors when you try to download them using JavaScript’s fetch API. Let’s break down the issue and explore a practical solution. Understanding the Problem … Read more

Introduction If you’re involved in building software today, chances are you’re dealing with data. Lots of it. Maybe it’s user activity, sensor readings, financial transactions, or something else entirely. Martin Kleppmann’s phenomenal book, “Designing Data-Intensive Applications” (often called DDIA), is practically required reading for navigating this landscape. Let’s dive into some key takeaways from this essential … Read more

What is Signaling in WebRTC, and Why is it Needed? WebRTC allows direct peer-to-peer (P2P) communication, but before two peers can connect, they need to exchange network and media information. This process is called signaling. Signaling is needed for: WebRTC does not define a signaling protocol. Developers must implement their own using available technologies like … Read more

WebRTC (Web Real-Time Communication) is an open-source project that enables real-time communication between browsers and devices using peer-to-peer connections. It allows audio, video, and data sharing without requiring additional plugins or external software. How Does WebRTC Work? WebRTC works by establishing a direct connection between two peers (browsers or applications) to transmit media (audio/video) and … Read more

Introduction In the world of software development, the ability to build and deploy applications across different architectures is invaluable. This capability becomes particularly essential when dealing with ARM-based applications such as those for embedded systems or newer ARM-based servers. In this blog post, we will explore how to build ARM64 Docker container images on an … Read more

Introduction In today’s data-driven landscape, businesses require robust tools to efficiently process, transform, and analyze data for deriving meaningful insights. Google Dataflow is a solution, offering a powerful, fully managed service on the Google Cloud Platform (GCP) that simplifies the complexities of building data pipelines. Key Features of Google Dataflow Google Dataflow boasts several key … Read more

Introduction Cloud Firestore is a powerful, cloud-based NoSQL database that offers a flexible and scalable solution for storing and managing data. This post dives into the core concepts of Firestore, contrasting it with traditional relational databases and highlighting its unique advantages. NoSQL vs. Relational Databases: A Paradigm Shift If you’re familiar with relational databases like … Read more

Introduction In today’s interconnected digital landscape, APIs (Application Programming Interfaces) serve as the backbone of modern software development, enabling seamless communication between disparate systems. However, managing and securing APIs can be complex, especially in microservices architectures where numerous services interact with each other. What is an API Gateway? An API gateway is an architectural pattern … Read more

Introduction In today’s interconnected world of software development, designing robust and scalable APIs is crucial for building successful applications. Representational State Transfer (REST) has emerged as a dominant architectural style for designing networked applications. In this blog post, we’ll delve into the principles and best practices of designing APIs using REST specifications. Understanding REST At … Read more