Blogs on Duc Truong

Database: Why did NoSQL emerge when SQL already existed?

Sat, 10 Aug 2024 19:36:17 +0700

Recently, I had the opportunity to participate in the development and construction of a large-scale product, designed to serve hundreds of thousands, even millions, of users daily. As a result, the core architecture was built on the CQRS Pattern, a model that separates data reading and writing operations. This approach has allowed us to optimize the system’s performance and scalability while minimizing risks when handling large volumes of data. Through these experiences, I’ve been able to answer a question that has puzzled me for a long time: ‘Why did NoSQL emerge when SQL already existed?’ In this article, I’ll share with you the origins and development reasons behind SQL and NoSQL, as well as the challenges each of these database systems faces. Let’s dive in!

Designing a High-Load File Upload System with the Tus Protocol

Wed, 15 May 2024 16:30:10 +0700

Hello everyone, uploading data to the internet happens every day, from uploading photos to Facebook, videos to YouTube, TikTok, or files to Google Drive, etc. Files can range from small to very large sizes, but network environments have never been stable 😅, with jitter, lag, or sudden disconnections 🤯. Have you ever wondered how to deploy a system capable of resuming an upload even if the connection is lost midway?

Implement polling technique with Golang

Sat, 27 Apr 2024 20:21:23 +0700

Hello everyone, in the previous post, I introduced the Polling technique. In this post, I will leverage the power of Golang to implement the Polling technique (Short Polling and Long Polling).

This is a blog post in my System Design series, if you are interested in issues related to system design. software system, follow this series to update the latest knowledge!

Short polling

In this approach, the downstream will send a request to the upstream after a certain period of time. This is the simplest approach.

What is polling technique? Short polling vs long polling

Tue, 23 Apr 2024 23:25:18 +0700

In an era of relentless technological advancement, increasingly sophisticated software systems are emerging, accompanied by ever-growing and complex data. To handle large and complex data, modern software systems are often designed using the Microservices model. The Microservices model helps break down the system into smaller services, each of which can have even smaller components.

One of the biggest challenges when building a Microservices system is how to make the services communicate with each other effectively. In this article, we will explore a communication technique between services or components in the Microservices model, known as Polling.

Markdown: Basic guide for beginners

Sat, 20 Apr 2024 18:35:00 +0700

Hello everyone, this is the first article in my series about Markdown, a simple and easy-to-use markup language. In this article, we will learn about the basic syntax of Markdown and how to use it in real applications.

Introduction

Markdown is a lightweight markup language designed to create text that is easy to read and write, created by John Gruber in 2004. Today, markdown is one of the most popular markup languages. most variable in the world.