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I was faced with this mysterious phenomenon where an app I deployed on Coolify automatically ends up exiting at a certain time every day. At first I thought, "Is it stopped because I haven't set up a Health check?" and looked around the settings, but I couldn't find any particular cause...

"I tried creating a bulletin board app that can use HTML tags!" What if a work by a beginner engineer would be "taken over" with just one line post? This time, we will be using an example of "Cross-site Scripting (XSS)," which is the basics of security, to see how vulnerable they are...

From 2024 to 2025, the development of AI-powered apps and services has become increasingly popular. Large-scale language model (LLM) **, represented by ChatGPT and Claude, goes beyond just chatbots to create a variety of different languages, including code generation, summarization, search, and document processing.

"The time has come for AI to create websites" -- such words are no longer special. Among them, I found Readdy, an AI service that automatically creates cool web pages by simply entering the prompt (natural language).

"The era where we can create apps with AI" has become commonplace now. Among them, I found **YouWare**, a service that allows you to automatically generate web apps and sites by simply entering a prompt (natural language). Introducing YouWare...

I was thinking of creating an AR app with WebXR, but the current situation is that iOS does not officially support WebXR. So, I used Variant Launch, which was also featured in the official React Three XR, to support WebXR AR on iOS as well. Does it work on iOS?WebXR fo...

In this article, we will summarize the steps to install Coolify on a VPS, integrate with GitHub, auto-deploy, and build your own domain + HTTPS using Cloudflare. The target audience is as follows: How to manage multiple apps on a Docker basis GUI...

Vercel is widely used as a hosting platform for Next.js apps. While it's easy to get started with the free plan (Hobby), the paid plan (Pro) has features that are essential for large-scale development. In this article, we will introduce the [2025 edition] to the full version of Vercel's free plans vs paid plans...

Recently, web application development has seen an increasing number of efforts to improve the user experience using graphics. With React Three Fiber (R3F), you can easily utilize Three.js features as a React component, making it easy for anyone to create attractive expressions...

One thing that cannot be avoided in 3D app development is the operations of objects such as "Position", "Rotation", and "Scale". React Three Fiber (R3F) allows you to intuitively build 3D scenes while taking advantage of React's component-based mechanisms...