1 The cause of the third optimization of the blog's active-active architecture: A few days ago, I was preparing to perform a very routine maintenance operation on the Mac mini node in the blog's active-active architecture: upgrading the version of Portainer. As a result, a seemingly insignificant small problem ended up putting the entire node...

1 Preface: I have been using an entry-level VPS ($39/year) from Racknerd's Chicago data center to build the “read-only node” in my blog's active-active architecture for almost half a year now. Over this half-year, the overall stability of the VPS has actually been quite good, at least...

1 Preface: In my previous articles, I had two posts about self-hosting Umami: one about setting up version 1.33.1 (see article: Docker Series: Building a Umami-based Website Traffic Monitoring System), and one about setting up version 2.11.3 (see article: Home Data Center...

1 Preface From my previous articles on RAG and knowledge bases, a word often appears—vector. It can be said that vector is one of the core concepts of AI. Anyone who has had contact with AI is probably no stranger to this word. In fact, even if it is not because of AI, everyone's understanding of vec...

1 The Crisis and Value of Personal Blogs Today. Once upon a time, the creative form of personal blogs (hereinafter referred to as blogs) was a beautiful landscape on the Internet. It was an era when everyone was willing to write something and share some insights: programmers recorded study notes, travelers wrote down stories along the way, food lovers...

1 WordPress Caching Dilemma and Solutions 1.1 Why do many WordPress webmasters prefer to give up CDN? In the world of static sites, CDN is almost “free performance optimization”: static files are naturally suitable for caching, and HTML pages are also almost...

1 Preface In the previous article, I sorted out the core concepts and processes of RAG (see article: Home Data Center Series - Understanding RAG from Scratch (Part 1): Principles and Complete Process Analysis), but that was, after all, still at the theoretical level, mere talk on paper. To make RAG actually run, it is necessary...

1 Preface I have always had an idea—to build a chatbot for my blog so that it can understand the content of the articles in the blog and intelligently answer visitors' questions. At first glance, this requirement seems very simple, but in practice, it involves a series of unfamiliar and complex concepts: such as...

1 Preface My usual habit of using AI has actually always been very “simple”—the priority has always been like this: 1. ChatGPT official client (using free quota, anyway I don't use it much, occasionally exceeding the limit and waiting for a few hours, just as a forced break); 2. LobeChat...

1 Preface The AI learning map in my blog has not been updated for a while. It's not that my interest in AI has waned; on the contrary, many ideas and explorations have already taken shape in my mind. The reason that really made me stop is actually very simple: many practical scenarios ultimately cannot bypass “paid A...