Miscs on Vonng

Pigsty Goes Global: 1.44M Visitors, Zero Ad Revenue

rh@vonng.com (Ruohang Feng) — Thu, 19 Mar 2026 00:00:00 +0000

Over the last 30 days, pigsty.io served 1.44 million unique visitors, 18.11 million page views, and 1.1 TB of traffic. For a one-person open source project, the real asset here is not ad inventory. It is trust.

Genesis 2.0

rh@vonng.com (Ruohang Feng) — Mon, 09 Mar 2026 00:00:00 +0000

I asked Claude to write a short semi-realistic, semi-mythic story about mind uploading, orbital ascension, and the rebirth of gods. I suspect the premise is less absurd than it sounds.

Fully Loaded M5 Max: What Does a RMB 58,200 Laptop Look Like?

rh@vonng.com (Ruohang Feng) — Thu, 05 Mar 2026 00:00:00 +0000

Apple opened preorders for the M5 Max and I immediately maxed one out at RMB 58,200. This is less a consumer electronics post than a look at what an AI-era personal workstation is becoming.

2025 Year in Review: A Turning Point

rh@vonng.com (Ruohang Feng) — Wed, 31 Dec 2025 00:00:00 +0000

2025 felt unusually long. AI gave me a twentyfold productivity boost and gave Pigsty a real shot at competing with world-class distributions. From an independent open-source project growing against the odds to the practical reality of a one-person company, this is my review of the year.

2023 Year-End Summary: Thirty and Established

rh@vonng.com (Ruohang Feng) — Sat, 30 Dec 2023 00:00:00 +0000

In 2023, I turned thirty. As Confucius said, “At thirty, one establishes oneself.” I’ve managed to accomplish something - started a family, built a career, gained some technical reputation. A year-end review to commemorate 2023.

Modb Interviews Industry Leaders - Feng Ruohang

rh@vonng.com (Ruohang Feng) — Fri, 08 Sep 2023 00:00:00 +0000

Recently, a historic debate in the database industry has sparked heated discussion. The post-90s entrepreneur Feng Ruohang, known as the “ace debater” in the database community, has come into public view. Why did he participate in such technical debates that could potentially “start flame wars”? What are his views on the future development of databases? In this exclusive interview, we invite him to discuss his technical journey and hot topics in the database field!

ISD Dataset: Analyzing 120 Years of Global Climate Change

rh@vonng.com (Ruohang Feng) — Tue, 27 Jun 2023 00:00:00 +0000

ISD stands for Integrated Surface Dataset, a dataset published by NOAA (National Oceanic and Atmospheric Administration). I recently reorganized this dataset and provided related analysis tools.

Post-90s, Quit Job to Start Business, Says Will Crush Cloud Databases

rh@vonng.com (Ruohang Feng) — Thu, 07 Jul 2022 00:00:00 +0000

Recently gave an interview to OSC Open-Source China, discussing the motivation behind quitting my full-time job to start a business with Pigsty: making PostgreSQL easy to use for everyone, and crushing cloud databases!

The WeChat Photo Album Access Issue

rh@vonng.com (Ruohang Feng) — Sat, 09 Oct 2021 00:00:00 +0000

I saw news about WeChat accessing user photo albums in the background. While such shady behavior from Chinese apps doesn’t surprise me, in the spirit of seeking truth, I got up this morning to investigate whether WeChat is actually doing something malicious.

Life at 28

rh@vonng.com (Ruohang Feng) — Mon, 20 Sep 2021 00:00:00 +0000

My solar birthday falling on Mid-Autumn Festival is something that will only happen three times in my lifetime. Theoretically, this should be a memorable day, but the events of this year have left me numb.

Farewell to Grandfather

rh@vonng.com (Ruohang Feng) — Sat, 02 Jan 2021 00:00:00 +0000

Grandfather has passed away. I am beyond grief, but I should still write something in his memory.

Practical Cryptography Made Simple

rh@vonng.com (Ruohang Feng) — Thu, 12 Mar 2020 00:00:00 +0000

A classic problem in cryptography is how to transmit data securely and reliably through insecure channels. Protecting your chats and communications from surveillance and monitoring - easily achievable with just a computer.

The Sorrow of the Internet

rh@vonng.com (Ruohang Feng) — Wed, 12 Dec 2018 00:00:00 +0000

In Understanding the Internet, I discussed my views on the internet. Today, let’s talk about the part I deliberately omitted: the setbacks the internet will face.

New Year Reflections

rh@vonng.com (Ruohang Feng) — Mon, 10 Dec 2018 00:00:00 +0000

The future is not necessarily bright, but the path is definitely winding. During this rare leisure time alone in the New Year, I write these random thoughts, writing wherever my mind wanders.

Knowledge of China's Administrative Divisions

rh@vonng.com (Ruohang Feng) — Sun, 09 Dec 2018 00:00:00 +0000

China’s administrative divisions are divided into several levels. The constitution stipulates three levels, but there are actually five levels: the four-tier system of “province—region—county (district)—township,” which becomes five tiers when including the central level.

The Internet Winter

rh@vonng.com (Ruohang Feng) — Sun, 09 Dec 2018 00:00:00 +0000

It was the best of times, it was the worst of times. We were all going direct to Heaven, we were all going direct the other way.

Understanding the Internet

rh@vonng.com (Ruohang Feng) — Wed, 17 Oct 2018 00:00:00 +0000

The world trends flow mightily. Those who follow prosper; those who resist perish. This article discusses the essence of the internet, the world under internet rule, the transfer of power, and future impacts.

Several Levels of Learning Knowledge

rh@vonng.com (Ruohang Feng) — Wed, 18 Jul 2018 00:00:00 +0000

Through observation and contemplation, we can divide the process of deepening understanding in the mind from accepting knowledge to the highest level of “intuition” into four stages: knowledge, understanding, consciousness, and intuition.

Understanding Character Encoding

rh@vonng.com (Ruohang Feng) — Sun, 01 Jul 2018 00:00:00 +0000

Code is literally “encoding,” and everything collapses if you mishandle text. Here’s a practical tour of characters, glyphs, Unicode, and UTF encodings.

Starting from /0: Understanding Errors and Exceptions

rh@vonng.com (Ruohang Feng) — Wed, 09 Nov 2016 00:00:00 +0000

What happens when you divide by 0 in a computer? The answer isn’t fixed - it can differ across different operating systems, programming languages, and even different compilers.

Tag Classification Theory

rh@vonng.com (Ruohang Feng) — Thu, 03 Nov 2016 00:00:00 +0000

Recently, I needed to design a tag management system for a business. During the process of organizing existing tags, I developed this theoretical framework.

Overview of Sorting Algorithms

rh@vonng.com (Ruohang Feng) — Fri, 23 Sep 2016 00:00:00 +0000

Sorting algorithms are the most fundamental, widely applicable, and frequently tested algorithms in interviews. This article summarizes classic sorting algorithms: selection sort, insertion sort, bubble sort, shell sort, counting sort, quicksort, merge sort, and heap sort - their principles and implementations.

Baiji 1509 Training Reflections

rh@vonng.com (Ruohang Feng) — Fri, 25 Sep 2015 00:00:00 +0000

I once thought all day but learned nothing, which is not as good as what I learned in a moment. I came to Hangzhou to attend Alibaba’s Baiji training to learn from seniors and improve my knowledge level!

2014 Year-End Summary

rh@vonng.com (Ruohang Feng) — Thu, 01 Jan 2015 00:00:00 +0000

Unable to sleep in the dead of night, spending the last hour of 2014 reviewing this year and looking ahead to next year seems quite appropriate.

On Computational Thinking

rh@vonng.com (Ruohang Feng) — Sun, 11 May 2014 00:00:00 +0000

A paper for “History of Secrecy and Secrecy Systems” course, discussing computational thinking and its significance in undergraduate education, as well as methods for cultivating computational thinking among undergraduates.

In Praise of Mathematics

rh@vonng.com (Ruohang Feng) — Tue, 15 Apr 2014 00:00:00 +0000

What a wonderful subject mathematics is

2013 Year-End Summary

rh@vonng.com (Ruohang Feng) — Wed, 01 Jan 2014 00:00:00 +0000

In the final half hour of 2013, reflecting on my experiences this year fills me with deep emotion.

Computer Networks and Logistics Systems

rh@vonng.com (Ruohang Feng) — Sat, 14 Sep 2013 00:00:00 +0000

Computer networks are like a logistics system, with the only difference being that logistics systems transmit material entities like mail and packages, while computer networks transmit intangible information.

Worldview, Values, and Life Philosophy

rh@vonng.com (Ruohang Feng) — Tue, 04 Jun 2013 00:00:00 +0000

One inevitably traces back to questions about the world’s origins, and answering these questions is the process of establishing one’s cornerstone principles.

On the Hierarchy of Knowledge

rh@vonng.com (Ruohang Feng) — Thu, 23 May 2013 00:00:00 +0000

Through observation and reflection, we can divide the mental process of deepening understanding from accepting knowledge to the highest level of ’enlightenment’ into four stages: knowledge, understanding, consciousness, and enlightenment.

Thinking Characteristics of Eastern and Western People

rh@vonng.com (Ruohang Feng) — Wed, 22 May 2013 00:00:00 +0000

Eastern people emphasize macro-to-micro thinking, while Western people emphasize micro-to-macro thinking. In my view, this is the philosophical root of East-West thinking differences and many macro distinctions.

What Exactly Are Natural Numbers?

rh@vonng.com (Ruohang Feng) — Fri, 26 Apr 2013 00:00:00 +0000

The concept of natural numbers should have been learned in elementary school. The foundation of all elementary mathematics begins with such a definition. However, when I entered university, I encountered this question again in discrete mathematics.

Views on Love

rh@vonng.com (Ruohang Feng) — Sun, 12 Aug 2012 00:00:00 +0000

Recently, my roommate broke up with his girlfriend. What was once a lovey-dovey, inseparable couple suddenly separated just like that. This inevitably made me start thinking about some questions I hadn’t carefully considered before: What ultimately determines romance and marriage?