I'm Vonng

Ruohang Feng

Founder / CEO at Pigsty

Founder of PanJiYunShu, MiraclePlus (former YC China) S22 project. TGO member.
Author of Pigsty, the battery-included distribution for PostgreSQL and free RDS alternative.
PostgreSQL Expert, Full-Stack Engineer, Backend Architect @ Apple, TanTan, Alibaba.

About Myself

Developer
Architect
DBA
SRE
Analyst
Entrepreneur

Skills

PostgreSQL
PostgreSQL

Expertise in PostgreSQL, Evangelist / KOL in China.
Author & Founder of the OSS PostgreSQL Distribution and Free RDS Alternative —— Pigsty
Database
Database

Handy with various data systems: MySQL, Redis, MinIO, etcd, MongoDB, Greenplum, HBase, Cassandra, ODPS, Consul, Loki, Prometheus, VictoriaMetrics, etc…
Administration / DBRE
Administration / DBRE

Reliability engineering for database systems: backup & recovery, PITR & HA, monitoring & alerting, securing & auditing, performance tuning and SQL optimization, etc…
Go
Go

Write robust, maintainable & high performance programs using Golang: web service, metrics exporters, command line tools, crawlers, ETL pipelines, Data Parsers, etc…
Programming Languages
Programming Languages

Solving problems with different programming languages: Golang, Python, Javascript, Java, C#, C++, C, Matlab, R, Lua, Rust, Bash, SQL, etc…
Domain Knowledge
Domain Knowledge

Domain knowledge about: Web Frontend/Backend, Cloud, Networking, Hardware, Manufacturing Operation, GIS, Meteorology, Machine Learning and Information Security,…
Data Analysis & Visualization
Data Analysis & Visualization

Performing data analysis with advanced SQL and Python, R, Matlab, Excel,… Rich experience on making interactive visualization pieces with Grafana, echarts, and D3.js.
Grafana Stack
Grafana Stack

Manage the entire LGTM Stack: Grafana / Loki. Drawing sophisticated dashboards and designing visualizations. Developing data apps, plugins and panels with Grafana
Prometheus Stack
Prometheus Stack

Setup & configure Prometheus / VictoriaMetrics Stack Designing record & alert rules. Writing PromQL queries and metric exporters. Maintaining public yum/apt repos.
Linux Distributions
Linux Distributions

Familiar with many Linux distributions: RHEL / CentOS / Rocky, Ubuntu, Debian, … Maintaining public yum/apt repos for pgsql extensions, redis, minio, prometheus, etc…
Ansible Automation
Ansible Automation

Write reusable ansible roles and sophisticated playbooks. Designing highly automated provisioning solution in an Infrastructure as Code (IaC) way based on Ansible.
Traffic Control
Traffic Control

Configuring web server with Nginx; Manage load balancer with HAProxy; Customize API gateway such as Kong; Route traffic with LVS & keepalived.
Cloud Service
Cloud Service

Orchestrating and manage cloud services such as S3, EC2, EBS, CDN, RDS, etc… on AWS, Aliyun, Cloudflare and QCloud. FinOps practitioner and Cloud Exit evangelist.
CloudNative Stack
CloudNative Stack

Managing application on kubernetes, Deploy k8s & etcd services and using operators. Making docker images, setup registry and writing compose files.
HashiStack
HashiStack

IaC: Provisioning cloud infrastructure with Terraform; Setup service mesh with consul; Provision local sandbox with vagrant; Create custom images with packer.

Experiences

1
Founder / CEO
PanJiYunShu / Pigsty

Apr 2022 - Present, Beijing

Free RDS Alternative, Battery-Included PostgreSQL Distribution & OSS DBaaS. MiraclePlus (former YC China) S22 project.

Responsibilities:
  • one-man army
TanTan Co. Ltd

Dec 2017 - Apr 2022, Beijing

Tinder in China. The second largest stranger social platform in China

PostgreSQL Expert

Nov 2019 - Apr 2022

  • PostgreSQL Distribution/Solution Development
  • Building Infrastructure for DBA and Developers
PostgreSQL DBA

Dec 2017 - Dec 2018

  • Database Administration
2
3
Software Developer ICT4
Apple, APO (ShangHai) Co. Ltd

Dec 2018 - Jun 2019, ShangHai

Apple (AAPL) deliver the best electronic devices in the world. And we deliver best factory monitoring & tracing system for Apple.

Responsibilities:
  • Trace for iPhone
  • Trace data warehouse
  • Trace database administration
Alibaba (Beijing) Co. Ltd

Jue 2014 - Dec 2017, Beijing

Data intelligence department of the largest e-commerce company – Alibaba (BABA)

Full-Stack Developer

Aug 2015 - Dec 2017

  • Project FinPlus
  • Project Oplus
  • UMeng Data Platform
  • Knowledge Database
Algorithm Engineer (Intern)

Jue 2014 - Sep 2014

  • Designing and maintain Index for Cloud Recommendation System
4

Projects

Pigsty
Pigsty
Owner March 2019 - Present

Pigsty, Free RDS Alternative & OSS PostgreSQL Distribution.

Star
Capslock
Capslock
Owner 2016

Transform Capslock into a versatile modifier key

Star
DDIA
DDIA
Owner 2018

ZH translation of 《Designing Data-Intensive Applications》

Star
PG Internal
PG Internal
Owner 2018

ZH translation of 《PG Internal》. PG Kernel book.

Details
PG Exporter
PG Exporter
Owner March 2019 - Present

Prometheus exporter for PostgreSQL & Pgbouncer metrics.

Star
ACDAT in Go
ACDAT in Go
Owner 2018

Aho-Corasick Automaton with Double Array Trie.

Star
MaxCompute Go SDK
MaxCompute Go SDK
Original Owner 2017

Golang SDK for alibaba’s datawarehouse ODPS (Aliyun MaxCompute)

Star
FDW Paper
FDW Paper
Co-Author June 2017

NPC2017: Unified Access Layer with PostgreSQL FDW for Heterogeneous Databases

Star
Postgres Notes
Postgres Notes
Owner Dec 2017 - Now

Notes, articles, gist, scripts, snippet —— Everything about the most advanced open source relational database: PostgreSQL.

Star
ISD - Weather Station Data Visualization
ISD - Weather Station Data Visualization
Owner Sep 2020

Analyze and Visualize ISD Dataset —— sub-hourly weather observation records from 30000+ stations since 1900.

Star
iTunes Search API for Golang
iTunes Search API for Golang
Owner Sep 2017

Golang wrapper for iTunes Search API. Can be used for crawler. Also Provides a binary tool for quick search.

Star
Adcode —— China Admin Division Dataset
Adcode —— China Admin Division Dataset
Owner Sep 2017

China Administrative Division Dataset. 5 levels from stats.gov with geo fences from Ministry of Civil Affairs and Gaode Map.

Star
PG Architecture Overhaul
PG Architecture Overhaul
TL 2021

Upgrade 200+ existing PostgreSQL Instance (1PB) to Pigsty deployment. (CentOS7, PostgreSQL 13)

Database Observability
Database Observability
TL 2020

Build monitoring, logging, alerting system for PostgreSQL, Redis, MinIO and TTDB.

Microservice Refaction
Microservice Refaction
DBA 2018

Split 20 monolith database into 200 microservice databases with ton’s of OS / DB online migration & upgrade.

Trace for iPhone
Trace for iPhone
Software Developer 2019

Make exising tracing model works on iPhone factories

Trace Data Warehouse
Trace Data Warehouse
Software Developer 2019

Desiging trace data warehouse schema, build ETL & streaming processing pipeline. Rewrite existing logic and makes it 10~100x faster

Trace Database Admin
Trace Database Admin
DBA 2018

Build monitoring infrastructures and backup infrastructure. Handling database failures. Analyze performance issues and optimizing slow queries.

Umeng DMP
Umeng DMP
Full-Stack Developer 2017

Designing and managing database system for Umeng. Migrating HBase and MongoDB to Postgres. Build and maintain a knowledge database for DMP.

Details
OPlus
OPlus
Soft-Hardware Developer 2015

Wi-Fi probe for offline user profile. Plays a versatile role in it: Software, Hardware, Ops, DBA, Data Analyst,BD,etc…

Details
Finplus
Finplus
Co-Founder 2016

Architect, tech leader, and 1 of 3 co-founders of Project FinPlus, Credit score (FICO) service in China with 10M$ ARR.

Details

Activity

Grand Tour

California State Route 1

Mt.Everest East Face Base Trek

Trek on Wusu, Xinjiang

Solo Trek on Rock Shangri-La

Trek on Kanas

Trek on Meili, Mt. Kawagarbo , 2021

South Taihong

Manchuria Tour

Ice Climbing

Lecture in Dalian University of Technology

Tantan 2021 Carnival Host

First TanTan Coding Champion

Vonng: Github User Ranking No.502

Pigsty: OSSRank No.36 in PostgreSQL ecosystem