Archive

2026¹⁶

August¹

Introducing StreamVault: A Self-Hosted Media Archival Server

August 30, 2026 · 7 min · Oscar Zhou

July¹

[Docker] Why Your Self-Hosted Docker Registry Fails with `x509: certificate signed by unknown authority`

July 5, 2026 · 7 min · Oscar Zhou

June¹

[Golang] Mastering Concurrency Testing with `synctest` package

June 20, 2026 · 6 min · Oscar Zhou

April⁵

[Golang] Writing Elegant Go Code Without Overengineering It

April 25, 2026 · 7 min · Oscar Zhou

[Golang] Mastering Dependency Inversion: Keep Your Go Code Clean

April 18, 2026 · 5 min · Oscar Zhou

[Docker/Traefik] A Production-Ready Traefik Setup with Docker Compose

April 12, 2026 · 7 min · Oscar Zhou

[Golang] Understanding TCP: Debunking Misconceptions with Practical Examples

April 11, 2026 · 5 min · Oscar Zhou

[OCI] How to Open a Port on an OCI Instance

April 3, 2026 · 6 min · Oscar Zhou

March²

[Golang] Avoid Using `defer mu.Unlock()` Inside Loops

March 28, 2026 · 3 min · Oscar Zhou

[Kubernetes] Wait… Why Does Kubernetes Still Ask Me to Create a PersistentVolume? - The Storage Confusion Most Kubernetes Learners Hit

March 1, 2026 · 5 min · Oscar Zhou

February¹

[Golang] Stop Returning `(nil, nil)` in Go: A Small API Design Choice That Prevents Big Bugs

February 7, 2026 · 5 min · Oscar Zhou

January⁵

[TLS] PEM vs CRT vs KEY Explained: Stop Guessing TLS Certificate Formats

January 11, 2026 · 5 min · Oscar Zhou

Local HTTPS with Nginx in Minutes: A Practical Dev & Debug Setup (No Domain, No Public IP)

January 10, 2026 · 5 min · Oscar Zhou

The Pragmatic Way to Handle Multiple Errors in Go (Before and After Go 1.20)

January 4, 2026 · 5 min · Oscar Zhou

[Docker] How to Safely Extract Data from a Docker Volume Using a Third Container

January 3, 2026 · 3 min · Oscar Zhou

Refreshing Web Page Logs Out the User When Using Traefik in Docker Swarm

January 1, 2026 · 5 min · Oscar Zhou

2025³⁵

December⁵

How Web Authentication (Cookies, Sessions, JWT) Actually Works

December 31, 2025 · 5 min · Oscar Zhou

[Kubernetes/K3s] Setting Up a Local Multi-Node Kubernetes Cluster on Different Operating Systems

December 30, 2025 · 3 min · Oscar Zhou

[Git/GPG] Fix the “Inappropriate ioctl for device” Error when Signing GPG Keys

December 20, 2025 · 3 min · Oscar Zhou

Setup DroneCI Server and Runner for Github Repository (Compose File Takeaway)

December 13, 2025 · 6 min · Oscar Zhou

Docker Bind Mount Not Updating? Why File Edits Fail but Directories Work

December 4, 2025 · 4 min · Oscar Zhou

November⁷

[Docker/Traefik] Resolving Intermittent Frontend Loading and 504 Errors Behind a Traefik Reverse Proxy (Update 2025-11)

November 29, 2025 · 4 min · Oscar Zhou

Introducing OneClickTLS: Generate Self-Signed TLS and mTLS Certificates Instantly

November 15, 2025 · 4 min · Oscar Zhou

[n8n/Ollama] How to Run n8n in Docker for AI Workflow with Local Ollama Service (Windows Example)

November 8, 2025 · 4 min · Oscar Zhou

[Docker] Simple Script to Build and Push ’latest’ Docker Images with Small Changes for Pull Image Debugging

November 6, 2025 · 3 min · Oscar Zhou

[Kubernetes] How to Debug Programs That Use the Kubernetes Client SDK in VSCode (Golang Example)

November 4, 2025 · 6 min · Oscar Zhou

[Docker] `docker exec` API Responses returns Garbage Characters

November 3, 2025 · 3 min · Oscar Zhou

[n8n] How to Save Text into a Downloadable File

November 1, 2025 · 3 min · Oscar Zhou

October⁶

[Golang] Exploring the Observer Design Pattern with Code Example

October 29, 2025 · 4 min · Oscar Zhou

[Cryptography] Understanding Public Key, Private Key, and Certificate with a Real-Life Analogy

October 25, 2025 · 6 min · Oscar Zhou

[n8n] A Reliable Alternative for the Broken IMAP Node in n8n

October 19, 2025 · 3 min · Oscar Zhou

How to Forward the Real Client IP Through Traefik in Docker Swarm

October 18, 2025 · 3 min · Oscar Zhou

[GithubAction] ’npm error Exit handler never called!’ in GitHub Actions

October 17, 2025 · 2 min · Oscar Zhou

Understanding Docker Credential Resolution: A Deep Dive for Developers

October 13, 2025 · 5 min · Oscar Zhou

September³

[NextCloud] Don’t Panic: Updating NextCloud with the Command-Line Updater

September 27, 2025 · 2 min · Oscar Zhou

[n8n/MinIO] Troubleshooting the ‘Cannot Read Properties of Undefined’ Error

September 21, 2025 · 2 min · Oscar Zhou

[DecapCMS/NetlifyCMS] Invalid String Length Error

September 19, 2025 · 2 min · Oscar Zhou

August³

[n8n] Processing User-Uploaded CSV Files: The Code Node Solution

August 22, 2025 · 3 min · Oscar Zhou

[GitHubRunner] How to Set Up a Self-Hosted GitHub Runner in a DigitalOcean Droplet

August 20, 2025 · 3 min · Oscar Zhou

[Seatable] SMTP Configuration Issues in Self-Hosted Seatable

August 8, 2025 · 2 min · Oscar Zhou

July²

[Docker/Registry] Troubleshooting Image Pull Failures in Self-Built Container Management Tool that Uses Docker Compose SDK

July 30, 2025 · 3 min · Oscar Zhou

Creating a Bootable Linux USB Drive on Windows with Rufus

July 12, 2025 · 2 min · Oscar Zhou

June¹

[Docker] Mounted Folder Becomes Empty After Redeploy in Docker Compose

June 11, 2025 · 3 min · Oscar Zhou

May²

[Docker] Understanding `docker stack deploy --prune` in Docker Swarm

May 10, 2025 · 2 min · Oscar Zhou

[Golang] Efficient String Parsing in Go: Why strings.Cut is Your Go-To Function

May 3, 2025 · 2 min · Oscar Zhou

April²

[Golang/CVE] Why Your Playwright Tests Might Fail After Updating gorilla/csrf to Fix CVE-2024-24787

April 22, 2025 · 2 min · Oscar Zhou

[Golang] Why You Should Use errors.As Instead of Type Assertions err.(*MyError)

April 3, 2025 · 4 min · Oscar Zhou

March³

[K8s/TLS] How to Create Local Kubernetes Cluster with Custom TLS Certificates in WSL

March 11, 2025 · 4 min · Oscar Zhou

[Linode/TLS] Setting Up TLS and DNS for Linode Object Storage: A Workaround for Static Website Hosting ✨

March 3, 2025 · 3 min · Oscar Zhou

Introducing Bookmark Blitz: Your Ultimate Bookmark Manager 🚀

March 2, 2025 · 2 min · Oscar Zhou

January¹

[FastIndex]Installing FastIndex on DigitalOcean: A Step-by-Step Guide

January 4, 2025 · 3 min · Oscar Zhou

2024⁷

March¹

Bookmark Blitz Release Notes🚧

March 18, 2025 · 1 min · Oscar Zhou

November¹

[Git] How to Sign Existing Git Commits with GPG Key

November 26, 2024 · 4 min · Oscar Zhou

October²

[Lambda/NodeJS] Lambda Stop Working After Updating to Node.js 20

October 12, 2024 · 3 min · Oscar Zhou

[Security/Gitea] How to Secure Your Public Gitea Server Without Complex Configuration

October 9, 2024 · 5 min · Oscar Zhou

January³

[Linux] How to Excute Binary in Background

January 27, 2024 · 3 min · Oscar Zhou

[Jellyfin] Windows Tray Will Not Start Server

January 7, 2024 · 3 min · Oscar Zhou

[Web/Golang] What is CORS Error and How to Fix it in Golang

January 6, 2024 · 8 min · Oscar Zhou

2023¹⁸

December¹

[DroneCI/Slack] How to Send CI Build Notification with Slack (Step by Step Tutorial)

December 30, 2023 · 3 min · Oscar Zhou

September¹

[Golang] Retaining Specific Folders and Removing the Rest under A Target Path

September 10, 2023 · 2 min · Oscar Zhou

August²

[mTLS] How to Generate Self-Signed mTLS Certs and Keys in 10s (No Click Bait)

August 22, 2023 · 10 min · Oscar Zhou

[ent/SQLite3] insert nodes to table “users”: near “RETURNING”: syntax error

August 5, 2023 · 1 min · Oscar Zhou

July³

[Traefik/OCI] Exposing Internal Non-Containerized Services with Traefik on OCI: A Step-by-Step Guide

July 22, 2023 · 4 min · Oscar Zhou

[Gitea] RewriteAllPublicKeys failed: open /data/.ssh/authorized_keys.tmp: permission denied

July 17, 2023 · 2 min · Oscar Zhou

[OCI/Swarm] How to Fix the “connect: no route to host” Error When Joining a Docker Swarm in OCI VM

July 7, 2023 · 3 min · Oscar Zhou

June¹

[SFTP/SaaS] How does Cloud-Based SFTP SaaS work?

June 3, 2023 · 6 min · Oscar Zhou

May²

[Docker/DinD] Empowering Local Development: Simulating Mass Containers and Docker Swarm Nodes with Docker-in-Docker (DinD)

May 18, 2023 · 7 min · Oscar Zhou

[Golang/VSCode] Master Golang Debugging in VSCode: Step-by-Step Guide with Delve

May 10, 2023 · 3 min · Oscar Zhou

April¹

[DroneCI] How to Specify Pipelines to Run on the Particular Drone CI Runner

April 6, 2023 · 3 min · Oscar Zhou

March²

[Dockerfile] How to Prevent Docker Container from SSHing

March 20, 2023 · 1 min · Oscar Zhou

[OCI] Error: “iptables failed: iptables –wait -t filter -A DOCKER”

March 12, 2023 · 2 min · Oscar Zhou

February²

[Golang] Implementing Timeout Feature in Golang for Efficient Task Processing and Error Handling

February 22, 2023 · 2 min · Oscar Zhou

[Docker] Configure Custom TLS Certificates for Docker API Using Docker-in-Docker

February 15, 2023 · 2 min · Oscar Zhou

January³

[Portainer] Web UI for Self-Host Docker Registry

January 21, 2023 · 3 min · Oscar Zhou

[WSL/Swarm] Fail to Join Docker Swarm as Worker

January 14, 2023 · 4 min · Oscar Zhou

[Multipass] Command Cheatsheet

January 13, 2023 · 2 min · Oscar Zhou

2022⁴⁶

December⁵

[OCI] How to Setup Self-Host SMTP Server on Oracle Cloud Infrastracture($0 cost)

December 6, 2022 · 3 min · Oscar Zhou

[Linux] How to Compress Folder and Decompress File

December 3, 2022 · 3 min · Oscar Zhou

[Linux] How to Download Files and Folders from Remote Server

December 2, 2022 · 2 min · Oscar Zhou

[Mail Server] What is DKIM

December 2, 2022 · 1 min · Oscar Zhou

[Mail Server] What is SMTP Server

December 1, 2022 · 1 min · Oscar Zhou

November²

[DroneCI] How to Build Multiarch Docker Image for Private Registry

November 11, 2022 · 3 min · Oscar Zhou

[WSL] cgo: C compiler ‘gcc’ not found

November 3, 2022 · 1 min · Oscar Zhou

October⁴

[WSL] Could not access the service hosted in WSL from host by IP

October 28, 2022 · 1 min · Oscar Zhou

[Golang] go get: fatal: could not read Username for ‘xxx’: terminal prompts disabled

October 18, 2022 · 3 min · Oscar Zhou

[Wget] Unable to locally verify the issuer’s authority

October 17, 2022 · 3 min · Oscar Zhou

[Git] How to configure SSH profile for Github account

October 7, 2022 · 5 min · Oscar Zhou

August¹

[Nginx] Expose specified port for Nginx in Dockerfile

August 15, 2022 · 1 min · Oscar Zhou

July⁶

[LDAP] How to set up local Open LDAP service

July 27, 2022 · 5 min · Oscar Zhou

[cfssl] How to generate the custom TLS certificate in 2 mins

July 26, 2022 · 3 min · Oscar Zhou

[VSCode] module lookup disabled by GOPROXY

July 18, 2022 · 1 min · Oscar Zhou

[Golang] Code snippets - Semver comparison

July 14, 2022 · 1 min · Oscar Zhou

[Windows] Enable Windows default SSH server

July 10, 2022 · 2 min · Oscar Zhou

[Yarn] Unable to connect to github.com

July 2, 2022 · 1 min · Oscar Zhou

June⁸

[Golang] Write a simple CLI program

June 30, 2022 · 2 min · Oscar Zhou

[Golang] Create Dockerfile for golang app

June 28, 2022 · 2 min · Oscar Zhou

[Golang] How to import a package on the specific version

June 21, 2022 · 2 min · Oscar Zhou

[Dokku] Command Cheatsheet

June 12, 2022 · 1 min · Oscar Zhou

[Dokku] How to set up dokku to deploy docker image

June 11, 2022 · 3 min · Oscar Zhou

[Dokku] Network understanding

June 10, 2022 · 2 min · Oscar Zhou

[Dokku] How to install Dokku with Portainer

June 9, 2022 · 4 min · Oscar Zhou

[DroneCI] How to Configure Pipeline to Build and Push Docker Image

June 8, 2022 · 2 min · Oscar Zhou

May⁷

[Golang] Direct request from http to https with reverse proxy

May 17, 2022 · 1 min · Oscar Zhou

[Nomad] How to mount the host path to docker task

May 17, 2022 · 2 min · Oscar Zhou

[Notepad++/Linux] How to install notepad++ on Ubuntu without using Snap

May 10, 2022 · 1 min · Oscar Zhou

[VSCode] Golang No definition found

May 10, 2022 · 2 min · Oscar Zhou

[Nomad] source path must be a file

May 8, 2022 · 1 min · Oscar Zhou

[GIMP/Linux] How to highlight on the screenshot with GIMP on Linux

May 4, 2022 · 2 min · Oscar Zhou

[Slack] no_text error with Slack integration

May 3, 2022 · 2 min · Oscar Zhou

April⁵

[Helm] How to check semantic version in helm chart

April 29, 2022 · 2 min · Oscar Zhou

[Git] Unable access xxx: Is a directory

April 21, 2022 · 1 min · Oscar Zhou

[Git] Error: remote rejected (permission denied)

April 12, 2022 · 1 min · Oscar Zhou

[Git] Fatal: this operation must be run in a work tree

April 12, 2022 · 1 min · Oscar Zhou

[Git] How to rebase the pushed branch

April 7, 2022 · 4 min · Oscar Zhou

March⁸

[Axios] How to extract header data in Axios response interceptor

March 26, 2022 · 2 min · Oscar Zhou

[Linux] Error: ENOSPC: System limit …

March 22, 2022 · 1 min · Oscar Zhou

[Ubuntu] How to mount the external hard drive permanently

March 19, 2022 · 3 min · Oscar Zhou

[Ubuntu] External hard drive is read-only

March 12, 2022 · 1 min · Oscar Zhou

[microk8s] Troubleshooting Microk8s Installation on macOS

March 8, 2022 · 1 min · Oscar Zhou

[Git] How to work with remote repository (with example)

March 5, 2022 · 3 min · Oscar Zhou

[Git] How to ignore the commited file

March 3, 2022 · 1 min · Oscar Zhou

[macOS] How to set environment variable on macOS

March 3, 2022 · 1 min · Oscar Zhou

2021⁶

December¹

[Inkscape] How to smooth svg file with Inkscape

December 19, 2021 · 1 min · Oscar Zhou

September²

[Inkscape] How to Convert Svg to Png with Inkscape

September 10, 2021 · 1 min · Oscar Zhou

[HTTPS/TLS] How does HTTPs work

September 9, 2021 · 2 min · Oscar Zhou

June³

[Inkscape] How to create SVG file with an existing SVG image

June 30, 2021 · 1 min · Oscar Zhou

[Inkscape] How to create SVG file with an existing PNG image

June 30, 2021 · 1 min · Oscar Zhou

[Golang] How to parse the JSON arguments from the Command-line flags

June 12, 2021 · 3 min · Oscar Zhou

2019²

December¹

[HackerRank] Simple Explanation: Flatland Space Stations

December 12, 2019 · 3 min · Oscar Zhou

June¹

[Golang] reflect all

June 20, 2019 · 2 min · Oscar Zhou

2026 16

August 1

Introducing StreamVault: A Self-Hosted Media Archival Server

July 1

[Docker] Why Your Self-Hosted Docker Registry Fails with x509: certificate signed by unknown authority

June 1

[Golang] Mastering Concurrency Testing with synctest package

April 5

[Golang] Writing Elegant Go Code Without Overengineering It

[Golang] Mastering Dependency Inversion: Keep Your Go Code Clean

[Docker/Traefik] A Production-Ready Traefik Setup with Docker Compose

[Golang] Understanding TCP: Debunking Misconceptions with Practical Examples

[OCI] How to Open a Port on an OCI Instance

March 2

[Golang] Avoid Using defer mu.Unlock() Inside Loops

[Kubernetes] Wait… Why Does Kubernetes Still Ask Me to Create a PersistentVolume? - The Storage Confusion Most Kubernetes Learners Hit

February 1

[Golang] Stop Returning (nil, nil) in Go: A Small API Design Choice That Prevents Big Bugs

January 5

[TLS] PEM vs CRT vs KEY Explained: Stop Guessing TLS Certificate Formats

Local HTTPS with Nginx in Minutes: A Practical Dev & Debug Setup (No Domain, No Public IP)

The Pragmatic Way to Handle Multiple Errors in Go (Before and After Go 1.20)

[Docker] How to Safely Extract Data from a Docker Volume Using a Third Container

Refreshing Web Page Logs Out the User When Using Traefik in Docker Swarm

2025 35

December 5

How Web Authentication (Cookies, Sessions, JWT) Actually Works

[Kubernetes/K3s] Setting Up a Local Multi-Node Kubernetes Cluster on Different Operating Systems

[Git/GPG] Fix the “Inappropriate ioctl for device” Error when Signing GPG Keys

Setup DroneCI Server and Runner for Github Repository (Compose File Takeaway)

Docker Bind Mount Not Updating? Why File Edits Fail but Directories Work

November 7

[Docker/Traefik] Resolving Intermittent Frontend Loading and 504 Errors Behind a Traefik Reverse Proxy (Update 2025-11)

Introducing OneClickTLS: Generate Self-Signed TLS and mTLS Certificates Instantly

[n8n/Ollama] How to Run n8n in Docker for AI Workflow with Local Ollama Service (Windows Example)

[Docker] Simple Script to Build and Push ’latest’ Docker Images with Small Changes for Pull Image Debugging

[Kubernetes] How to Debug Programs That Use the Kubernetes Client SDK in VSCode (Golang Example)

[Docker] docker exec API Responses returns Garbage Characters

[n8n] How to Save Text into a Downloadable File

October 6

[Golang] Exploring the Observer Design Pattern with Code Example

[Cryptography] Understanding Public Key, Private Key, and Certificate with a Real-Life Analogy

[n8n] A Reliable Alternative for the Broken IMAP Node in n8n

How to Forward the Real Client IP Through Traefik in Docker Swarm

[GithubAction] ’npm error Exit handler never called!’ in GitHub Actions

Understanding Docker Credential Resolution: A Deep Dive for Developers

September 3

[NextCloud] Don’t Panic: Updating NextCloud with the Command-Line Updater

[n8n/MinIO] Troubleshooting the ‘Cannot Read Properties of Undefined’ Error

[DecapCMS/NetlifyCMS] Invalid String Length Error

August 3

[n8n] Processing User-Uploaded CSV Files: The Code Node Solution

[GitHubRunner] How to Set Up a Self-Hosted GitHub Runner in a DigitalOcean Droplet

[Seatable] SMTP Configuration Issues in Self-Hosted Seatable

July 2

[Docker/Registry] Troubleshooting Image Pull Failures in Self-Built Container Management Tool that Uses Docker Compose SDK

Creating a Bootable Linux USB Drive on Windows with Rufus

June 1

[Docker] Mounted Folder Becomes Empty After Redeploy in Docker Compose

May 2

[Docker] Understanding docker stack deploy --prune in Docker Swarm

[Golang] Efficient String Parsing in Go: Why strings.Cut is Your Go-To Function

April 2

[Golang/CVE] Why Your Playwright Tests Might Fail After Updating gorilla/csrf to Fix CVE-2024-24787

[Golang] Why You Should Use errors.As Instead of Type Assertions err.(*MyError)

March 3

[K8s/TLS] How to Create Local Kubernetes Cluster with Custom TLS Certificates in WSL

[Linode/TLS] Setting Up TLS and DNS for Linode Object Storage: A Workaround for Static Website Hosting ✨

Introducing Bookmark Blitz: Your Ultimate Bookmark Manager 🚀

January 1

[FastIndex]Installing FastIndex on DigitalOcean: A Step-by-Step Guide

2024 7

March 1

Bookmark Blitz Release Notes🚧

November 1

[Git] How to Sign Existing Git Commits with GPG Key

October 2

[Lambda/NodeJS] Lambda Stop Working After Updating to Node.js 20

[Security/Gitea] How to Secure Your Public Gitea Server Without Complex Configuration

January 3

2026¹⁶

August¹

July¹

[Docker] Why Your Self-Hosted Docker Registry Fails with `x509: certificate signed by unknown authority`

June¹

[Golang] Mastering Concurrency Testing with `synctest` package

April⁵

March²

[Golang] Avoid Using `defer mu.Unlock()` Inside Loops

February¹

[Golang] Stop Returning `(nil, nil)` in Go: A Small API Design Choice That Prevents Big Bugs

January⁵

2025³⁵

December⁵

November⁷

[Docker] `docker exec` API Responses returns Garbage Characters

October⁶

September³

August³

July²

June¹

May²

[Docker] Understanding `docker stack deploy --prune` in Docker Swarm

April²

March³

January¹

2024⁷

March¹

November¹

October²

January³

2023¹⁸

December¹

September¹

August²

July³

June¹

May²

April¹

March²

February²

January³

2022⁴⁶

December⁵

November²

October⁴

August¹

July⁶

June⁸

May⁷