Technical Documentation Repository

A comprehensive collection of development guides, setup instructions, and reference materials for software engineering.

🌐 Live Site: https://anishk835.github.io/docs/

📑 Table of Contents

Version Control
Build Tools
Java & Spring
Containerization
Orchestration
Node.js
System Administration
Development Environment
Scripts & Utilities
Learning Resources

🔧 Version Control

Git

Git Cheat Sheet - Essential Git commands and workflows
- Delete merged/stale branches
- Decorate git logs with colors and formatting
- Add branch name to terminal prompt
Git Local Exclude Setup Guide - Configure local file exclusions
- Use .git/info/exclude for personal file patterns
- Keep .gitignore clean for team-wide patterns
- Complete setup with examples and troubleshooting

🏗️ Build Tools

Maven

Maven Info - Maven build tool useful commands
- Dependency analysis and security scanning
- Plugin diagnostics and version management
- Build plan inspection and optimization
- License and report generation

☕ Java & Spring

Spring Framework

Spring Security in Detail - Comprehensive Spring Security guide
- Configure web MVC without Spring Boot auto-configure
- Security architecture and authentication flow
- Custom authentication providers and filters
- UserDetails, AuthenticationManager, and ProviderManager
- Filter chain configuration and best practices

Testing

Migration JUnit 4 to JUnit 5 - Complete migration guide
- JUnit 5 architecture (Platform, Jupiter, Vintage)
- Annotation changes and Mockito integration
- Maven Surefire plugin configuration
- Common migration patterns and tips

Performance

Memory Efficient Java Code - Java memory optimization techniques
- Object memory footprint and GC tuning
- Heap size configuration and sweeping methods
- Avoid memory leaks and best practices
- Primitive types vs. boxing in Java 8

🐳 Containerization

Docker

Docker Commands - Essential Docker commands
- Container management and cleanup
- Image operations and tagging
- Volume mounting and environment files
- Best practices and troubleshooting
Docker Uninstall Script - Clean Docker installation removal

☸️ Orchestration

Kubernetes

Kubernetes Notes - Kubernetes cluster management
- Multi-node cluster setup
- Service discovery and DNS configuration
- Logging with Fluentd and Supervisord
- kubectl commands and best practices
- Tutorial and practice resources

DC/OS

DCOS Local Universe - DC/OS local universe setup
- Repository cloning and Python 3 setup
- Docker daemon configuration and proxy setup
- Marathon and package configuration

🟢 Node.js

Node Installation Guide - Install Node.js using nvm
- Install Node Version Manager (nvm) via Homebrew
- List and install specific Node.js versions
- Manage multiple Node.js installations

Scripts

Install Node using npm - npm-based installation
Install Node using nvm - nvm-based installation

🖥️ System Administration

Unix/Linux

Unix Permissions & TCP Commands - System administration basics
- File and directory permissions (rwx)
- tcpdump packet capture and analysis
- Network debugging and monitoring
- Disk usage commands

🛠️ Development Environment

Configuration

.zshrc Configuration - Zsh shell configuration
- Git branch display in terminal prompt
- Command history optimization
- jenv for Java version management
- nvm for Node.js version management
- fzf integration for fuzzy finding

Troubleshooting

Dev Setup Issues & Fixes - Common development issues
- Node.js library installation errors
- Migrate Git SSH to HTTPS
- Personal access token setup
- Git fast-forward conflicts

📜 Scripts & Utilities

System Scripts

RSS by PID - Monitor memory usage by process ID
Tar/Untar Scripts - Archive compression utilities

Grid Computing

Grid Computing Examples - C programs for parallel computing

📚 Learning Resources

Blogs & References - Curated technical articles
- Distributed Systems: LinkedIn’s Real-Time Presence Platform
- Containers: Docker, containerd, Kata, Firecracker comparison
- Virtualization: Protection rings and architecture
- Java: Zero-copy I/O, Maven multi-module projects
- Spring Data: JPA performance optimization
- File Systems: Red Hat Enterprise Linux filesystem guide

🖼️ Diagrams & Images

All diagrams and images referenced in the documentation are stored in the images/ directory:

Spring Security architecture diagrams
JUnit 5 architecture visualizations
Authentication flow charts

See images/README.md for details.

📝 Usage

# Clone this repository
git clone <repository-url>
cd docs

# Search for specific topics
grep -r "Spring Security" .
grep -r "Docker" .

# Open specific guide
open spring-security.md

Contributing

When adding new documentation:

Place files in appropriate category directories
Update this README with links and descriptions
Use clear, descriptive filenames
Include code examples where applicable
Add diagrams to images/ directory

🏷️ Categories Overview

Category	Files	Description
Git	2 files	Version control commands and configuration
Maven	1 file	Build tool commands and diagnostics
Java/Spring	3 files	Framework guides and testing
Docker	2 files	Container management
Kubernetes	2 files	Orchestration and clustering
Node.js	3 files	Installation and version management
Unix	1 file	System administration commands
Scripts	5 files	Automation utilities
Config	2 files	Development environment setup

🔍 Quick Reference

Most Used Commands

Git:

# Clean up local branches
git fetch -p && for branch in $(git for-each-ref --format '%(refname) %(upstream:track)' refs/heads | awk '$2 == "[gone]" {sub("refs/heads/", "", $1); print $1}'); do git branch -D $branch; done

Maven:

mvn dependency:tree              # Show dependency hierarchy
mvn dependency:analyze           # Analyze unused dependencies
mvn org.owasp:dependency-check-maven:check  # Security audit

Docker:

docker rmi $(docker images | grep "^<none>" | awk "{print $3}")  # Remove untagged images
docker rm $(docker ps -a -q)     # Remove stopped containers

Node.js:

nvm list-remote                  # List available versions
nvm install <version>            # Install specific version
nvm use <version>                # Switch Node version

📄 License

This documentation is maintained for personal reference and development use.

📧 Contact

For questions or contributions, please open an issue or submit a pull request.

Last Updated: 2026-03-18