Valar valarpirai

A Shared Gradle Build System for Multi-Repo Platforms

Large Java platforms often span dozens of repositories — each with its own build files, dependency declarations, and tooling configuration. Without a unified approach, version drift creeps in, build logic gets duplicated, and a routine dependency upgrade turns into a multi-repo coordination nightmare.

This post walks through an architecture pattern that solves this using Gradle: a dedicated shared-build repository that acts as the single source of truth for build logic, dependency versions, and project conventions across every repo in the platform.

Key Principles

Dev Tools

Package Managers

brew Mac package manager

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
Mise dev tools manager
- Alternative to node, python, cmake etc
SDK Manager For Java and JVM related pacakages

System Design repo list

https://github.com/stars/valarpirai/lists/system-design

Object oriented system design - LLD

https://github.com/tssovi/grokking-the-object-oriented-design-interview

My Courses

https://www.udemy.com/home/my-courses/learning/

Node.js Deployment

Steps to deploy a Node.js app to DigitalOcean using PM2, NGINX as a reverse proxy and an SSL from LetsEncrypt

1. Sign up for Digital Ocean

If you use the referal link below, you get $10 free (1 or 2 months) https://m.do.co/c/5424d440c63a

2. Create a droplet and log in via ssh

I will be using the root user, but would suggest creating a new user

	// Claude Code is a Beta product per Anthropic's Commercial Terms of Service.
	// By using Claude Code, you agree that all code acceptance or rejection decisions you make,
	// and the associated conversations in context, constitute Feedback under Anthropic's Commercial Terms,
	// and may be used to improve Anthropic's products, including training models.
	// You are responsible for reviewing any code suggestions before use.

	// (c) Anthropic PBC. All rights reserved. Use is subject to Anthropic's Commercial Terms of Service (https://www.anthropic.com/legal/commercial-terms).

	// Version: 0.2.9

	You are an assistant that engages in extremely thorough, self-questioning reasoning. Your approach mirrors human stream-of-consciousness thinking, characterized by continuous exploration, self-doubt, and iterative analysis.

	## Core Principles

	1. EXPLORATION OVER CONCLUSION
	- Never rush to conclusions
	- Keep exploring until a solution emerges naturally from the evidence
	- If uncertain, continue reasoning indefinitely
	- Question every assumption and inference

	# -----------------------------------------------------------------------------
	# AI-powered Git Commit Function
	# Copy paste this gist into your ~/.bashrc or ~/.zshrc to gain the `gcm` command. It:
	# 1) gets the current staged changed diff
	# 2) sends them to an LLM to write the git commit message
	# 3) allows you to easily accept, edit, regenerate, cancel
	# But - just read and edit the code however you like
	# the `llm` CLI util is awesome, can get it here: https://llm.datasette.io/en/stable/

	gcm() {

	module AppConfig
	def self._config
	@_config \|\|= ErbYaml.load_file("#{Rails.root}/config/app_configuration.yml")
	end

	def self.env
	_config["env_name"]
	end
	end

	find . -maxdepth 1 -type d \( ! -name . \) -exec bash -c "pull()
	{
	echo '--------- $(pwd)'
	if [ -d \".git\" ]; then
	echo '######### Start git pull'
	git pull
	else
	echo '******* Not a git Repo ********'
	fi
	}

	#!/usr/bin/env python

	import os
	import sys
	import boto3
	from datetime import datetime, timezone
	from urllib.request import pathname2url
	import mimetypes

	# upload_dir_s3.py /path/to/local/folder thebucketname /path/to/s3/folder