Portfolio website of Rahul Ravindran, software engineer, writer, and product-focused developer. # Primary Sections ## Home: https://rahulr.cc FullStack Engineer specializing in Next.js, React, TypeScript, DevOps, and AI workflows. Sharing technical articles, real-world case studies, scalable systems, and product engineering insights. ## Blog: https://rahulr.cc/blogs Collection of technical writing covering Next.js, React, TypeScript, Docker, DevOps, AI engineering, system architecture, performance optimization, and software development practices. ## Case Studies: https://rahulr.cc/cs Technical case studies covering software architecture, product engineering, DevOps, analytics pipelines, AI integrations, developer tooling, scalability challenges, infrastructure automation, and measurable business impact. ## RSS Feed https://rahulr.cc/rss.xml ## Sitemap https://rahulr.cc/sitemap.xml ## Compressed LLMS version https://rahulr.cc/llms.txt # Content ## Blog Sections Title: Cloudflare Tunnel Advanced Guide: Docker, Zero Trust and HA Setup URL: https://rahulr.cc/blogs/cloudflare-tunnel-advanced-guide-docker-zero-trust-and-ha-setup Description: Learn advanced Cloudflare Tunnel configurations with Docker, ingress routing, Zero Trust Access, high availability, and production-ready deployments. Title: Secure Any Self-Hosted App with Cloudflare Access URL: https://rahulr.cc/blogs/secure-any-self-hosted-app-with-cloudflare-access Description: Use Cloudflare Access and One-Time PIN login to protect internal apps, admin panels, and dashboards from public access. Title: Cloudflare Tunnel on Multiple VPSes: HA, Scaling, and Pitfalls URL: https://rahulr.cc/blogs/cloudflare-tunnel-on-multiple-vpses-ha-scaling-and-pitfalls Description: Can Cloudflare Tunnel provide high availability or load balancing across multiple VPSes? Learn how connectors work, common deployment mistakes, and the best production architecture for self-hosted applications. Title: Managing Multiple Services with Cloudflare Local Tunneling URL: https://rahulr.cc/blogs/managing-multiple-services-with-cloudflare-local-tunneling Description: Learn how to expose multiple local apps with a single Cloudflare Tunnel. Configure DNS, ingress rules, HTTPS, and secure access without port forwarding Title: Docker Networking in Depth: Build Secure and Scalable Container Networks URL: https://rahulr.cc/blogs/docker-networking-in-depth-build-secure-and-scalable-container-networks Description: Learn Docker networking: bridge, host, overlay, macvlan, and none drivers for secure, scalable container communication and troubleshooting. Title: An In-Depth Guide to Dockerfiles: From Basics to Production Optimization URL: https://rahulr.cc/blogs/an-in-depth-guide-to-dockerfiles-from-basics-to-production-optimization Description: Learn how to write, optimize, and secure Dockerfiles for Node.js and Express apps with caching, multi-stage builds, and best practices Title: A Developer’s Guide to Container Sanity Without the Therapy Bills URL: https://rahulr.cc/blogs/a-developers-guide-to-container-sanity-without-the-therapy-bills Description: Docker has revolutionized the way we build, ship, and run applications. It promises “it works on my machine” bliss across environments, but let’s face it, without some solid practices, managing Docker containers can go from elegant orchestration to chaotic container carnage. Title: Setting up ngrok for Webhook testing URL: https://rahulr.cc/blogs/setting-up-ngrok-for-webhook-testing Description: Learn how to set up Ngrok and SendGrid Event Webhooks to test email delivery, open, click, and bounce events on your local development environment. This step-by-step guide covers installation, configuration, secure tunneling, webhook endpoint setup, request monitoring, and debugging before deploying your application to production. Title: Docker Demystified: A Deep Dive into Container Realm URL: https://rahulr.cc/blogs/docker-demystified Description: If you've ever had your software perfectly working on your computer, only for it to fail spectacularly when deployed elsewhere (usually in front of your boss) “Welcome to the club!” You're officially a victim of the infamous "it works on my machine" syndrome. But don't fret; Docker is here to rescue your dignity and revolutionize how your code travels from your cozy laptop to production servers without drama. Title: Advanced Prompting Methods: Prompt Tuning and Prompt Injection URL: https://rahulr.cc/blogs/advanced-prompt-engineering-techniques Description: Advanced prompting methods, prompt tuning & prompt injection go beyond just crafting clever system prompts, they bring in deeper techniques for customizing, optimizing adn protecting AI systems Title: Mastering Prompt Engineering Techniques URL: https://rahulr.cc/blogs/mastering-prompt-engineering Description: Prompt Engineering has rapidly emerged as a key skill for harnessing the power of Artificial Intelligence (AI) tools, specifically Large Language Models (LLMs) such as GPT-4 and ChatGPT. Prompt Engineering involves creating instructions (prompts) that effectively guide AI models toward desired outputs. Title: Setting up Redux Toolkit w/ React JS URL: https://rahulr.cc/blogs/setting-up-redux-toolkit-with-reactjs Description: Learn how to set up Redux Toolkit in a ReactJS app using Vite. This beginner-friendly guide covers slices, reducers, store configuration, multiple slices, and practical examples to help you build scalable React applications faster. Title: Async API calls w/ Redux Toolkit URL: https://rahulr.cc/blogs/async-api-calls-with-redux-toolkit Description: Learn how to make async API calls in Redux Toolkit using createAsyncThunk. This guide covers lifecycle actions, extraReducers, ImmerJS patterns, error handling with rejectWithValue, and best practices for managing API state in React apps. ## Case Studies Section Title: Smart Lead Management with Building Bubbles URL: https://rahulr.cc/cs/whatsapp-crm Description: An in-house WhatsApp CRM that replaced costly third-party tools, cut acquisition cost per student by 20%, and boosted reply speed by 35%. All while giving the team full control over data and workflows. Title: Scaling Google Docs Delivery for 500+ Students Without Premium APIs URL: https://rahulr.cc/cs/scaling-workshop Description: A workshop system that used Google Drive started failing under scale. I rebuilt it to be resilient, latency-free, and quota-safe, all without buying a Google Workspace subscription. Title: Bootstrapping a Real-Time Analytics Pipeline Without Breaking the Bank URL: https://rahulr.cc/cs/custom-etl Description: How I built a custom Express.js + BigQuery data sync system to power investor-ready dashboards, saving ~$700/month in ETL costs and turning raw LMS data into live visual insights. ## Series Section Title: Mastering Docker: From Containers to Production Deployments URL: https://rahulr.cc/series/docker Description: Learn Docker fundamentals, networking, volumes, Compose, security, and production-ready deployment strategies Title: Mastering Cloudflare: From DNS to Zero Trust and Beyond URL: https://rahulr.cc/series/mastering-cloudflare Description: Explore Cloudflare's ecosystem through practical tutorials covering DNS, Tunnels, Workers, Pages, R2, Zero Trust, security, networking, and modern web infrastructure Title: Redux Toolkit for Beginners URL: https://rahulr.cc/series/redux-toolkit Description: This is a beginner-friendly series, where we will learn the basic concepts of Redux Toolkit. At the end of this series, you will be able to get started with that one project you always wanted to start