D1 + R2 + KV: The $0/Month Full-Stack Architecture

Building a production-grade, globally distributed application used to require a massive AWS or GCP bill. Today, you can build and scale complex apps for virtually $0 using the Cloudflare Developer Platform.

The Essential Suite of Edge Storage

1. Cloudflare D1: A globally distributed SQL database based on SQLite. It's perfect for relational data like user profiles, blog posts, and transactional records.
2. Cloudflare R2: S3-compatible object storage with zero egress fees. This is a massive cost saver for hosting user uploads, images, and video files.
3. Cloudflare KV: An ultra-low latency key-value store. It's ideal for high-read data like configuration flags, session management, and API caching.

Why this Stack?

By combining these three primitives with Next.js on Cloudflare Pages, you create an architecture that is not only cost-effective but also extremely fast. Since your compute (Workers) and your data (D1/R2/KV) live on the same global network, you eliminate the "hop" latency found in traditional multi-cloud setups.