Serverless Architecture at the Edge: Cloudflare Workers & D1

Distributing computation to the network edge brings application logic within milliseconds of end users worldwide.

Cloudflare Workers combined with D1 serverless SQLite database and R2 storage provides an unmatched serverless platform for building high-concurrency web applications.

Edge Stack Architecture

• Workers Runtime: V8 isolated execution environment delivering sub-10ms global response times with zero cold start penalty.
• D1 SQLite Database: Serverless SQL database replicating data seamlessly across global edge PoPs.
• R2 Storage: S3-compatible object storage with zero egress fee penalties.

// Edge Worker API Handler
export default {
  async fetch(request, env) {
    const { results } = await env.DB.prepare(
      "SELECT * FROM metrics ORDER BY timestamp DESC LIMIT 10"
    ).all();
    return Response.json(results);
  }
};