Cloudflare Workers

Development

Definitions

  1. A serverless execution environment that runs JavaScript, TypeScript, and WebAssembly at Cloudflare's global network edge, within milliseconds of end users. Workers deploy to over 300 data centers worldwide and start executing in under 5 milliseconds, making them one of the fastest serverless platforms available. The platform includes Workers KV (key-value storage), Durable Objects (stateful coordination), R2 (S3-compatible object storage), D1 (SQLite at the edge), and Queues. Workers use the V8 isolate model rather than containers, enabling near-zero cold starts. The ecosystem has grown into a comprehensive edge computing platform that lets developers build entire applications without traditional servers, competing directly with AWS Lambda and traditional backend architectures.

    In plain English: Cloudflare's platform for running small pieces of code at hundreds of data centers around the world, right next to your users. Your code starts almost instantly and runs globally by default.

    Example: Our auth middleware runs as a Cloudflare Worker. It validates tokens at the edge before requests even reach our origin server.