1 ms latency is easy with Redis when the database and clients are in the same region. But if you want the clients to be globally distributed then the latency rises over 100 ms. We built Edge Caching to overcome this.
Computing at the Edge is one of the most exciting capabilities in recent years. CDN allows you to keep your files closer to your users. Edge computing allows you to run your applications closer to your users. This helps developers to build globally distributed, performant applications.
Cloudflare Workers is the leading product in this space right now. It gives you a serverless processing environment without cold starts. You leverage Cloudflare's global network to minimize latency of your applications. You can write your functions in Javascript, Rust, C and C++.
Similar to Serverless functions (AWS Lambda etc.), Cloudflare Workers are stateless. As you can see in Cloudflare’s survey, developers are asking ways to connect their databases from Edge functions. Unfortunately, most databases are not designed for serverless environments, they require persistent connections. We developed the REST API over Redis to enable serverless edge functions to access Upstash in the simplest and fastest way possible.