Learn FASTLY-COMPUTE-EDGE with Real Code Examples

Accelerate high-traffic websites and apps

Implement personalization and A/B testing

Enhance security and compliance via edge rules

Reduce origin server cost by caching at edge

Optimize API response delivery for SaaS products

Expanded language and runtime support

Enhanced debugging and local simulation tools

Improved observability and logging features

More advanced routing and cache orchestration

Better integration with third-party APIs and CDNs

Long-running backend jobs

Applications requiring persistent storage

Heavy computational tasks exceeding Wasm limits

Projects outside web/CDN delivery context

Non-HTTP or non-CDN-driven workloads

Fastly Compute@Edge is a serverless edge computing platform.

Enables low-latency execution close to users via Fastly’s CDN.

Supports WebAssembly runtimes for multiple languages.

Ideal for personalization, caching, security, and dynamic content generation.

Globally distributed, scalable, and integrated with Fastly’s edge services.

Is Compute@Edge free?

Fastly offers free trial credits, then pay-per-use based on requests and bandwidth

What languages are supported?

Rust, AssemblyScript, C, and other WebAssembly-compatible languages

Does it scale automatically?

Yes - deployed globally at Fastly edge locations

Can I access a database from edge?

Yes, but latency may increase; best for caching or API aggregation

How long can a function run?

Execution limits depend on Fastly's Wasm runtime constraints, typically short-lived