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| Metric | Cloudflare Workers | Firecracker | AWS Lambda | Node.js |
|---|---|---|---|---|
| Score | B+75 | B70 | B-65 | B-65 |
| Type | Edge | MicroVM | Serverless | Language |
| Execution | jit | aot | hybrid | jit |
| Interface | platform | api | platform | cli |
| Cold Start | <1ms | 125ms | 200ms | 50ms |
| Memory | 128MB | 5MB | 128MB | 40MB |
| Startup | <1ms | 100ms | 100ms | 20ms |
| Isolation | process | microvm | microvm | process |
| Maturity | production | production | production | production |
| Languages | JavaScript, TypeScript, Rust, C, C++ | Any | JavaScript, TypeScript, Python, Java, Go, Ruby, .NET, Rust | JavaScript, TypeScript |
| License | Proprietary | Apache-2.0 | Proprietary | MIT |
| Links |