OpenWorkers Runtime V8

V8-based JavaScript runtime for serverless workers, built on rusty_v8.

Quick Start

use openworkers_runtime_v8::{init_pool, execute_pooled, RuntimeLimits, Script, Task};

// Initialize pool once at startup
init_pool(1000, RuntimeLimits::default());

// Execute workers
let script = Script::new(r#"
    addEventListener('fetch', event => {
        event.respondWith(new Response('Hello!'));
    });
"#);

execute_pooled("worker-id", script, ops, task).await?;

Features

• Isolate pooling — <10µs warm start, ~100µs cold start
• Streaming — ReadableStream with backpressure
• Web APIs — fetch, setTimeout, Response, Request, URL, console
• Async/await — Full Promise support

Performance

Mode	Cold Start	Warm Start
IsolatePool	~100µs	<10µs
Worker	~2-3ms	~2-3ms

Documentation

• Architecture — System overview
• Execution Modes — Pool vs Worker vs SharedIsolate
• Isolate Pool — Pool implementation details
• Streams — Streaming architecture

Development Setup

This crate uses openworkers-v8, a fork of rusty_v8 with Locker/UnenteredIsolate support for isolate pooling. V8 binaries are downloaded automatically during build.

Testing

# From openworkers-runner (not this crate directly)
cargo test --features v8

License

MIT