Goroutines & Channels: Concurrent Scraping the Go Way

What makes goroutines cheaper than OS threads for high-throughput crawling?

• AGoroutines skip the kernel entirely
• BA goroutine starts with a small stack (a few KB) that grows on demand, vs OS threads which are MB-class; one Go process can run hundreds of thousands of goroutines
• CGoroutines run on dedicated hardware
• DGoroutines compile to Wasm