Eliminating cold starts with Cloudflare Workers

Introduced an optimization to eliminate cold starts for Cloudflare Workers by leveraging TLS handshake SNI information. During the TLS ClientHello, the Workers runtime is now hinted to eagerly load the Worker associated with the hostname. This pre-warming ensures that by the time the handshake is complete, the Worker is already warm and ready to execute code immediately upon request arrival, effectively achieving zero cold start latency. This optimization is available for all Workers customers and is deployed to production for root hostnames.