New tools for production safety — Gradual deployments, Source maps, Rate Limiting, and new SDKs

This post introduces a new Rate Limiting API that can be directly accessed from Cloudflare Workers at runtime. Previously, rate limiting was primarily configured via the dashboard or API. This new API allows for dynamic enforcement of rate limits, enabling more granular control based on application needs, customer tiers, and specific scenarios. It is backed by memcached for speed and is designed to be easily integrated into Workers. This significantly enhances the flexibility and power of Cloudflare's rate limiting capabilities, moving beyond static configurations to dynamic, code-driven enforcement.