Limits
Script limits
Cloudflare provides an unlimited number of scripts for Workers for Platforms customers.
cf object
The cf object contains Cloudflare-specific properties of a request. This field is not accessible in user Workers because some fields in this object are sensitive and can be used to manipulate Cloudflare features (eg.cacheKey, resolveOverride, scrapeShield.)
Cache API
For isolation, caches.default() is disabled for namespaced scripts. To learn more about the cache, refer to How the cache Works.
Tags
You can set a maximum of eight tags per script. Avoid special characters like , and & when naming your tag.
Gradual Deployments
Gradual Deployments is not supported yet for user Workers. Changes made to user Workers create a new version that deployed all-at-once to 100% of traffic.
API Rate Limits
The global rate limit for the Cloudflare API is 1200 requests per five minutes per user, and applies cumulatively regardless of whether the request is made via the dashboard, API key, or API token.
If you exceed this limit, all API calls for the next five minutes will be blocked, receiving a HTTP 429 response.
Some specific API calls have their own limits and are documented separately, such as the following:
Enterprise customers can also contact Cloudflare Support to raise the limit to a higher value.