Document request size limits for Workers

[danielcompton]

Expected Behavior

https://developers.cloudflare.com/workers/platform/limits includes documentation about the maximum size of an HTTP request to Workers (e.g. 30MB, 500MB, unlimited).

Actual Behavior

There is no documentation explaining what the maximum size for a request can be.

Section that requires update

https://developers.cloudflare.com/workers/platform/limits#worker-limits

Additional information

Google App Engine documents the max request and response size.

[Mooshua]

Trial-and-error on my own worker indicates that, for a paid account, the limit is above 100 MB and below 200 MB. I don't have the hard numbers and don't know where to find them, but I'll have more time to bounce files around later.

Good luck with this.

[Mooshua]

Alright, both free and paid workers throw 413's (Request entity too large) above 100 MB, with an error margin of 1 MB. I'll make a pr declaring 100 MB as the maximum body size in the limits chart :^)

Request size is limited by your cloudflare plan (100MB for Free/Pro, 200MB for Business, 500MB+ for enterprise.

[kristianfreeman]

Alright, both free and paid workers throw 413's (Request entity too large) above 100 MB, with an error margin of 1 MB. I'll make a pr declaring 100 MB as the maximum body size in the limits chart :^)

Request size is limited by your cloudflare plan (100MB for Free/Pro, 200MB for Business, 500MB+ for enterprise.

where did you get this info from?

[Mooshua]

Information from here https://support.cloudflare.com/hc/en-us/articles/200172516-Understanding-Cloudflare-s-CDN

Reasoning is: If Pages runs after entry to the CDN, and tested upload limits match the CDN's, then the cloudflare CDN should set the upload limit. I also noticed the response for POSTs that were too big (413) responded 3-10x quicker than a 200 response which reaches the worker, indicating that Cloudflare's gateway and not the workers server rejected this request. Unsure of internal limits the workers server may impose, but this should be a good start.

[kristianfreeman]

Information from here https://support.cloudflare.com/hc/en-us/articles/200172516-Understanding-Cloudflare-s-CDN

Reasoning is: If Pages runs after entry to the CDN, and tested upload limits match the CDN's, then the cloudflare CDN should set the upload limit. I also noticed the response for POSTs that were too big (413) responded 3-10x quicker than a 200 response which reaches the worker, indicating that Cloudflare's gateway and not the workers server rejected this request. Unsure of internal limits the workers server may impose, but this should be a good start.

sounds good! remember to rebase :) #1372 (comment)