Worker Receiving Request Very Late / Date.now() Incorrect?
I am sending requests to a CF Worker via GitHub Actions. For each of these requests sent via GitHub Actions, there is an
expiry field in its JSON payload that is populated with Date.now() + 60000 (so the request expires 1 minute after it is created and sent). My CF Worker is set up such that if Date.now() > expiry, then the request is rejected. (this is for request signing, implemented very similarly to this example: https://developers.cloudflare.com/workers/examples/signing-requests/)
Sporadically, I notice that the request is rejected via my CF worker due to it expiring, when it shouldn't have been rejected.
Digging into it more, I notice that the CF Worker processes my request more than a minute later than it was sent via GitHub Actions, and I don't understand why.
As an example, a particular request was sent at Mon, 11 Dec 2023 05:02:55 GMT from GitHub Actions to the CF Worker endpoint, but it was picked up by the CF Worker at Mon Dec 11 2023 05:04:05 GMT . This is seen from the "Real-Time Logs" feature within my CF Worker dashboard (and therefore the request is now expired).
after debugging and sleuthing, the only leads so far I have for why this is happening are:
1. CF Workers takes over a minute to cold start and/or to start processing the request - this sounds incredibly unlikely ...
2. Something related to this: https://developers.cloudflare.com/workers/learning/security-model/#step-1-disallow-timers-and-multi-threading
In Workers, you can get the current time using the JavaScript Date API by callingI'm not sure where to go from here and I would appreciate any pointers! This functionality is essential for my app so I would love to have this intermittent behavior figured out 😄Date.now(). However, the time value returned is not the current time.Date.now()returns the time of the last I/O. It does not advance during code execution.
Security model · Cloudflare Workers docs
This article includes an overview of Cloudflare security architecture, and then addresses two frequently asked about issues: V8 bugs and Spectre.
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bump! if anyone has any advice/suggestions on how to address this it would be much appreciated 🙂