Resource tier limitations

These limitations are unique for each resource tier. There are currently two resource tiers available, Dynamic Compute and Basic Compute.

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The limits for the EdgeWorker IDs created without a resource tier will not change. By default, these EdgeWorkers functions will execute using Dynamic Compute. The Dynamic Compute limits are the same as the limits applied prior to the introduction of resource tiers.


Event handler	Description	Basic Compute	Dynamic Compute
all event handlers	Maximum CPU time during initialization	60 milliseconds	60 milliseconds
all event handlers	Maximum wall time during initialization	200 milliseconds	500 milliseconds
onClientRequest onOriginRequest onOriginResponse onClientResponse	Maximum memory usage per event handler	1.5 MB	2.5 MB
	Maximum CPU time per event handler	10 milliseconds	20 milliseconds
	Maximum wall time per event handler	4 seconds	5.5 seconds
	Maximum number of HTTP sub-requests allowed from a parent request, per event handler Note: You can use content fetched using the onClientRequest event handler to modify the original end-user request's cache key. For cache keys modified in this way, you need to use purge by CP Code and not by URL. For instructions on how to purge a CP code see Purge Content by CP code. For instructions on how to create a CP code see Create a CP code.	2	4
	Maximum number of HTTP sub-requests allowed in parallel per request	2	4
	Maximum wall time per HTTP sub-request	4 seconds	5.5 seconds
	Maximum response size per HTTP sub-request	5 MB	5 MB
responseProvider	Maximum memory usage for responseProvider	2 MB	4 MB
	Maximum CPU time for responseProvider	100 milliseconds	200 milliseconds
	Maximum wall time for responseProvider	4 seconds	8 seconds
	Maximum number of HTTP sub-requests allowed for responseProvider	50	50
	Maximum number of HTTP sub-requests allowed in parallel for responseProvider	5	5
	Maximum wall time per HTTP sub-request during the execution of the responseProvider event handler	4 seconds	8 seconds
	Maximum response size per HTTP sub-request during the execution of the responseProvider event handler	5 MB	5 MB