Limits and Instance Types

Instance Types

The memory, vCPU, and disk space for Containers are set through predefined instance types. Six instance types are currently available:

Instance Type	vCPU	Memory	Disk
lite	1/16	256 MiB	2 GB
basic	1/4	1 GiB	4 GB
standard-1	1/2	4 GiB	8 GB
standard-2	1	6 GiB	12 GB
standard-3	2	8 GiB	16 GB
standard-4	4	12 GiB	20 GB

These are specified using the instance_type property in your Worker's Wrangler configuration file.

Note

The dev and standard instance types are preserved for backward compatibility and are aliases for lite and standard-1, respectively.

Custom Instance Types

In addition to the predefined instance types, you can configure custom instance types by specifying vcpu, memory_mib, and disk_mb values. See the Wrangler configuration documentation for configuration details.

Custom instance types have the following constraints:

Resource	Limit
Minimum vCPU	1
Maximum vCPU	4
Maximum Memory	12 GiB
Maximum Disk	20 GB
Memory to vCPU ratio	Minimum 3 GiB memory per vCPU
Disk to Memory ratio	Maximum 2 GB disk per 1 GiB memory

For workloads requiring less than 1 vCPU, use the predefined instance types such as lite or basic.

Looking for larger instances? Give us feedback here and tell us what size instances you need, and what you want to use them for.

Limits

While in open beta, the following limits are currently in effect:

Feature	Workers Paid
GiB Memory for all concurrent live Container instances	400GiB
vCPU for all concurrent live Container instances	100
TB Disk for all concurrent live Container instances	2TB
Image size	Same as instance disk space
Total image storage per account	50 GB 1

Footnotes

1. Delete container images with wrangler containers delete to free up space. Note that if you delete a container image and then roll back your Worker to a previous version, this version may no longer work. ↩