Azure Throttling Walkthrough

gistfile1.txt

# Intro

Two types of rate limiting you might see:
- Subscription
- Resource Provider (Storage, Network Compute)

See current throttling status by looking at response headers.

Example:
* x-ms-ratelimit-remaining-resource
* x-ms-ratelimit-remaining-subscription-reads

# Read Request for VMSS

```
➜  az vmss show -n $VMSS_NAME -g $RG --debug 2>&1 | grep x-ms
DEBUG: cli.azure.cli.core.sdk.policies:     'x-ms-client-request-id': '<GUID>'
DEBUG: cli.azure.cli.core.sdk.policies:     'x-ms-ratelimit-remaining-resource': 'Microsoft.Compute/GetVMScaleSet3Min;197,Microsoft.Compute/GetVMScaleSet30Min;1297'
DEBUG: cli.azure.cli.core.sdk.policies:     'x-ms-request-id': '<GUID>'
DEBUG: cli.azure.cli.core.sdk.policies:     'x-ms-ratelimit-remaining-subscription-reads': '11999'
DEBUG: cli.azure.cli.core.sdk.policies:     'x-ms-correlation-request-id': '<GUID>'
DEBUG: cli.azure.cli.core.sdk.policies:     'x-ms-routing-request-id': 'SOUTHCENTRALUS:20230512T162738Z:<GUID>'
```

# Write Request

```
➜  ~ az group create -n myresourcegroup --location westus --verbose --debug --debug 2>&1 | grep 'x-ms'

DEBUG: cli.azure.cli.core.sdk.policies:     'x-ms-client-request-id': '<GUID>'
DEBUG: cli.azure.cli.core.sdk.policies:     'x-ms-ratelimit-remaining-subscription-writes': '1199'
DEBUG: cli.azure.cli.core.sdk.policies:     'x-ms-request-id': '<GUID>'
DEBUG: cli.azure.cli.core.sdk.policies:     'x-ms-correlation-request-id': '<GUID>'
DEBUG: cli.azure.cli.core.sdk.policies:     'x-ms-routing-request-id': 'SOUTHCENTRALUS:20230512T163152Z:<GUID>'
```

# Reference

https://learn.microsoft.com/en-us/azure/azure-resource-manager/management/request-limits-and-throttling
https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-machines/troubleshooting-throttling-errors