[Identity] Adjust IMDS retry backoff (#35070)

This better aligns with other languages. Signed-off-by: Paul Van Eck <paulvaneck@microsoft.com>

Author: pvaneck

sdk/identity/azure-identity/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 1.16.0b3 (Unreleased)
+## 1.16.0 (Unreleased)
 
 ### Features Added
 
@@ -10,6 +10,8 @@
 
 ### Other Changes
 
+- For IMDS requests in `ManagedIdentityCredential`, the retry backoff factor was reduced from 2 to 0.8 in order to avoid excessive retry delays and improve responsiveness. Users can customize this setting with the `retry_backoff_factor` parameter: `ManagedIdentityCredential(retry_backoff_factor=2)`. ([#35070](https://github.com/Azure/azure-sdk-for-python/pull/35070))
+
 ## 1.16.0b2 (2024-03-05)
 
 ### Features Added

sdk/identity/azure-identity/azure/identity/_credentials/imds.py

@@ -21,7 +21,8 @@
 
 PIPELINE_SETTINGS = {
  "connection_timeout": 2,
- "retry_backoff_factor": 2,
+ # Five retries, with each retry sleeping for [0.0s, 1.6s, 3.2s, 6.4s, 12.8s] between attempts.
+ "retry_backoff_factor": 0.8,
  "retry_backoff_max": 60,
  "retry_on_status_codes": [404, 410, 429] + list(range(500, 600)),
  "retry_status": 5,

sdk/identity/azure-identity/azure/identity/_version.py

@@ -2,4 +2,4 @@
 # Copyright (c) Microsoft Corporation.
 # Licensed under the MIT License.
 # ------------------------------------
-VERSION = "1.16.0b3"
+VERSION = "1.16.0"

sdk/identity/azure-identity/setup.py

@@ -38,7 +38,7 @@
  url="https://github.com/Azure/azure-sdk-for-python/tree/main/sdk/identity/azure-identity",
  keywords="azure, azure sdk",
  classifiers=[
- "Development Status :: 4 - Beta",
+ "Development Status :: 5 - Production/Stable",
  "Programming Language :: Python",
  "Programming Language :: Python :: 3 :: Only",
  "Programming Language :: Python :: 3",