This version introduces a new environment variable (POOL_SIZE_URLLIB3) which can be used the configure the urllib3 connection pool size.
The value of this variable can be set in the range [10,100]. this value defaults to 10 in any other case. To use this feature, version number in requirements.txt should be such that v1.1.9 or above is picked up. (valid examples: appengine-python-standard>=1.0 or appengine-python-standard==1.1.9)
Example app.yaml file:
runtime: python39
app_engine_apis: true
env_variables:
POOL_SIZE_URLLIB3: 50