Update store documentation

**Feature request**
It would be great to have retry for middleware.

**Use case**
Many users need this functionality for production deployments.

**Implementation idea**
Add a new config option `enable_retry` with default `false`.

The issue names no files, tests, or entry points. Start by locating where middleware configuration is defined; done means a disabled-by-default enable_retry option exists and retry behavior is covered for production deployment use.

Written by the indexing model from the issue text.