Optimize components for large datasets

**Feature request**
It would be great to have encryption for auth.

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

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

The title asks about optimizing components for large datasets, while the body requests encryption for auth, so clarify the intended scope first. No files, tests, or entry points are named; inspect the configuration and authentication entry points once the requirements for encryption and the default behavior are defined.

Written by the indexing model from the issue text.