NIMBUS-712 :: Improve startup time

[kropptrevor]

Description

After implementing caching for the EventHandlerConfigFactory, startup time was significantly reduced (in my case from ~120s to ~40s).

Overview of Changes

• Added caching to EventHandlerConfigFactory

Type of Change

• [X] New feature
• [ ] Bug fix
• [ ] Refactor/Technical Debt
• [ ] Documentation Update
• [ ] Test case change
• [ ] This change requires a documentation update
• [ ] Other

Test Details

N/A

Additional Notes

N/A

[openanthem-admin]

You did it @kropptrevor!

Thank you for signing the Anthem Opensource Software CLA.