Improve caching on Catalog top level facets

[btylerburton]

User Story

In order to provide a better user experience, datagovteam wants to reduce load time for search facets.

Acceptance Criteria

[ACs should be clearly demoable/verifiable whenever possible. Try specifying them using BDD.]

• GIVEN I click on a top-level facet
  THEN I expect that faceted search to load in 250ms or less

Background

[Any helpful contextual notes or links to artifacts/evidence, if needed]

Security Considerations (required)

[Any security concerns that might be implicated in the change. "None" is OK, just be explicit here!]

Sketch

• Investigate and implement cache-priming/warming using New Relic or another alternative