SPIKE: Estimate effort needed to apply okapi caching

Main points to address

• getting familiar with OKAPI caching, its purpose and use cases
• review team's modules and collect information about what can be cached
• provide rough estimate to introduce the caching into the modules

Modules to be reviewed

• mod-kb-ebsco-java
• mod-notes
• mod-custom-fields
• mod-tags
• mod-codex-mux
• mod-codex-ekb

Useful:
https://issues.folio.org/browse/OKAPI-770
https://github.com/folio-org/okapi/blob/master/doc/guide.md#okapi-configuration