Efficient way to read key-value pairs for frequent lookups

I'm storing a few properties(KV pairs) in a hierarchical db(JCR). As part of business logic, i have to lookup these key-value pairs very frequently and each time i have to call a method which goes and retrieves the persisted value.

I'm working on a CMS called AEM and all these key-value pairs are authored using a component and stored as JCR properties. Presently i've written an OSGi service which will go to that node and retrieve the value corresponding to the key and this method gets invoked several several times. Instead of making repeated calls to the service method to retrieve these values, can you suggest an efficient way to do this?