Add a caching layer to FHIR requests #387
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Description of what I changed
This is an initial step at caching the transformation from OpenMRS data -> FHIR data. The idea is that for certain queries we will essentially reproduce, e.g., the same data extract from the concept for each observation, etc., and that we can speed up these operations by simply caching the results of that transformation.
Cache invalidation is a very hard problem and this approach may not solve it successfully. The other alternative is to essentially have a cache-per-request, but I thought we'd start from a single cache
Issue I worked on
Checklist: I completed these to help reviewers :)
My IDE is configured to follow the code style of this project.
No? Unsure? -> configure your IDE, format the code and add the changes with
git add . && git commit --amendI have added tests to cover my changes. (If you refactored
existing code that was well tested you do not have to add tests)
No? -> write tests and add them to this commit
git add . && git commit --amendI ran
mvn clean packageright before creating this pull request andadded all formatting changes to my commit.
No? -> execute above command
All new and existing tests passed.
No? -> figure out why and add the fix to your commit. It is your responsibility to make sure your code works.
My pull request is based on the latest changes of the master branch.
No? Unsure? -> execute command
git pull --rebase upstream master