query against Elasticsearch, if configured
query against Elasticsearch, if configured

...with fallbacks to SQL if somethign goes wrong
or is still unimplemented.

There are two major things missing yet:

 - 'select' only a subset of entries
 - all still based on default analyzers, needs tweaking;
   (this would probably help with pathological edge cases
   like metric NAMEs containing punctuation which do not
   yet work when searched with 'like')

benchmarkanything/BenchmarkAnything-Storage-Backend-SQL