Elasticsearch notes

1. Use marvel like a scratchpad for trying out GET/POST/PUT etc

2. PUT needs an id, POST generates one

3. ES auto generates field type mapping, can be overridden

4. Analyzers : whitespace, camelCase,regexp, Hindi etc

5. boost a field

6. search queries can be very structured, AND, OR of multiple fields

7. index is divided into shards. each shard can have replicas.

8. document routing - which document goes to which shard

9. prefix search, range search, 

10. filter query : doesn't compute score hence fast

11. match query computes score, so slow

Questions:

1. http://stackoverflow.com/questions/33065067/elasticsearch-distance-search-across-types

2.