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NOSQL Database - Coggle Diagram

- - - - field
    - - document
    - - index
    - - implicit
    - - cluster instance
  - - - how those fields should be indexed and stored by Lucene
      - the datatype of each field (e.g., string, integer, or date)
    - - Which string fields should be full text
      - which should be numbers or dates (and in which formats)
      - When should you use the _all field
        
        concatenates multiple fields to a single string
        
        concatenates multiple fields to a single string
    - - Common Types
        
        binary
        
        Base64 string.
        
        Keywords
        
        keyword
        
        stores values optimised for wildcard grep-like queries
        
        IDs
        
        email addresses
        
        status codes
        
        zip codes
        
        wildcard
        
        Numbers
        
        long
        
        double
      - Geo
      - Specialized
    - - Defining too many fields in an index
      - can cause out of memory errors
  - - - Metric
        
        calculate metrics, such as a sum or average, from field values.
      - Bucket
        
        aggregations that group documents into
        
        bins
        
        buckets
        
        based on field values, ranges, or other criteria
      - Pipeline
        
        aggregations that take input from other aggregations
- - - - The number of cities is huge and this will make document size much bigger
        
        unnecessary nested and complex modeling
        
        A vs B — Better Query Performance
      - less nested objects therefor more clarity
        
        A vs B — Better Query Performance