Data Population

  • ElasticSearch is best as a secondary store
  • Bulk Api is a must for most applications
  • Payload for bulk load is a bit less than self-explanatory
  • It is json but it is not proper json, first line is meta-data and second line is Json data
  • The json on each line must be on one line, between two lines '\n' character is expected
  • '\n' character is expected after last line as well
  • Example using curl requires creating a file with not-so-json payload: 'request' first:
    echo '{ "index" : { "_index" : "ordering", "_type" : "order", "_id" : "1" }}
    { "id" : "1", "placedOn": "2016-10-17T13:03:30.830Z" }
    ' > request
    
  • Posting request data requires --data-binary switch to instruct curl to post the data as is
    curl -s -XPOST localhost:9200/_bulk -H 'content-type: application/json' --data-binary "@request"
    

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