We have a stanza called accelerate fields that can be added to collections.conf. Accelerations are similar to database indexes on fields in that they help quickly locate data without having to search every event in a collection each time a search is run. You can create accelerations for one or more fields in a collection. However, accelerations slightly decrease insert performance and they impact disk space.
To accelerate a field, define the acceleration using the following setting in the collection's stanza:
[kvstorecoll]
accelerated_fields.my_accel = {"id": 1}
The example shows the definition of a "my_accel" acceleration for the "id" field sorted in ascending order in collections.conf.
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