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Update db_indexes.md #624

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Oct 19, 2023
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Update db_indexes.md #624

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Update db_indexes.md
AlvaroVega Oct 19, 2023
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update doc with table
AlvaroVega Oct 19, 2023
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17 changes: 17 additions & 0 deletions doc/manuals/db_indexes.md
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Expand Up @@ -16,6 +16,15 @@ It is recommended to create the following index in this collection:
The performance difference can be dramatic for large sets of data. For instance, for a collection with around ~3000000
query execution time can drop from 3 seconds to 1 millisecond.

Since version 3.0.0 of cygnus an index named `cyg_raw_opt` is created in this way but depending on datamodel:

| datamodel | keys |
| :-------------- | :--------------------------------------------------------------- |
| DMBYSERVICEPATH | recvTime, entityId, entityType, attrName, attrType, attrValue |
| DMBYENTITY | recvTime, attrName, attrType, attrValue |
| DMBYATTRIBUTE | recvTime, attrType, attrValue |


## Indexes in the aggregated data collection

It is recommended to create the following index in this collection:
Expand All @@ -26,3 +35,11 @@ It is recommended to create the following index in this collection:

The performance difference can be dramatic for large sets of data. For instance, for a collection with around ~6000000
query execution time can drop from 28 seconds to 20 millisecond.

Since version 3.0.0 of cygnus index named `cyg_agg_opt` is created in this way but depending on datamodel:

| datamodel | keys |
| :--------------- | :------------------------------------------------- |
| DMBYSERVICEPATH | entityId, entityType, attrName, resolution, origin |
| DMBYENTITY | attrName, resolution, origin |
| DMBYATTRIBUTE | resolution, origin |
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