Elasticsearch for dummies Jakub Kluvnek - - PowerPoint PPT Presentation

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Elasticsearch for dummies Jakub Kluvnek - - PowerPoint PPT Presentation

May 05, 2023 325 likes •653 views

Elasticsearch for dummies Jakub Kluvnek jakub.kluvanek@biddingfox.com @kluvi, @biddingfox_devs WTF database RESTful search and analytics engine APIs Index API Bulk API Get API Reindex API Delete API Multi

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Jakub Kluvánek jakub.kluvanek@biddingfox.com @kluvi, @biddingfox_devs

Elasticsearch for dummies

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WTF

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database

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RESTful search and analytics engine

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APIs

  • Bulk API
  • Reindex API
  • Multi termvectors

API

  • ...
  • Index API
  • Get API
  • Delete API
  • Delete by query API
  • Update API
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rows documents

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Parts

  • cluster
  • node
  • index
  • mapping
  • shard
  • segment
  • document
  • field
  • subfield
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denormalize everything

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realtime NRT

https://www.elastic.co/guide/en/elasticsearch/reference/current/_basic_concepts.html#_near_realtime_nrt

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Data loss

  • index-time (queues)
  • failed shard
  • duplicity
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index allocation

https://www.elastic.co/guide/en/elasticsearch/reference/current/shard-allocation-filtering.html

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Mapping

  • text, keyword
  • long, integer, short, byte, double, float,

half_float, scaled_float

  • date
  • boolean
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Mapping

  • binary
  • integer_range, float_range,...
  • object, array, nested
  • geo_point, geo_shape
  • ...

https://www.elastic.co/guide/en/elasticsearch/reference/current/mapping-types.html

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Mapping update

  • multi-index
  • reindex
  • update
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Search API

  • query/filter
  • match
  • bool
  • term
  • range
  • exists
  • ids

https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl.html

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Aggregations

  • metrics (sum, max, min, stats,...)
  • buckets (terms, histogram, range,...)
  • pipeline (max bucket, stats bucket,...)

https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations.html

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Aggregations

  • nesting
  • partitioning
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Update API

  • update vs index API
  • painless
  • stored scripts

https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-update.html

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Bulk API

  • multi-index
  • multi-operation
  • MUST-HAVE!

https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-bulk.html

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document versioning

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scrolling

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routing

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scalability

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authorization

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backups

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GUIs

  • Kibana
  • Cerebro
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ELK stack

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ELKB (Elastic) stack

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školení ?

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Otázky?

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Jakub Kluvánek jakub.kluvanek@biddingfox.com @kluvi, @biddingfox_devs