Theses slides are outdated please read directly : http://fr.slideshare.net/nicolasbadey/elasticsearch-elastica-in-symfony2-sflive-2015

1. Elastica
ElasticaBundle
Nicolas Badey
CTO - Yoopies

2. ElasticSearch
• Raised 10M$ in November 2012
• First version in February 2010 after Compass was dropped
• Competitors :
- Solr
- Sphynx

3. ElasticSearch
• “Distributed, RESTful, Search Engine built on top of Apache Lucene”
• Schema-less
• JSON
• Java (Netty/Spatial4j)
• Easy to install : dpkg –i elasticsearch.deb
• Usage : Alternative Data Storage or/and Search Index

4. Features
• Boost (scoring)
• Analyzers
• GeoLocation
• Facets
• Highlighting
• Scripting : MVEL/Java/Javascript /Groovy/Python
• Percolator (Prospective Search)
• Cache
• Plugin (attachment type, Twitter River …)

5. Why ElasticSearch ?
• Very fast
• Document != Data Model
• Doctrine Mapping/Listener
• Advanced search functionalities

6. Search
curl -XGET http://localhost:9200/[INDEX]/[TYPE]/_search -d ‘{
"query": {
"query_string": {
"query": "foobar"
}
},
"filter": {
"numeric_range": {
"price": {
"lte": 42
}
}
},
"sort": {
"created_at": {
"order": "desc"
}
}
}’

7. Elastica
• v0.19.8.0 => PHP 5.2
• v0.20.5.0.RC1 => PHP 5.3 / PSR 0-1-2

8. ElasticaBundle
• Persistence automatic provider, Doctrine/Propel/MongoDB
• Pagination, PagerFanta / KNPpaginator
• Service :
Client Index Type Finder
• Persistence listener CallBack (only Doctrine)
• Custom Doctrine query builder
• Custom Provider
• Custom Elastica To Model Transformer/Model To Elastica Transformer
• Exercise / FOQElasticaBundle => FriendsOfSymfony/FOSElasticaBundle

9. Mapping

10. Mapping

11. Filter vs Query
• Filter
- cached
- speed
• Query
- scoring

12. Cache
• Filter (recommended)
• Node
• Index
• Filter Cache is active by default for most of them
• $filter->setCached(true);

13. ScriptFilter
• Computed distance
• Custom Scoring :
“_score * doc['my_numeric_field'].value / pow(param1, param2)”

14. Highlight
• Implement HighlightableModelInterface for model

15. Facets
• Terms, Range, Histogram, Filter,
Query, Statistical, Terms Stats,
GeoDistance …

16. Data Transformer
• ElasticaToModel Transformer
• ModelToElastica Transformer

17. _search _percolator
FormA FormB Entity
Search Search
ModelA ModelB Model
ToElastica
ElasticaQuery
Factory
Document
Percolator Query
Percolator
Elastica
Finder Type
ToModel
Array
(match)
Response
Entities
Set

18. Percolator
Register
Match

19. Annexes
• https://github.com/FriendsOfSymfony/FOSElasticaBundle
• http://richardmiller.co.uk/
• http://www.elasticsearch.org/
• https://github.com/sonian/elasticsearch-jetty
• http://www.elasticsearch.org/tutorials/javascript-web-applications-and-
elasticsearch/
• http://www.elasticsearch.org/tutorials/using-elasticsearch-for-logs/
• http://blog.sematext.com/2012/08/23/solr-vs-elasticsearch-part-1-
overview/