This document discusses Elasticsearch and provides an overview of its key features and capabilities. Elasticsearch is described as a flexible, powerful, open source, distributed, real-time search and analytics engine. The document then covers topics like how Elasticsearch is RESTful and uses JSON, its data model of indexes and types, and how it can be used for full text search and analytics capabilities.

1. ElasticSearch. …
!
www.infinnity.ru
8- .NET
т омнр
dotnetconf.ru

2. 2ElasticSearch. … и
•
“Infinnity Solutions”
• –
• –
Э

3. 3ElasticSearch. … и
ы

4. 4ElasticSearch. … и
• хмм
з смм
•
•

5. 5ElasticSearch. … и
-
•
•
и

6. 6ElasticSearch. … и
• и к
ы
•

7. 7ElasticSearch. … и
•
• ф нм
•

8. 8ElasticSearch. … и
Elasticsearch is a flexible and
powerful open source,
distributed, real-time search and
analytics engine
www.elasticsearch.org

9. 9ElasticSearch. … и

10. 10ElasticSearch. … и
ElasticSearch?
•
• Mongo, Cassandra, Solr
• Open-Source

11. 11ElasticSearch. … и
ElasticSearch
• и
• RESTful
• JSON
•
•
•
• и
•
•

12. 12ElasticSearch. … и
• http://ruilopes.com/elasticsearch-setup/ -
windows installer
• https://github.com/mobz/elasticsearch-head
• UI
• (JS + REST)
• http://www.elastichq.org
!

13. 13ElasticSearch. … и
Ша д
И дек ые а лы Lucene (5 а ло )
Index
Type1
Type2
Type3
Index = DataBase
Type = Table
Document = Record
Type1 Json doc
Type2 Json doc
Type2 Json doc
Type 3 Json doc

14. 14ElasticSearch. … и
REST
• Order:
POST http://localhost:9200/order/
• ц
• POST http://localhost:9200/order/book/
BODY:
{
"Author": "E.Evans",
"Name": "Domain driven design"
}

15. 15ElasticSearch. … и
POST http://localhost:9200/order/book/
( http://localhost:9200/order http://localhost:9200/)
BODY :
{
"query":{
"bool":{
"must":[
{
"query_string":{
"default_field":"book.Name",
"query":" driven design"
}
}
]
}
},
"from":0,
"size":50
}
и и
и
REST

16. 16ElasticSearch. … и
•
JSON
• д
е
и
•
д е
д еи
• д и
и
е

17. 17ElasticSearch. … и
• Iу-4770 CPU 3.5GHz
16GB Windows 7 x64
• нммм к
• ц ц и и и
• ц ниои фи
нтипоитр к
• JSON ц
{
Id : 5,
Code : 4E899A40-FA60-4D51-B4F9-BCF9F7FAACEC",
Value : " CC305862-BA2D-409C-A662-3D589EF7011C"
}
•
ElasticSearch

18. ROW COUNT: 1000
THREAD COUNT: 64 (8 CPUs)
TOTAL
Total time: 00:03:39.4040000 (219,40 sec)
Average time: 219,40 ms/operation
Average speed: 4,558 operation/sec
INSERT
Total time: 00:00:54.9130000 (54,91 sec)
Average time: 54,91 ms/operation
Average speed: 18,211 operation/sec
UPDATE
Total time: 00:01:05.4060000 (65,41 sec)
Average time: 65,41 ms/operation
Average speed: 15,289 operation/sec
DELETE
Total time: 00:00:34.2190000 (34,22 sec)
Average time: 34,22 ms/operation
Average speed: 29,224 operation/sec
SELECT
Total time: 00:01:04.8660000 (64,87 sec)
Average time: 64,87 ms/operation
Average speed: 15,416 operation/sec

19. 19ElasticSearch. … и
•
•
д е
19

20. 20ElasticSearch. … и
Cluster (Replica Factor = 1)
Search
Balancer
Node
MasterNode Data Node
Replica 1Shard 1
Shard 2
Search
Balancer
Node
Data Node
Replica 2
DataNode
Replica 3 Shard 3
Shard 4
Shard 4
Shard 5
...

21. 21ElasticSearch. … и
Production
• – 3
node, 1 replica
• 1 node
• SSD
• GitHub:
• 44 amazon EC2 instance
• 30Tb data
• 8 instances и
• 2 replica
• Stackoverflow.com (StackExchange) :
• 3 ES instance / 1 replica

22. 22ElasticSearch. … и
Solr vs
ElasticSearch
http://blog.socialcast.com/realtime-search-solr-vs-elasticsearch/

23. 23ElasticSearch. … и
.NET
• ElasticSearch.NET & NEST
• PlainElastic
https://github.com/elasticsearch/elasticsearch-net
NEST:
• и
и ElasticSearch
• Fluent- и
•
• и
• и и

24. 24ElasticSearch. … и
1. public class Person
{
public string Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
}
2. var test = new Person()
{
Id щ “123456",
LastName = " ",
FirstName = " ",
};
3. client.Index(test); // Nest
4. var items = client.Search<Person>(f => f.Filter(ff => ff.Term(i => i.LastName, " ")));

25. 25ElasticSearch. … и
м

26. 26ElasticSearch. … и
1.
дDefault Timeout = 1 s)
2. ElasticSearch

27. 27ElasticSearch. … и
1. client.Refresh()
д е
2. Analyzers &
Tokenizers

28. 28ElasticSearch. … и
Analyzer
Snowball Analyzer – еал о а о для о я ыко , то ч ле у к .
Input Data
Term1
Term 2
Term 3

29. 29ElasticSearch. … и
• Standard Analyzer –
client.CreateIndex(IndexObject, c => c.AddMapping<Person>(
m => m.MapFromAttributes().IndexAnalyzer("string_lowercase")));

30. 30ElasticSearch. … и
ц
«…elasticsearchconfigelasticsearch.yml»
ц
index:
analysis:
analyzer:
string_lowercase:
tokenizer: keyword
filter: lowercase

31. 31ElasticSearch. … и
Hint
• Nest
• н щ с щ с
• н щ н и щ с
• нмм щ смм щ смм
к ElasticSearch

32. 32ElasticSearch. … и
!
•
н щ н
д
е
• н

33. 33ElasticSearch. … и
• ц
•
•
•
• -
ES

34. 34ElasticSearch. … и
•
•
д
е
•
• RESTлJSON
•
•
ElasticSearch –
…

35. 35ElasticSearch. … и
www.infinnity.ru