{Elastic

Search}

* Elasticsearch is a distributed,

* Free and open source

 * analytics engine for all types of data, including textual, numerical, geospatial, structured, and unstructured.
* Based on Lucene

¿What it is?

¿How to work?

# CHAPTER 2
Word Index document
hi 1
it 1,2
is 1,2
a 1,2
simple 1,3
test 1,2,3
yeap 2,3
N°  Content
1 Hi it is a simple test
2 Yep it is a test
3 Yep simple test

We have 1 document with different contents:

Index all words

Word Index document
hi (1,1)
it (1,2) (2,2)
is (1,3)(2,3)
a (1,4)(2,4)
simple (1,5)(3, 2)
test (1,6)(2,5)(3,3)
yeap (2,1)(3,1)

Index the number of content and position of the occurrence

For example, if I need to highlight some word, the last table is very helpful

Advantages

  • Very fast to search

disadvantages

  • The speed of the indexation is slow

Backend

User Interface

Kivana and Elasticsearch

Code

By Samuel LR

Code

  • 111