{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