Elastic Search u Rails-u

Elastic Search je ogledalski DB sa indeksima vašeg postojećeg DB-a, koji se može pretraživati preko JSON API-ja. Da biste izvršili pretragu, moraćete da sinhronizujete podatke između vašeg DB-a i Elastic Search-a. To se može uraditi putem reka za izvlačenje podataka iz vaše aplikacije ili za potiskivanje podataka na vaš ES čvor putem _bulk operacija.

Ali krenimo od početka:

Preuzmite Elastic Search deb

cd /usr/share/elasticsearch

 # To install Marvel inside development enviroment
sudo bin/plugin -i elasticsearch/marvel/latest

# In same directory run ES 
bin/elasticsearch -d

#Check if it's working
localhost:9200

Sinhronizacija podataka

Jednostavan način:

class Article
  include Elasticsearch::Model
  include Elasticsearch::Model::Callbacks
end

The more complex way would be:

# 1. Bind callbacks
 after_commit on: [:create] do
  index_document if self.published?
 end

after_commit on: [:update] do
 update_document if self.published?
end

after_commit on: [:destroy] do
  delete_document if self.published?
end

Korišćenje asinhronih naredbi - način koji treba preduzeti

Please refer to
https://github.com/elasticsearch/elasticsearch-rails/tree/master/elasticsearch-     model

JDBC dodatak za Elastic Search

Dodatak Java Database Connection (JDBC) omogućava preuzimanje podataka iz JDBC izvora za indeksiranje u Elastic Search.

https://github.com/jprante/elasticsearch-river-jdbc

Možete postaviti skriptu koja povlači podatke iz MiSKL-a u ES. Da biste to uradili, moraćete da napišete prilagođene SKL upite.

Marvel Plugin

#Check Marvel plugin
http://any-server-in-cluster:9200/_plugin/marvel/.

Java verzije

We recommend installing the Java 8 update 20 or later, or Java 7 update 55 or later. Previous versions of Java 7 are known to have bugs that can cause index corruption and data loss.

Hostovana rešenja

https://qbox.io/

Neke reference:

http://serverfault.com/kuestions/386557/hov-to-indek-miskl-from-elasticsearch