เกี่ยวกับ Apache solr 4.0

Apache Solr@somkiat

Apache Solr

Search server

Based on Lucene

Full-text search library

Java 100%

Open source

Apache SolrREST API

HTTP

XML

JSON

Apache SolrClient supports

.NET

Java

PHP

Ruby

Python

How we implement ?

SELECT * FROM product

WHERE id LIKE ‘%1%’ AND name LIKE ‘%xxx%’

Problems

Full table scan = Killer performance

RDBMS is not designed for search like that

Architecture

Indexer

Apache Solr

WEB Application

Query

ResultUpdate

How to use ?Install

Define solrconfig.xml

Define schema.xml

Deploy to Java Web Server

Jetty ( Default )

Apache Tomcat

Define schema.xml

Structure of data

Liked table structure

Must have Primary/Unique key

Must have _version_ field

<field name="id" type="string" indexed="true" stored="true" required="true" /> !

<field name="item_id" type="string" indexed="true" stored="true" required="true" /> <uniqueKey>id</uniqueKey>

Solr Administrator

http://localhost:8983/solr

Dashboard page

Add/Update index

Add/Update Index

http://localhost:8983/solr/collection1/update?wt=json

Delete Index

http://localhost:8983/solr/collection1/update?stream.body=<delete><query>*:*</query></delete>&commit=true

Ping

http://localhost:8983/solr/collection1/admin/ping?wt=json

Scaling SolrScale up

CPU, RAM, SSD

Scale horizontal

(http://wiki.apache.org/solr/DistributedSearch)

Scale deep

Sharding and Multiple replicate

Performance ToolsJMeter

SolrMeter

https://code.google.com/p/solrmeter/

http://wiki.apache.org/solr/BenchmarkingSolr

JMeter

SolrMeter

Tuning performance

http://wiki.apache.org/solr/SolrPerformanceFactors

JVM Memory

-Xms1024M -Xmx1024M -server

Virtual Memory

Virtual memory for index

Config in solrconfig.xml

<directoryFactory/>

change from StandardDirectoryFactory to MmapDirectoryFactory

Enable http caching

Config in solrconfig.xml

<httpCaching lastModifiedFrom="openTime" etagSeed="Solr" never304="false"> <cacheControl> max-age=43200, must-revalidate </cacheControl> !

</httpCaching>

Q/A