apache solr in aem 6

Introduction to Apache SOLR in Adobe AEM 6

Dr. Yash Mody, PhD CTO | Tekno Point Consulting

About Me

Adobe AEM, Apache Hadoop Instructor & Consultant

Application Architecture and Design Consultant Need I say more?

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Information Retrieval Document Term Inverted Index Term Frequency (tf) Skip Pointers Positional Index Collection Frequency Document Frequency (df) Inverse Frequency Idf = Log10(N/df) Term Frequency Inverse Document Frequency

tf-idf = tf * Idf

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More???

PHEW! No Way

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Apache SOLR

Fire Powered Lucene Distributed Replicated Remote

And just for the record its… SEARCH On LUCENE w/REPLICATION (TBHPHB)

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Installation

Unpack SOLR distribution Add solr.war to webapps Add –Dsolr.solr.home = … OR http://bitnami.com/stack/solr

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Getting solr ready

Starting SOLR cd /usr/local/Cellar/solr/4.7.2/libexec/example/ - jetty java -jar start.jar http://localhost:8983/solr/#/ Adding content using

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Index and search

Indexing Data java -jar post.jar solr.xml

Searching

http://localhost:8983/solr/select?q=solr&wt=json

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Configurations

Configurations are done in 2 xml files schema.xml – SOLR index configurations solrconfig.xml – SOLR configurations

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Indexing

Indexing is using HTTP POST. So indexed can be posted to SOLR via a web request Data can be pulled using Data Import Handler (uses HTTP GET or DB) SOLR can index binary content (textual + metadata) from docs, video, mp3, images and other binary content

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Search

Search features: Paging, Filtering, Sorting, Faceting

Results: xml (Default), json, php, ruby, python etc. Query Parser: used to interpret queries. 2 types of query parsers

Lucene Query Syntax Parser DisMax Parser (Disjunction Max)

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Solr integration approaches

Crawl using an external crawler like Nutch or Heritrix CQ servlets to serialize content into a Solr (JSON/XML) JCR Observer for page modifications to trigger indexing to Solr.

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AEM 6

2 Types In Built Remote (For distributed) Zookeeper (for setting up a cluster)

Shard – horizontal Partition Replication – no of copies of the index files

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SOLR things we didn’t see

https://github.com/evolvingweb/ajax-solr http://wiki.apache.org/solr/SolrQuerySyntax

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Thanks

@yash_mody http://www.linkedin.com/in/modyyash