solr database integration - Wikitechy https://www.wikitechy.com/interview-questions/tag/solr-database-integration/ Interview Questions Tue, 14 Sep 2021 10:41:57 +0000 en-US hourly 1 https://wordpress.org/?v=6.9 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png solr database integration - Wikitechy https://www.wikitechy.com/interview-questions/tag/solr-database-integration/ 32 32 What is the difference between Apache Solr and MongoDB ? https://www.wikitechy.com/interview-questions/apache-solr/what-is-the-difference-between-apache-solr-and-mongodb/ https://www.wikitechy.com/interview-questions/apache-solr/what-is-the-difference-between-apache-solr-and-mongodb/#respond Mon, 12 Jul 2021 11:39:50 +0000 https://www.wikitechy.com/interview-questions/?p=228 Difference between Apache Solr and MongoDB:
  • Here,Some of the examples of document oriented database is MongoDB, Cassandra, and CouchBD.
Name Apache Solr MongoDB
Description A widely used enterprise
search engine based on Apache Lucene.		 One of the most popular document stores
Developer Apache Software Foundation MongoDB, Inc.
Cloud-based No No
Server operating systems All OS with a Java VM
and a servlet container		 Linux OS X Solaris Windows
Data scheme Yes schema-free
Implementation language Java C++
Secondary indexes Yes Yes
SQL No No
]]> https://www.wikitechy.com/interview-questions/apache-solr/what-is-the-difference-between-apache-solr-and-mongodb/feed/ 0 What is the most ideal approach to use Apache Solr for relational JOIN ? https://www.wikitechy.com/interview-questions/apache-solr/what-is-the-most-ideal-approach-to-use-apache-solr-for-relational-join/ https://www.wikitechy.com/interview-questions/apache-solr/what-is-the-most-ideal-approach-to-use-apache-solr-for-relational-join/#respond Mon, 12 Jul 2021 09:28:47 +0000 https://www.wikitechy.com/interview-questions/?p=224

Apache Solr for relational JOIN:

  • Run a single-use script that do the joins on the SOLR index (file) to replace the author_id and author_name, or include the field if you need both. Updating 10,000,000+ documents will get a while, however it is definitely achievable.
  • After that you can have new documents indexed with both fields, doing the JOIN one at a time.
  • In common, SOLR works with entirely denormalized information.
  • If it is more than just authors’ names, you could still denormalize the information, repeating your documents for every one of the related author documents.
  • Another technique is SOLR 4 has “JOIN” ability.
  • You’d first need to at least contain a pipeline wherever author information is indexed into SOLR in real-time.
  • Utilize Elastic Search to simply deal with the complex SOLR queries involving JOIN-like operations.
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