Lucene / Solr as NoSQL database

Lucene and Solr are most popular and widely used search engine. It indexes the content and delivers the search result faster. It has all capabilities of NoSQL database. This article describes about its pros and cons.

NoSQL database should have following capabilities

  1. Schema-less
  2. Does not use SQL as its query language
  3. May not give full ACID guarantees
  4. Stores semi structured data
  5. Ability to store and retrieve faster
  6. No relationship between records
  7. Distributed, Scalable
  8. Clients could be written in any programming language
Lucene / Solr has these capabilities and it could be very well considered as NoSQL Document Store. It will reduce the learning curve of learning one more NoSQL database.

When you pick a SQL / NoSQL database, it will certainly have more number of database related features than Lucene / Solr. Database offers better storage persistence.

Lucene / Solr is designed for search engine but it has some capabilities of database. You could very well use it as document store but make sure you have persisted data some where else. Lucene / Solr cannot be used as primary database / data store. Data should be stored in a persistent store which could be file system or database or any archiving store. Data will also be stored and indexed in Lucene / Solr. Application will retrieve the information from Lucene db. At the end we have to make our application faster.

Reference:
Guardian is using Solr as its database
Lucene and Solr as NoSQL database



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