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From Gopal Patwa <>
Subject Re: Solr is NoSQL database or not?
Date Sat, 01 Mar 2014 15:58:55 GMT
Well said Jack, we are using Solr as NoSQL solution as Jack describe from
Solr version 3.x and still using it in Production with 4.x and on our
Stubhub site most visited page.

On Sat, Mar 1, 2014 at 6:14 AM, Jack Krupansky <>wrote:

> A database is a place you store information for relatively permanent
> reference, called a "system of record". Most commonly data is accessed by a
> primary key. Update of existing data by individual row is a common
> operation.
> Solr is a "search server" or "search platform". The focus of a search
> server is to support rapid and relevant rich search, especially keyword
> text search. Data itself usually lives elsewhere, but is loaded into the
> search server whenever it changes, a process known as "indexing". It is not
> uncommon with a search server to "reindex" data, which means to throw all
> the data away and start over, rereading the data from its source(s)
> (system(s) of record). Update of existing data is usually in "batches", not
> individual rows. Data tends to be added rather than updated.
> Commonly a search server is used in conjunction with some number of
> databases.
> Can one use Solr as a database as well? Sure, its possible, but that's not
> its primary and most popular use at this point.
> I mean, what's one of the most commonly used verbs on the Solr email list?
> We're always telling people to "reindex". Can you imagine database
> developers being told that they must delete all their existing data and
> "start over"?
> -- Jack Krupansky
> -----Original Message----- From: nutchsolruser
> Sent: Friday, February 28, 2014 11:09 PM
> To:
> Subject: Solr is NoSQL database or not?
> You may think this is silly question but let me ask this because i am
> confused ,
>  this
> says
> Solr is NoSQL but many other links dont have solr in their list as NoSQL
> database.
> it's really confusing what is real meaning of NoSQL database?
> --
> View this message in context: http://lucene.472066.n3.
> Sent from the Solr - User mailing list archive at

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