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I have been told that when there are load balancers and multiple servers, lucene will not work.

Is there an alternative that we can still use Lucene as the search engine.

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You might have read that Solr is a better solution, but Lucene does work. You will have indexes on all your servers though.

More info on a similar question here: How to maintain Sitecore Lucene Indexes in a huge content delivery web farm?

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Lucene does work. You will get separate copy of indexes on all your severs and they would be updated seprately on each server.

There are alternatives:

  • Solr or Solr Cloud,
  • Coveo,
  • Azure Search
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  • By Separate copy of indexes, you mean we have to manually/programatically copy the files to all the servers. In that case, the main instance should be shut down is it right?
    – Qwerty
    Oct 14 '17 at 13:35
  • You don't need to do that manually (although that is done sometimes at first setup) - but if you do, the instances must be stopped indeed.
    – Gatogordo
    Oct 14 '17 at 13:47
  • If i had to do them programmatically will it work. Wont the indexes be locked, when I do copy?
    – Qwerty
    Oct 14 '17 at 14:01
  • By separate copy of indexes I mean that each server will maintain indexes for itself. There is folder where indexes are stored on disk and each server has it's own folder. So when you do a publish from CM to CD, each CD server would have to update own copy of indexes. Oct 16 '17 at 6:43

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