lucene - Is Solr 4 Production Ready? -

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we right integrating solr search 1 of shopping cart application. have read several suggestions here on stackoverflow use solr 4 having support join in indexes.

my question is, solr 4 production ready? , more importantly using join between 2 indexes have performance impact?

check road map solr 4.0

the current roadmap discussed devs (as of may 2012) 4.0 is:

  • 4.0-alpha release sometime in jun/jul 2012.
  • 4.0-beta release no sooner 30 days after 4.0-alpha. beta release may contain additional features & api changes compared alpha release, should not change index format unless absolutely necessary fix bug.
  • 4.0 (final) release no sooner 30 days after 4.0-beta. final release may contain additional features , api additions compared beta release, should not change apis (or index format) beta release unless absolutely necessary fix bug.

also, don't think solr supports join across indexes. entities need within index. can confirm.
performance, think better ask on solr forums.


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