which search engine for GAE?

I would like to use SPRING ROO and the GAE...but Solr can not run on the GAE. So which alternative to Solr can I use to have 开发者_Python百科a search engine for my website ?

You could have a look at GAELucene, which is a Lucene based full-text search component for App Engine.

If you are looking for a stable solution. I would choose to run SOLR as an external web service (e.g on Amazon ec2 or why not on Amazon Beanstalk ) or wait for the GAE full text search(it should soon ). The other "solutions" are just workarounds and may be also quite expensive (based on the new pricing schema) so I would advice to use them only if your app is not business-critical.