As you've seen, Solr offers a plethora of integration options, from its ability to customize its output using the various query response writers, to clients for specific languages, to frameworks that enable powerful frontends for both indexing content as well as providing a jump start in developing the search user interface. The simplicity of using HTTP GET to request actions to be performed by Solr and responding with simple documents makes it very straightforward to integrate Solr-based search into your applications regardless of what your preferred development environment is.

Don't forget to explore all the integration options available for your favorite language, framework, or other needs at http://wiki.apache.org/solr/SolrEcosystem.

In the next chapter, we are going to look at how to scale Solr to meet the growing demand by covering approaches for scaling an individual Solr server as well as scaling out by leveraging multiple Solr servers working cooperatively.