In this chapter, we discussed AJAX Solr, which is an advanced JavaScript library that can be used to execute queries on a Solr server from a web browser. We saw the different components of AJAX Solr and discussed their internals. We also built a sample application using AJAX Solr and saw how the different components interact with each other. We also saw that, in addition to the display of the results received from Solr, Ajax Solr can be used for pagination, faceting, and building tag clouds.

In the next chapter, we will go through the benefits of using SolrCloud. We will see how SolrCloud can be set up and used to perform distributed indexing and search.