You've deployed Solr, and the world is beating a path to your door, leading to a sharp increase in the number of queries being issued, and meanwhile you've indexed tenfold the amount of information you originally expected. You discover that Solr is taking longer to respond to queries and index new content. When this happens, it's time to start looking at what configuration changes you can make to Solr to support more load. We'll look at a series of changes/optimizations that you can make, starting with the simplest changes that give the most bang for your buck to more complex changes that require thorough analysis of the impact of the system changes.
In this chapter, we will cover the following topics: