Okay, so you have your brand new car up and running and have been using it judiciously day in and day out, but you don't maintain it properly from time to time! What will happen? Of course, the performance is going to deteriorate over a period of time. Another thing could be that your car supports automatic parking but you never found out how to override the default setting. In such a case, a manual comes in handy for learning and tweaking all the features that your car can provide. Similarly, you need to fine-tune and manage your Solr so as to get the most out of it. This is exactly what we are going to see in this chapter.