In this chapter, we will talk about various application-deployment techniques, followed by some monitoring tools that are used post-deployment.

Each of the tools and techniques has its own set of features. For example, adding too much monitoring to an application can prove to be an extra overhead to the application and the developers as well. Similarly, missing out on monitoring can lead to undetected user errors and overall user dissatisfaction.

Hence, we should choose the tools wisely and they will ease our lives to the maximum.

In the post-deployment monitoring tools, we will discuss Pingdom and New Relic. Sentry is another tool that will prove to be the most beneficial of all from a developer's perspective. It has already been covered in the Using Sentry to monitor exceptions recipe in Chapter 10, Debugging, Error Handling, and Testing.