In today’s post, I’ll describe what kind of interfaces have been defined in the Sentry project, and how you can take advantage of this knowledge, e.g. in order to create the custom metrics. I’ve tried to keep these interfaces as simple as possible, yet some of them require an explanation, mostly due to the fact, that even though the library itself is rather simple to use (I want to believe that it’s also what you think), it does not mean that the main methods when being executed, will return for example,...