APM

APM is a set of tools that developers use to give them some insight into how fast and how reliably they can run an application. It consists of three services:

• Trace
• Debugger
• Profiler

These tools are integrated into the code of the application. The application does not need to be hosted on GCP, but can run in any cloud or even on-premises, as long as connectivity is available. APM originates from Google's Site Reliability Engineering (SRE) team toolset. So, it is high time that we got into the shoes of SRE!

Trace

Stackdriver Trace allows you to track latencies in your microservices application. It shows you the overall time of the application responses, but can also show detailed delays for each of the microservices...