Domain Driven Design (DDD) is usually associated with microservice architectures. As microservice architectures have been perceived as burdensome and overly complex, so too have organizations started to call into question the relevance of DDD initiatives. The argument is usually that unless an organization reaches a mega-scale that requires eventing to keep and micro-services to scale horizontally, such architectures are overkill.

The Four Golden Signals, developed by Google SREs, are key metrics used to monitor the health of your systems. In today’s complex IT environments, these key metrics can help engineers and IT operations prioritize the most significant issues to address. The Four Golden Signals include: In the following 9-minute video, I focus on two of these signals in particular, latency and errors, because they often result in customer-facing symptoms.