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Event-Driven Architecture in Golang

Event-Driven Architecture in Golang

By : Michael Stack
4.9 (11)
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Event-Driven Architecture in Golang

Event-Driven Architecture in Golang

4.9 (11)
By: Michael Stack

Overview of this book

Event-driven architecture in Golang is an approach used to develop applications that shares state changes asynchronously, internally, and externally using messages. EDA applications are better suited at handling situations that need to scale up quickly and the chances of individual component failures are less likely to bring your system crashing down. This is why EDA is a great thing to learn and this book is designed to get you started with the help of step-by-step explanations of essential concepts, practical examples, and more. You’ll begin building event-driven microservices, including patterns to handle data consistency and resiliency. Not only will you learn the patterns behind event-driven microservices but also how to communicate using asynchronous messaging with event streams. You’ll then build an application made of several microservices that communicates using both choreographed and orchestrated messaging. By the end of this book, you’ll be able to build and deploy your own event-driven microservices using asynchronous communication.
Table of Contents (18 chapters)
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1
Part 1: Event-Driven Fundamentals
5
Part 2: Components of Event-Driven Architecture
12
Part 3: Production Ready

Viewing the monitoring data

The application will now be producing a lot of data; to view this data, we need to collect it or, in the case of Prometheus, retrieve it.

The Docker Compose environment was updated with four new services, as follows:

  • The OpenTelemetry collector, which will collect trace and span data
  • Jaeger to render the traces
  • Prometheus to collect and display metrics data
  • Grafana to render dashboards based on the metrics data

The OpenTelemetry collector will also provide Prometheus metrics about the traces and spans it collects:

Figure 12.5 – The additional monitoring services

We have already configured the modules to connect with the collector so that is ready to go. For Prometheus, we still need to configure it to retrieve the metrics from each microservice. The configuration file, /docker/prometheus/prometheus-config.yml, will need to be updated so that it contains a job for each microservice we want to scrape...

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