nicholashagen / todo-demo-malt

Todo Demo Application for MALT Stack

TODO Demo

This repository contains a simple example of APIs for a TODO app that uses microservices to provide clean separation. The main premise is to highlight the MALT stack (metrics, alerting, logging, and tracing) along with service discovery. These particular examples use the following frameworks.

• APIs : Spring MVC
• Discovery : Eureka
• Metrics : Dropwizard Metrics, Telegraf, InfluxDB, Grafana
• Alerting : ElastAlert
• Logging : Logback, Logstash, Elasticsearch, Kibana
• Tracing : Zipkin
• Service Broker : Kafka

The todo-app is the central API for the service. The app uses the Spring RestTemplate with the Netflix Ribbon API to pull data from the other available APIs via Service Discovery: auth-api-service for user information, task-api-service for task management, and friend-api-service to manage friendships. Each of these services use Spring Boot with Spring Cloud. The APIs use MySQL to fetch the data. Alongside each application is a Logstash collector responsible for parsing the necessary logs and shipping to Kafka.

The eureka-service is a Spring Boot application that sets up Eureka for service discovery. Each application registers itself with Eureka.

The zipkin-service is a Spring Boot application that sets up a Zipkin service for managing tracing between calls.

The alerting module sets up ElastAlert rules that query Elasticsearch for logs to determine if alerts need to be sent out.

The docker module provides a single docker compose configuration for loading all available applications. Warning that running this image requires lots of memory and CPU available to the host.