/sw-engineer-challenge

Deltaflare Interview Task: Golang Development for Event Handling and Docker Integration

Objective

The task is designed to evaluate your ability to develop microservices using Golang and Docker, focusing on real-time data handling and querying from a time-series database.

Task Overview

You are required to create a complete microservices setup using Golang and Docker. This setup will include:

  • A daemon service to generate JSON-formatted security events.
  • A client service to query and display critical events.
  • Integration with InfluxDB for event storage.

Specifications

Daemon Service:

  • Develop a Golang daemon that runs continuously to generate random JSON events.
  • Each event must contain the following fields:
    • criticality (integer)
    • timestamp (ISO 8601 format string)
    • eventMessage (string)
  • Push these events to an InfluxDB time-series database.

Client Service:

  • Create a Golang client that queries InfluxDB to retrieve the last 10 events with the highest criticality.
  • Display these events in a clear and concise format of your choice.
  • Package this client into a Docker container.

Docker Network Setup:

Define a Docker Compose file to manage a network comprising:

  • Your daemon service
  • Your client service
  • An InfluxDB container

Requirements

  1. Security: Implement secure-by-design principles in your code.
  2. Quality Assurance: Utilize techniques to ensure code accuracy and quality.
  3. Best Practices: Follow best coding practices and explain your choices.

Deliverables

  1. Source code for both the daemon and client services.
  2. Dockerfiles and Docker Compose file for network setup.
  3. A README file detailing:
    • Setup instructions
    • How to run the services
    • Any dependencies

Presentation

You will have a 90-minute face-to-face interview to:

  1. Demonstrate your microservices setup and its functionality.
  2. Discuss your design and implementation decisions.
  3. Showcase your code and the outputs of both services.
  4. Explain the techniques used for maintaining code quality and security.
  5. Walk through the Docker integration and operations.

Evaluation Criteria

  1. Functionality: Completeness of the services and correctness of outputs.
  2. Code Quality: Readability, structure, and adherence to best practices.
  3. Security: Implementation of secure coding practices.
  4. Presentation Skills: Clarity and depth of the explanation regarding design choices and implementations.

This task is an opportunity to showcase your technical skills as well as your ability to communicate complex ideas effectively. We look forward to your innovative solutions and a detailed discussion during your interview.