I AM DAVID ESSIEN
Learn DevOps and SRE
DevOps engineer with over 15 years of experience in the tech industry. He is also the co-founder of Psifon.org and Tersu.
General
Introduction to AWS Elastic Container Service (ECS)
A beginner-friendly introduction to AWS ECS—what it is, why it’s used, and the core concepts you need to get started with container orchestration on AWS.
General
Introduction to AWS EC2 Instance Types
A beginner-friendly guide to AWS EC2 instance types—what they are, how they’re categorized, and how to choose the right instance for your workload.
General
Introduction to Kubernetes
A beginner-friendly introduction to Kubernetes—what it is, why it exists, and the core concepts you need to understand container orchestration at scale.
General
Introduction to Service Mesh
A beginner-friendly introduction to service mesh—what it is, why it exists, and how it helps manage communication, security, and observability in microservices architectures.
General
Introduction to SSH (Part 1)
Part 1 of a practical, beginner-friendly guide to SSH—what it is, why it matters, and the core concepts you must understand.
General
Introduction to SSH (Part 2)
Part 2 of the SSH guide—generating SSH keys, copying them to servers, and using SSH effectively for remote access and file transfer.