Microservices

Question 1

What is a micro service ?

Answer 1

The micro-service architectural style is an approach to developing a/single application as a suite of small services/, each running in its own process and communicating with lightweight mechanisms, often an HTTP resource

Question 2

How do micro-services communicate often ?

Answer 2

HTTP

Question 3

Caracteristics of Micro-Services

Answer 3

• Loosely Coupled, Collaborating Services
• Technology diversity
• Scalability
• Ease of deployment
• Fault Tolerance

Question 4

Define Loosely coupled

Answer 4

Ideally, you want the services to have little to no dependence amongst one another. Services should be changable and deployable independently, without requiring changes to other parts of the system.
Services must expose only the information that is absolutely necessary in order to prevent the apps that consume their data from binding too tightly to them.

Question 5

Advantages of Loosely Coupled

Answer 5

This makes it easier to roll out changes in the future.

Question 6

Micro Services monitoring tools

Answer 6

• Kubernetes API for health check-

- Promotheus for overall monitoring

Question 7

Define Kubernetes

Answer 7

Kubernetes (k8s) is an open source platform for automating container operations such as deployment, scheduling and scalability across a cluster of nodes.

Question 8

What are Kubernetes advantages ?

Answer 8

• automate the deployment and replication of containers,
• scale in or out containers on the fly,
• organise containers in groups and provide load balancing between them,
• easily roll out new versions of application containers,
• provide container resilience, if a container dies it gets replaced, etc..

Question 9

What is amazon EKS ?

Answer 9

Amazon Managed Kubernetes Service