Completek8s Classroomnotes 20/Jun/2023

Monolith

• In this category application is developed
  • to run on a single server
  • in single code base
  • in single technology
• Architecture:
  
• Problems:
  • Deployment:
    • To make the smallest possible change on business logic server, we need to take the application down and then deploy
• Advantages:
  • Simple to configure
  • Simple to deploy

Distributed Monolith

• Application is broken into individually runnable services which share the common database
  

MicroServices

• Application is broken down into smaller individually deployable services with each service having its own database/datastore
  
• Generally domain/problem based decomposition is popular phenomnenon.
• Eventual consistency is important term
• Advantages:
  • Scaling: Individually scale the microservices
  • Technology Changes: each service can be implemented in technology suitable for it.
• Disadvantages:
  • Orchestration:
  • Distributed system challanges

Containers

• What are solaris zones & when were they introduced?
• When was linux namespaces & containers introduced?
• We will figure out this technology tomorrow.