What does it take to run applications?
- Lets consider bookmy show as an application example
- To run the application as we have observed in the class, we require
- some operating system
- necessary softwares to be installed (java)
- Software package to be downloaded (spring petclinic)
- network: ipaddress and port
- cpu, ram and disk
Lets see what a container offers
- Inside the container also,
- we have an os
- network
- cpu/ram/storage
- necessary softwares
- we downloaded package
- we executed application.
- As we discussed, containers can be scaled (increased)
- If we can rethink of application as multiple individually runnable services rather than a ntier (or monolith)
- We can scale the necesary components which can reduce costs
- We can individually update the necessary components without impacting the whole application
- By the way this approach is technically referred as micro-services.
