Before I proceed with how Nameko, a python framework makes microservice development, let have in mind that microservice is just another way developing software by building services or components separately from each other.

Assuming we have decided to build a Bus Ticketing System with the following components in mind:

• Register
• Login(Reset)
• Email
• Billing
• Booking
• Notification
• Verification

In a monolithic pattern, a team of software engineers would develop the following functions using a server-side language such as Ruby, Golang, Node.js or Python for all components.

These components would all reside on each instance of web servers backed by a load balancer such as Nginx to prevent DDOS attack.

However, in a microservice pattern, the structure is a bit different. These components could be developed with different server-side languages or frameworks.

Nameko as a microservice framework has made it possible for software developers to implement services with ease with the help of dependency injection.

Dependency injection by Nameko allows software developers to separate code for external entities such as databases, Cached systems from the services code.

For instance, the register service and login service could just call the insert() function or query() function from a mongodb or postgres database.

Also have in mind that both the register service and billing service may have a separate postgres database to store users' details.

This is how nameko make microservice development quite flexible for software engineers without the hustle of clustering services with the backend code.