1. Building Scalable Architectures
Micro Services
Sasidhar Gogulapati

2. Agenda
 The Monolith
 Decomposing Applications into Services
 Microservice Characteristics
 Reference – Microservice Architecture
 Drawbacks of Microservices

3. The Monolith
Let’s Imagine we are building an Taxi-
hiring application

5. Browser/
Client
Load
Balancer
Database
Tomcat
UI
WAR/EAR
….......................................
Passenger Mgmt. Service
Driver Mgmt. Service
Payment Service
Notifications Service
Traditional Application Architecture
Easy To: Develop, Test, Deploy, Scale

6. But Large, Complex Monolithic Applications are Problematic 
 Intimidates Developers
 Obstacles to Frequent Deployments
 Overloads IDE and Container, Slows down the development process
 Obstacle to scaling development: lot of coordination and
communication required between UI and Backend services
 Requires long term commitment to a Technology Stack

7. X-axis : Horizontal Scaling
Y-axis: functional
decomposition
Scale by splitting
different things
Z-axis: data
partitioning
The Scale Cube
Decomposing Application into Services

8. Y-axis scaling: Application Level
Passenger UI Passenger Mgmt. Service
Driver UI Driver Mgmt. Service
Payment UI Payment Service
Notifications UI Notifications Service
Apply z-axis and x-axis scaling to each service independently

10. Microservices
More Service, Less Micro
But more realistically..
Focus on building services that make development and
deployment easier
- not just tiny services

11. Benefits of Microservices
Smaller, Simpler apps
 Easier to Understand and Develop
 Faster to Build and Deploy
 Reduced startup time
 Less jar/class path problems

12. Benefits of Microservices
 Scales Development
 Develop, Deploy and Scale each Service Independently
 Improves Fault Isolation
 Eliminates long term commitment to a Single Technology Stack
 Possible to build Modular, Polyglot, multi-framework applications

13. Microservices Architecture for Taxi Hiring Application

14. Drawbacks
 Complexity of developing a distributed system
 Multiple databases and Transaction management
 Complexity of testing a distributed system
 Complexity of deploying and operating a distributed system

15. Future Plans
 Working on a POC to build a Microservice, with the
technologies Spring Boot and Cisco Search API
 Working with Cisco CSTG CSF team to discuss and
participate in building real Microservices to solve
business problems

16. Thank You.