Discussing The Art of Scalability Article Thinhinane Ihadadene - - PowerPoint PPT Presentation

Thinhinane Ihadadene & Maya Kassis Master 2 CCN 2019 - 2020

Discussing “The Art of Scalability” Article

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Chapter 22. Introduction to the AKF Scale Cube Chapter 23. Splitting Applications for Scale Book: The Art Of Scalability : Scalable Web Architecture, Processes, and Organizations for the Modern Enterprise Authors: Martin L. Abbott and Michael T. Fisher Discussing “The Art of Scalability” Article

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Contents and outlines

Introduction to Scalability Splitting Applications for Scale

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Practical Use of AKF Cube

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Conclusion

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AKF Scale Cube

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INTRODUCTION TO SCALABILITY

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Scalability, Scaling Scalability is The ability of a system (business or technology) to handle increased requests without altering response time. Scaling is The increase or decrease in the capacity of a system by changing the number of allocated processes.

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Scalability, Scaling Scale out or horizontal scaling Scale up or vertical scaling 2 CPU, 4 GB RAM 4 CPU, 8 GB RAM 8 CPU, 16 GB RAM 2 CPU, 4 GB RAM 2 * (2 CPU, 4 GB RAM) 4 * (2 CPU, 4 GB RAM)

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Scaling up vs Scaling out, adapted from : https://dev.to/wmahathre/horizontal-and-vertical-scaling-1lid, 9/20/2019

The AKF Scale Cube

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AKF scale cube

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• The AKF Scale cube is a model for

defining microservices and scaling technology products, invented in 2007 by AKF partners consulting company.

• This cube has a 3-dimensional axis

represent a unique method of scaling products, processes, and teams. X-axis Y- axis Infinit ite Scale

AKF scale cube

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X-axis Represents the cloning of services or data such that work can easily be distributed across instances with absolutely no bias. Y-axis Represents the separation of work responsibility for an action,also known as service or resource oriented split. Z-axis is Represents the separation of work by customers or requestors. X-axis Y- axis (0,0,0) Monolithic ic System Infinit ite Scale

Splitting Applications For Scale

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Scaling Applications : X- AXIS Cloning/Replications

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• Clone services or duplicate databases
• Use a load balancer

Pros :

• Easy and fast to implement
• Perfect for read only databases

Cons:

• Cost of replication
• Doesn't address caching

X-axis Y-axis Infinit ite Scale

Scaling Applications : Y - AXIS Split Different Things

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• Separates into services
• Separates into resources

Pros :

• Increases hit cache
• Fault isolation
• More secured

Cons:

• Difficult and time consuming

X-axis Y-axis Infinit ite Scale

Scaling Applications : Z - AXIS Split Similar Things

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• Separates by region, customers
• Separates into resources

Pros :

• Increases hit cache
• Fault isolation
• More secured

Cons:

• Difficult and time consuming

X-axis Y-axis Infinit ite Scale

Is it sufficient to scale using one axis?

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• Coupled with the needs of an
• rganization
• They might be all used and mixed

AKF Scale Cube - https://akfpartners.com/growth-blog/scale- cube, 9/21/2019

Practical Use of AKF Scale Cube

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Airline Reservation System

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Airlines reservation system developed by IBM, consists of the below: 1- Original/Destination duals and inventories. 2- Global distributed system GDS, connect providers with travel agencies. 3- Real time dynamic pricing system, based on varied number of flight or search characteristics.

Airline Reservation System

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Conclusion

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• AKF Scale Cube can be used to scale either organizations or applications.
• The AKF Scale Cube shows how we can scale but doesn’t say exactly when or which axis should be

applied.

• It’s up to its users to define their needs and decide which strategies should be followed.
• Whenever you need to scale think AKF Scale Cube.

Conclusion

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Any Questions ?

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Bibliography

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Books

• Martin L. Abbott and Michael T. Fisher, 2009, The Art Of Scalability : Scalable Web Architecture,

Processes, and Organizations for the Modern Enterprise, Addison-Wesley

• Dean Leffingwell, 2007, Scaling Software Agility : Best Practices for Large Enterprises, Addison-

Wesley Webography

• https://akfpartners.com/growth-blog/scale-cube, 9/21/2019
• https://gerardnico.com/code/design/scalability, 9/20/2019
• https://dev.to/wmahathre/horizontal-and-vertical-scaling-1lid, 9/20/2019
• https://linuxacademy.com/blog/cloud/scalability-cloud-computing/, 9/20/2019
• http://www.nuodb.com/techblog/what-do-we-mean-database-scalability,9/25/2019

Credits

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• iconfinder.com [used for icons]
• slidesgo.com[for templates]