- published: 02 Oct 2016
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Scalability is the capability of a system, network, or process to handle a growing amount of work, or its potential to be enlarged in order to accommodate that growth. For example, it can refer to the capability of a system to increase its total output under an increased load when resources (typically hardware) are added. An analogous meaning is implied when the word is used in an economic context, where scalability of a company implies that the underlying business model offers the potential for economic growth within the company.
Scalability, as a property of systems, is generally difficult to define and in any particular case it is necessary to define the specific requirements for scalability on those dimensions that are deemed important. It is a highly significant issue in electronics systems, databases, routers, and networking. A system whose performance improves after adding hardware, proportionally to the capacity added, is said to be a scalable system.
An algorithm, design, networking protocol, program, or other system is said to scale if it is suitably efficient and practical when applied to large situations (e.g. a large input data set, a large number of outputs or users, or a large number of participating nodes in the case of a distributed system). If the design or system fails when a quantity increases, it does not scale. In practice, if there are a large number of things (n) that affect scaling, then resource requirements (for example, algorithmic time-complexity) must grow less than n2 as n increases. An example is a search engine, which scales not only for the number of users, but also for the number of objects it indexes. Scalability refers to the ability of a site to increase in size as demand warrants.
Scalable Continuous Media Streaming Systems: Architecture, Design, Analysis E-Book
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Read your free e-book: http://copydl.space/mebk/50/en/B000QCQTZC/book Continuous media streaming systems will shape the future of information infrastructure. The challenge is to design systems and networks capable of supporting millions of concurrent users. Key to this is the integration of fault-tolerant mechanisms to prevent individual component failures from disrupting systems operations. These are just some of the hurdles that need to be overcome before large-scale continuous media services such as video-on-demand can be deployed with maximum efficiency. The author places the subject in context, drawing together findings from the past decade of research whilst examining the technologys present status and its future potential. The approach adopted is comprehensive, covering topics nota...
Read your free e-book: http://hotaudiobook.com/mebk/50/en/B00YF0OSHC/book The Comprehensive, Proven Approach to It Scalabilityupdated with New Strategies, Technologies, and Case Studies In The Art of Scalability, Second Edition, leading scalability consultants Martin L. Abbott and Michael T. Fisher cover everything you need to know to smoothly scale products and services for any requirement. This extensively revised edition reflects new technologies, strategies, and lessons, as well as new case studies from the authors pioneering consulting practice, Akf Partners. Writing for technical and nontechnical decision-makers, Abbott and Fisher cover everything that impacts scalability, including architecture, process, people, organization, and technology. Their insights and recommendations reflec...
http://xmllondon.com/2016/presentations/chelsom/
Read your free e-book: http://hotaudiobook.com/mebk/50/en/B00PLOC4HM/book Architecting High Performing, Scalable and Available Enterprise Web Applications provides in-depth insights into techniques for achieving desired scalability, availability and performance quality goals for enterprise web applications. The book provides an integrated 360-degree view of achieving and maintaining these attributes through practical, proven patterns, novel models, best practices, performance strategies, and continuous improvement methodologies and case studies. The author shares his years of experience in application security, enterprise application testing, caching techniques, production operations and maintenance, and efficient project management techniques.delivers holistic view of scalability, availab...
http://j.mp/2cIiX9x
A quick demo of the scalability and power of the elastic cloud-computing within StatPro Revolution Performance. Watch us calculate 10,000 portfolios in under 15 minutes!
This session focuses on practical architectural guidance for designing highly available applications using Microsoft Azure (IaaS). The session covers basic architecture of cloud-based applications and then dives into the details and considerations necessary for choosing the right architecture for your application. Topics include the design of highly available applications in the cloud, increasing the availability of existing applications, and design changes needed for applications that have been through a lift & shift migration. https://ignite.microsoft.com/
David Malan teaching CS75 lecture 9, Scalability. http://www.cs75x.net/
Google Tech Talks June 23, 2007 ABSTRACT This talk will discuss some of the scalability challenges that have arisen during YouTube's short but extraordinary history. YouTube has grown incredibly rapidly despite having had only a handful of people responsible for scaling the site. Topics of discussion will include hardware scalability, software scalability, and database scalability. Speaker: Cuong Do Cuong is currently an engineering manager at YouTube/Google. He was part of the engineering team that scaled the YouTube software and hardware infrastructure from its infancy to its current scale. Prior to YouTube/Google, he held various software development and management positions at PayPal and Inktomi. Google engEDU Speaker: Cuong Do
Shannon -jj Behrens, Mike Solomon This talk covers scalability at YouTube. It's given by one of the original engineers at YouTube, Mike Solomon. It's a rare glimpse into the heart of YouTube which is one of the largest websites in the world, and on
Mobile Software Engineering Harvard College Introduction to principles of software engineering for mobile devices and best practices, including code reviews, source control, and unit tests. Topics include Ajax, encapsulation, event handling, HTTP, memory management, MVC, object-oriented design, and user experience. Languages include HTML5, JavaScript, Objective-C, and PHP. Projects include mobile web apps and native iOS apps. https://www.cs164.net/Lectures#Lecture_9:_Scalability
Speaker: Bhavin Turakhia This session covers a wide-array of topics and a plethora of lessons we have learnt (some the hard way) over the last 9 years in building web apps that are used by millions of users serving billions of page views every month. Topics and Techniques include Vertical scaling vs Horizontal Scaling, Loose Coupling, Caching, Clustering, Db Partitioning, Tuning, Reverse Proxying and more.
In this talk Ben Hughes and Jon Tai share what we did to improve reliability and scalability, how we shifted from tactics to strategy, and the lessons we learned along the way.
Google Tech Talks June 23, 2007 ABSTRACT Marissa Mayer, Vice President, Search Products & User Experience, leads the product management efforts on Google's search products -- web search, images, groups, news, Froogle, the Google Toolbar, Google Desktop, Google Labs, and more. She joined Google in 1999 as Google's first female engineer and led the user interface and webserver teams at that time. Her efforts have included designing and developing Google's search interface, internationalizing the site to more than 100 languages, defining Google News, Gmail, and Orkut, and launching more than 100 features and products on Google.com. Several patents have been filed on her work in artificial...
DEVCON1 4:00pm Day 1 Ethereum's Vitalik Buterin presents on scalability and asynchronous programming.
When folks start their Startups they always they spend countless nights worrying about they're project failing. Ironically the problem that founders don't take seriously enough is what happens if your venture is exponentially more popular than you expected. Can your core infrastructure grow to meet the demand, or will you have to migrate to new systems? Can your customer support staff (you) handle an influx of trouble tickets, or will wait times drag out indefinitely for your customers. Migrations always suck. Migrations during times of massive growth can end up killing a startup. Many startups simply "throw money" at the problems and are able to grow despite their failings, but in an industry where projects cost tens to hundreds of thousands of dollars to complete this is not an opt...
Elastic Load Balancing provides a scalable and highly-available load balancer that automatically distributes incoming application traffic across multiple Amazon EC2 instances. It enables you to achieve even greater fault tolerance in your applications, seamlessly providing the amount of load balancing capacity needed in response to incoming application traffic. In this session, we take a deeper look at some of the existing and newer features that enable application developers to architect highly-available architectures that are resilient to load spikes and application failures. We also explore some of the features that allow seamless integration with services such as Auto Scaling and Amazon Route 53 to further improve the scalability and resilience of your applications.