A presentation on best practices for J2EE scalability from requirements gathering through to implementation, including design and architecture along the way.
This document discusses how to design for scalability in business. It explains that scalability involves both horizontal scale through expanding into more offerings, networks, and revenue streams, as well as vertical scale through increasing the size of traffic, ad spend, returns, and geographic coverage. The most important question for scalability is how to build systems that allow the business to operate independently of the founder's time. The goal of scalability design is to create repeatable systems using both horizontal and vertical scale.
Architecting for Massive Scalability - St. Louis Day of .NET 2011 - Aug 6, 2011Eric D. Boyd
The Cloud now makes seemingly infinite amounts of computing power accessible to everyone. However, to maximize this power, your applications need to scale. In this session, we will explore patterns that enable massive scalability. We will examine Brewer’s CAP Theorem and contrast it to the ACID principles that guide traditional LOB applications. And finally, we will explore how to apply these patterns when building applications for the Cloud using Windows Azure.
Digests for the book "Scalability Rules: 50 Principles for Scaling Web Sites"Cyril Wang
This document outlines 50 principles for scaling web sites. It discusses reducing complexity, distributing workloads, using caching, designing for fault tolerance, and avoiding state. Specific principles covered include reducing unnecessary work, designing for scalability from the start, simplifying solutions iteratively, reducing DNS lookups, and reducing the number of objects where possible to improve performance. The overall message is that scalability requires focusing on simplicity, distribution of work, and optimization of resources.
Historically, business has leveraged design to communicate the value of services and/or products, leveraging design through surface level principles. Although this structure has remained unchanged for decades, design is beginning play a greater and more powerful role in business. Today, the role of design is shifting from a communication tool, to a translation tool – turning user needs into business insights and product offerings, leveraging design through human centered principles. The designer’s role has traditionally come at the END of the development of a product or service. The increasing popularity of roles like UX designer and executive levels in charge of Design/Experience speaks volumes to the fact that business is now assigning a greater value on design by incorporating it from the beginning to the end of product development.
What's the difference between Scalability & Performance? How do you leverage CDNs and browser caching? How do you decide how to cache and where to cache? How do you choose between Consistency and Availability? When should you Denormalize data?
Sql server common interview questions and answersKaing Menglieng
The document discusses common interview questions and answers related to SQL Server. It provides 6 questions and answers about topics like the TCP/IP port SQL Server uses, the differences between clustered and non-clustered indexes, index configurations for tables, collation sensitivity types, what OLTP is, and the differences between primary and unique keys.
This document provides a quick reference guide to system design and scalability. It discusses types of scaling like horizontal and vertical scaling as well as load balancing techniques. It also covers data storage design including databases, caching, and data store sharding. Additionally, it discusses message-oriented middleware, fault handling, networking metrics, and MapReduce.
A presentation on best practices for J2EE scalability from requirements gathering through to implementation, including design and architecture along the way.
This document discusses how to design for scalability in business. It explains that scalability involves both horizontal scale through expanding into more offerings, networks, and revenue streams, as well as vertical scale through increasing the size of traffic, ad spend, returns, and geographic coverage. The most important question for scalability is how to build systems that allow the business to operate independently of the founder's time. The goal of scalability design is to create repeatable systems using both horizontal and vertical scale.
Architecting for Massive Scalability - St. Louis Day of .NET 2011 - Aug 6, 2011Eric D. Boyd
The Cloud now makes seemingly infinite amounts of computing power accessible to everyone. However, to maximize this power, your applications need to scale. In this session, we will explore patterns that enable massive scalability. We will examine Brewer’s CAP Theorem and contrast it to the ACID principles that guide traditional LOB applications. And finally, we will explore how to apply these patterns when building applications for the Cloud using Windows Azure.
Digests for the book "Scalability Rules: 50 Principles for Scaling Web Sites"Cyril Wang
This document outlines 50 principles for scaling web sites. It discusses reducing complexity, distributing workloads, using caching, designing for fault tolerance, and avoiding state. Specific principles covered include reducing unnecessary work, designing for scalability from the start, simplifying solutions iteratively, reducing DNS lookups, and reducing the number of objects where possible to improve performance. The overall message is that scalability requires focusing on simplicity, distribution of work, and optimization of resources.
Historically, business has leveraged design to communicate the value of services and/or products, leveraging design through surface level principles. Although this structure has remained unchanged for decades, design is beginning play a greater and more powerful role in business. Today, the role of design is shifting from a communication tool, to a translation tool – turning user needs into business insights and product offerings, leveraging design through human centered principles. The designer’s role has traditionally come at the END of the development of a product or service. The increasing popularity of roles like UX designer and executive levels in charge of Design/Experience speaks volumes to the fact that business is now assigning a greater value on design by incorporating it from the beginning to the end of product development.
What's the difference between Scalability & Performance? How do you leverage CDNs and browser caching? How do you decide how to cache and where to cache? How do you choose between Consistency and Availability? When should you Denormalize data?
Sql server common interview questions and answersKaing Menglieng
The document discusses common interview questions and answers related to SQL Server. It provides 6 questions and answers about topics like the TCP/IP port SQL Server uses, the differences between clustered and non-clustered indexes, index configurations for tables, collation sensitivity types, what OLTP is, and the differences between primary and unique keys.
This document provides a quick reference guide to system design and scalability. It discusses types of scaling like horizontal and vertical scaling as well as load balancing techniques. It also covers data storage design including databases, caching, and data store sharding. Additionally, it discusses message-oriented middleware, fault handling, networking metrics, and MapReduce.
These questions are prepared by Classical Programming Experts and are asked during job interviews.The Solution to the given programs are prepared by Programming Experts and are often asked in job interviews. Knowing solution to these problems will help you clear your concepts.
The document discusses several interview questions and answers related to programming concepts:
1. It defines the differences between methods and functions, noting that methods are called by object references while functions do not have references, and methods are defined inside classes while functions have independent existence outside classes.
2. It compares datasets and recordsets, noting that recordsets provide one row at a time while datasets represent complete tables, and datasets allow retrieval from different sources and serialization to XML.
3. It explains the difference between object-based and object-oriented languages is that OO languages support inheritance and dynamic binding while object-based languages do not.
4. It provides a definition of a hash table as a data structure that
20 most important java programming interview questionsGradeup
The document discusses 20 important Java programming interview questions. It covers topics such as the differences between interfaces and abstract classes, when to use abstract classes versus interfaces, what the Serializable interface does, how to force garbage collection, the differences between StringBuffer and StringBuilder, checked and unchecked exceptions, how Java allocates stack and heap memory, Java reflection, the Java Virtual Machine, the differences between JDK and JRE, and more.
This chapter discusses principles of scalable performance for parallel systems. It covers performance measures like speedup factors and parallelism profiles. The key principles discussed include degree of parallelism, average parallelism, asymptotic speedup, efficiency, utilization, and quality of parallelism. Performance models like Amdahl's law and isoefficiency concepts are presented. Standard performance benchmarks and characteristics of parallel applications and algorithms are also summarized.
Architecting &Building Scalable Secure Web APISHAKIL AKHTAR
Shakil Akhtar's presentation discusses architecting scalable and secure web APIs. The presentation covers API methodologies like REST, considerations for API design such as security and scalability, and best practices. The document provides an overview of APIs and outlines topics like authentication mechanisms, caching for performance, and transaction handling.
Architecting Web Applications for the Cloud - Design Principles and Practical...Adnene Guabtni
This presentation provides an overview of the best practice and design principles for architecting highly scalable and highly available web applications on Amazon Web Services (AWS) cloud. Architecting web applications for the cloud requires a deep understanding of the true benefits of cloud computing and the implementation of 8 design principles for AWS.
Every website wants to become successful. Few websites however undertake the basic and fundamental steps to build a rock solid foundation to ensure a scalable
The ability to grow (and shrink) according to the needs and the available resources is an essential part of designing applications. In this talk we'll cover the fundamental elements of scalability, including aspects involving people, processes and technology. With sound and proven principles and some advice on how to shape your organisation, set the right processes and design your application, this session is a must-see for developers and technical leads alike.
This document discusses principles of service-oriented architecture (SOA). It defines different types of services like entity services, utility services, and task services. It explains concepts like service granularity, the four tenets of SOA around explicit boundaries, shared schemas/contracts, compatibility policies, and service autonomy. It also covers principles like standardized contracts, loose coupling, abstraction, reusability, statelessness, discoverability, and composability. The document provides examples and definitions for each principle to outline how to design services according to SOA.
This document provides an overview of patterns for scalability, availability, and stability in distributed systems. It discusses general recommendations like immutability and referential transparency. It covers scalability trade-offs around performance vs scalability, latency vs throughput, and availability vs consistency. It then describes various patterns for scalability including managing state through partitioning, caching, sharding databases, and using distributed caching. It also covers patterns for managing behavior through event-driven architecture, compute grids, load balancing, and parallel computing. Availability patterns like fail-over, replication, and fault tolerance are discussed. The document provides examples of popular technologies that implement many of these patterns.
Indexers allow classes and structs to be accessed like arrays. They encapsulate calls to methods to provide cleaner syntax for accessing and setting values. Indexers exhibit a type and can be used to treat an object like an array by looping through its elements. The example shows a WelcomeMessage class with an indexer that allows accessing its messageelements string array using object[index] syntax like an array.
This document discusses platform independent integrated development environments (IDEs) for CSharp. A platform independent IDE is designed to develop software that can run on any operating system without being specific to one. The document lists some offline platform independent IDEs for CSharp development, including MonoDevelop, Emonic, and SharpDevelop. It also lists some online C# compilers.
Variables in C++ can be categorized into different types including character, integer, floating-point, and boolean. Variables are declared to reserve space in memory and can be initialized with values. Constants do not change value once initialized. Variables have a scope defining where they are accessible - local variables only exist within the block they are declared while global variables can be accessed throughout a program.
C++ offers advantages over C# for systems programming and developing device drivers that require low-level access, as C++ programs can be compiled to run directly on hardware while C# code runs on a virtual machine. Specifically, C++ supports template metaprogramming, typedefs, const-correctness, and produces highly optimized code. While some device drivers can now run as user-mode applications in Windows, C++ remains more suitable for kernel-level drivers. The example then demonstrates a simple "Hello World" C++ program using cout to display output.
People often fail in the programming interviews because what type of questions your employer wants you to answer. With this work, you will get exactly what to look forward besides excellent programming and problem solving skills and don't get annoyed and depressed if you failed in one or two interviews . There are millions of opportunities in life
We recently hosted the much-anticipated Community Skill Builders Workshop during our June online meeting. This event was a culmination of six months of listening to your feedback and crafting solutions to better support your PMI journey. Here’s a look back at what happened and the exciting developments that emerged from our collaborative efforts.
A Gathering of Minds
We were thrilled to see a diverse group of attendees, including local certified PMI trainers and both new and experienced members eager to contribute their perspectives. The workshop was structured into three dynamic discussion sessions, each led by our dedicated membership advocates.
Key Takeaways and Future Directions
The insights and feedback gathered from these discussions were invaluable. Here are some of the key takeaways and the steps we are taking to address them:
• Enhanced Resource Accessibility: We are working on a new, user-friendly resource page that will make it easier for members to access training materials and real-world application guides.
• Structured Mentorship Program: Plans are underway to launch a mentorship program that will connect members with experienced professionals for guidance and support.
• Increased Networking Opportunities: Expect to see more frequent and varied networking events, both virtual and in-person, to help you build connections and foster a sense of community.
Moving Forward
We are committed to turning your feedback into actionable solutions that enhance your PMI journey. This workshop was just the beginning. By actively participating and sharing your experiences, you have helped shape the future of our Chapter’s offerings.
Thank you to everyone who attended and contributed to the success of the Community Skill Builders Workshop. Your engagement and enthusiasm are what make our Chapter strong and vibrant. Stay tuned for updates on the new initiatives and opportunities to get involved. Together, we are building a community that supports and empowers each other on our PMI journeys.
Stay connected, stay engaged, and let’s continue to grow together!
About PMI Silver Spring Chapter
We are a branch of the Project Management Institute. We offer a platform for project management professionals in Silver Spring, MD, and the DC/Baltimore metro area. Monthly meetings facilitate networking, knowledge sharing, and professional development. For more, visit pmissc.org.
These questions are prepared by Classical Programming Experts and are asked during job interviews.The Solution to the given programs are prepared by Programming Experts and are often asked in job interviews. Knowing solution to these problems will help you clear your concepts.
The document discusses several interview questions and answers related to programming concepts:
1. It defines the differences between methods and functions, noting that methods are called by object references while functions do not have references, and methods are defined inside classes while functions have independent existence outside classes.
2. It compares datasets and recordsets, noting that recordsets provide one row at a time while datasets represent complete tables, and datasets allow retrieval from different sources and serialization to XML.
3. It explains the difference between object-based and object-oriented languages is that OO languages support inheritance and dynamic binding while object-based languages do not.
4. It provides a definition of a hash table as a data structure that
20 most important java programming interview questionsGradeup
The document discusses 20 important Java programming interview questions. It covers topics such as the differences between interfaces and abstract classes, when to use abstract classes versus interfaces, what the Serializable interface does, how to force garbage collection, the differences between StringBuffer and StringBuilder, checked and unchecked exceptions, how Java allocates stack and heap memory, Java reflection, the Java Virtual Machine, the differences between JDK and JRE, and more.
This chapter discusses principles of scalable performance for parallel systems. It covers performance measures like speedup factors and parallelism profiles. The key principles discussed include degree of parallelism, average parallelism, asymptotic speedup, efficiency, utilization, and quality of parallelism. Performance models like Amdahl's law and isoefficiency concepts are presented. Standard performance benchmarks and characteristics of parallel applications and algorithms are also summarized.
Architecting &Building Scalable Secure Web APISHAKIL AKHTAR
Shakil Akhtar's presentation discusses architecting scalable and secure web APIs. The presentation covers API methodologies like REST, considerations for API design such as security and scalability, and best practices. The document provides an overview of APIs and outlines topics like authentication mechanisms, caching for performance, and transaction handling.
Architecting Web Applications for the Cloud - Design Principles and Practical...Adnene Guabtni
This presentation provides an overview of the best practice and design principles for architecting highly scalable and highly available web applications on Amazon Web Services (AWS) cloud. Architecting web applications for the cloud requires a deep understanding of the true benefits of cloud computing and the implementation of 8 design principles for AWS.
Every website wants to become successful. Few websites however undertake the basic and fundamental steps to build a rock solid foundation to ensure a scalable
The ability to grow (and shrink) according to the needs and the available resources is an essential part of designing applications. In this talk we'll cover the fundamental elements of scalability, including aspects involving people, processes and technology. With sound and proven principles and some advice on how to shape your organisation, set the right processes and design your application, this session is a must-see for developers and technical leads alike.
This document discusses principles of service-oriented architecture (SOA). It defines different types of services like entity services, utility services, and task services. It explains concepts like service granularity, the four tenets of SOA around explicit boundaries, shared schemas/contracts, compatibility policies, and service autonomy. It also covers principles like standardized contracts, loose coupling, abstraction, reusability, statelessness, discoverability, and composability. The document provides examples and definitions for each principle to outline how to design services according to SOA.
This document provides an overview of patterns for scalability, availability, and stability in distributed systems. It discusses general recommendations like immutability and referential transparency. It covers scalability trade-offs around performance vs scalability, latency vs throughput, and availability vs consistency. It then describes various patterns for scalability including managing state through partitioning, caching, sharding databases, and using distributed caching. It also covers patterns for managing behavior through event-driven architecture, compute grids, load balancing, and parallel computing. Availability patterns like fail-over, replication, and fault tolerance are discussed. The document provides examples of popular technologies that implement many of these patterns.
Indexers allow classes and structs to be accessed like arrays. They encapsulate calls to methods to provide cleaner syntax for accessing and setting values. Indexers exhibit a type and can be used to treat an object like an array by looping through its elements. The example shows a WelcomeMessage class with an indexer that allows accessing its messageelements string array using object[index] syntax like an array.
This document discusses platform independent integrated development environments (IDEs) for CSharp. A platform independent IDE is designed to develop software that can run on any operating system without being specific to one. The document lists some offline platform independent IDEs for CSharp development, including MonoDevelop, Emonic, and SharpDevelop. It also lists some online C# compilers.
Variables in C++ can be categorized into different types including character, integer, floating-point, and boolean. Variables are declared to reserve space in memory and can be initialized with values. Constants do not change value once initialized. Variables have a scope defining where they are accessible - local variables only exist within the block they are declared while global variables can be accessed throughout a program.
C++ offers advantages over C# for systems programming and developing device drivers that require low-level access, as C++ programs can be compiled to run directly on hardware while C# code runs on a virtual machine. Specifically, C++ supports template metaprogramming, typedefs, const-correctness, and produces highly optimized code. While some device drivers can now run as user-mode applications in Windows, C++ remains more suitable for kernel-level drivers. The example then demonstrates a simple "Hello World" C++ program using cout to display output.
People often fail in the programming interviews because what type of questions your employer wants you to answer. With this work, you will get exactly what to look forward besides excellent programming and problem solving skills and don't get annoyed and depressed if you failed in one or two interviews . There are millions of opportunities in life
We recently hosted the much-anticipated Community Skill Builders Workshop during our June online meeting. This event was a culmination of six months of listening to your feedback and crafting solutions to better support your PMI journey. Here’s a look back at what happened and the exciting developments that emerged from our collaborative efforts.
A Gathering of Minds
We were thrilled to see a diverse group of attendees, including local certified PMI trainers and both new and experienced members eager to contribute their perspectives. The workshop was structured into three dynamic discussion sessions, each led by our dedicated membership advocates.
Key Takeaways and Future Directions
The insights and feedback gathered from these discussions were invaluable. Here are some of the key takeaways and the steps we are taking to address them:
• Enhanced Resource Accessibility: We are working on a new, user-friendly resource page that will make it easier for members to access training materials and real-world application guides.
• Structured Mentorship Program: Plans are underway to launch a mentorship program that will connect members with experienced professionals for guidance and support.
• Increased Networking Opportunities: Expect to see more frequent and varied networking events, both virtual and in-person, to help you build connections and foster a sense of community.
Moving Forward
We are committed to turning your feedback into actionable solutions that enhance your PMI journey. This workshop was just the beginning. By actively participating and sharing your experiences, you have helped shape the future of our Chapter’s offerings.
Thank you to everyone who attended and contributed to the success of the Community Skill Builders Workshop. Your engagement and enthusiasm are what make our Chapter strong and vibrant. Stay tuned for updates on the new initiatives and opportunities to get involved. Together, we are building a community that supports and empowers each other on our PMI journeys.
Stay connected, stay engaged, and let’s continue to grow together!
About PMI Silver Spring Chapter
We are a branch of the Project Management Institute. We offer a platform for project management professionals in Silver Spring, MD, and the DC/Baltimore metro area. Monthly meetings facilitate networking, knowledge sharing, and professional development. For more, visit pmissc.org.
In the intricate tapestry of life, connections serve as the vibrant threads that weave together opportunities, experiences, and growth. Whether in personal or professional spheres, the ability to forge meaningful connections opens doors to a multitude of possibilities, propelling individuals toward success and fulfillment.
Eirini is an HR professional with strong passion for technology and semiconductors industry in particular. She started her career as a software recruiter in 2012, and developed an interest for business development, talent enablement and innovation which later got her setting up the concept of Software Community Management in ASML, and to Developer Relations today. She holds a bachelor degree in Lifelong Learning and an MBA specialised in Strategic Human Resources Management. She is a world citizen, having grown up in Greece, she studied and kickstarted her career in The Netherlands and can currently be found in Santa Clara, CA.
Joyce M Sullivan, Founder & CEO of SocMediaFin, Inc. shares her "Five Questions - The Story of You", "Reflections - What Matters to You?" and "The Three Circle Exercise" to guide those evaluating what their next move may be in their careers.
A Guide to a Winning Interview June 2024Bruce Bennett
This webinar is an in-depth review of the interview process. Preparation is a key element to acing an interview. Learn the best approaches from the initial phone screen to the face-to-face meeting with the hiring manager. You will hear great answers to several standard questions, including the dreaded “Tell Me About Yourself”.
Success is often not achievable without facing and overcoming obstacles along the way. To reach our goals and achieve success, it is important to understand and resolve the obstacles that come in our way.
In this article, we will discuss the various obstacles that hinder success, strategies to overcome them, and examples of individuals who have successfully surmounted their obstacles.
Learnings from Successful Jobs SearchersBruce Bennett
Are you interested to know what actions help in a job search? This webinar is the summary of several individuals who discussed their job search journey for others to follow. You will learn there are common actions that helped them succeed in their quest for gainful employment.