Imran Bashir - Böcker

The rise of object-oriented (00) software development seems to have helped improve software quality, but it has not, of course, eliminated all possibility of error. Thus, software testing is at least as important today as it ever has been. Testing, as a centerpiece of quality assurance efforts, only increases in value as society becomes more and more reliant on software. Testing 00 components and even 00 systems is not very difficult once you know how to do it. But until now there have been few accounts of how to do it well and none that adequately characterize testing across the life cycle of large 00 software production efforts. This book combines insights from research on 00 testing with insights from industrial testing efforts to produce an account that should be valuable to anyone interested in the theory and practice of testing 00 software. This book provides extensive coverage of testing methods applicable to 00 software development, as well as discussions of underlying concepts and technical underpinnings that enable you to devise additional techniques of your own. It is unlikely that you will apply every test, process, review criterion, or metric described in this book to your software project. If you have a small project, it is unlikely that you will apply more than a few of them. But the breadth of coverage allows you to select and customize them with full knowledge of the alternatives and of the options available if you need to extend testing efforts.

The rise of object-oriented (00) software development seems to have helped improve software quality, but it has not, of course, eliminated all possibility of error. Thus, software testing is at least as important today as it ever has been. Testing, as a centerpiece of quality assurance efforts, only increases in value as society becomes more and more reliant on software. Testing 00 components and even 00 systems is not very difficult once you know how to do it. But until now there have been few accounts of how to do it well and none that adequately characterize testing across the life cycle of large 00 software production efforts. This book combines insights from research on 00 testing with insights from industrial testing efforts to produce an account that should be valuable to anyone interested in the theory and practice of testing 00 software. This book provides extensive coverage of testing methods applicable to 00 software development, as well as discussions of underlying concepts and technical underpinnings that enable you to devise additional techniques of your own. It is unlikely that you will apply every test, process, review criterion, or metric described in this book to your software project. If you have a small project, it is unlikely that you will apply more than a few of them. But the breadth of coverage allows you to select and customize them with full knowledge of the alternatives and of the options available if you need to extend testing efforts.

This book is your comprehensive guide to understanding Blockchain and Blockchain consensus algorithms. It covers distributed systems, distributed consensus, and relevant system models. And you'll explore how classical and modern consensus algorithms work. The book also covers quantum consensus and explains the role that quantum computing plays in distributed systems.Consensus protocols allow participants in distributed systems to agree on a common value, despite faults. It's a fundamentally important construct in distributed systems. As a result of rigorous and ground-breaking research over the last four decades, many consensus mechanisms have been developed and are used in the industry today. However, with the advent of Blockchain technology, a renewed interest has arisen in this area, resulting in more research and innovation.The first Blockchain, Bitcoin, was invented in 2008 and introduced a novel consensus protocol called Nakamoto consensus, a solution to the Byzantine General's problem formulated almost 30 years ago. Since the introduction of Bitcoin, the interest in Blockchain and consensus protocols has risen exponentially. As a result, researchers from academia and industry have proposed many new consensus mechanisms. While fundamental goals and some techniques remain the same as established classical protocols, these modern protocols introduce innovative methods to achieve consensus in Blockchain. Some classical algorithms have been modified to make them suitable for Blockchain and some new protocols have been developed.This book is a detailed account of classical distributed consensus and Blockchain consensus algorithms. It explains why and how cryptocurrencies and Blockchain remain secure and decentralized without depending on a trusted third party. In addition, you'll learn how Blockchain can endure, even with hundreds or thousands of participants, out of which some might be malicious. The book introduces quantum consensus, which deals with the problem of reaching agreement in quantum networks and how to enhance classical results.What You Will LearnUnderstand distributed systems, distributed consensus, and relevant system models and protocolsUnderstand Blockchain and Blockchain consensus algorithmsKnow how classical and modern consensus algorithms work Know the inner workings of Paxos, RAFT, PBFT, HotStuff, proof of work, proof of stake, GRANDPA, Casper, proof of history, and other consensus protocolsUnderstand quantum Byzantine agreement and quantum consensusWho This Book Is ForDistributed systems and Blockchain students and researchers, Blockchain practitioners, architects, designers, product managers, and developersThis book targets many audiences as well as those with curious minds. It explains the classical consensus mechanisms, Blockchain age consensus protocols, and the latest developments in distributed consensus. The book does not assume any advanced knowledge of Blockchain or distributed systems, but a general understanding of computing and appreciation of Blockchain technology is helpful. Early chapters provide the necessary background to read and understanding consensus-related content quickly.Readers who already understand classical consensus protocols and distributed systems but want to learn about Blockchain consensus will find the book helpful as it covers Blockchain age protocols in detail. Readers who have come to the Blockchain world without any, or with little, background in distributed systems or classical consensus protocols will find this book equally helpful as it provides a solid understanding of classical consensus protocols.If you have no experience in Blockchain or don’t understand distributed computing in general, this book will give you a solid understanding of both subjects and enable you to conduct further research in this exciting area of distributed computing.

Demystify one of the most disruptive modern technologies and gain a deeper understanding of distributed ledgers, consensus protocols, smart contracts, DApps, cryptocurrencies, and more.Purchase of the print or Kindle book includes a free eBook in PDF format.Key FeaturesStudy new blockchains, including Polkadot, Solana, and Avalanche blockchain, along with recent developments in security, scalability, and privacyExplore key cryptocurrencies and distributed ledgers such as Ethereum, Bitcoin, Hyperledger Fabric, Corda, and QuorumGet to grips with Solidity, Web3, NFTs, DeFi, and smart contract developmentBook DescriptionBlockchain is the backbone of cryptocurrencies, it has had a massive impact in many sectors, including finance, supply chains, healthcare, government, and media. It’s also being used for cutting edge technologies such as AI and IoT. This new edition is thoroughly revised to offer a practical approach to using Ethereum, Hyperledger, Fabric, and Corda with step-by-step tutorials and real-world use-cases to help you understand everything you need to know about blockchain development and implementation. With new chapters on Decentralized Finance and solving privacy, identity, and security issues, as well as bonus online content exploring alternative blockchains, this is an unmissable read for everyone who wants to gain a deep understanding of blockchain.The book doesn’t shy away from advanced topics and practical expertise, such as decentralized application (DApp) development using smart contracts and oracles, and emerging trends in the blockchain space. Throughout the book, you’ll explore blockchain solutions beyond cryptocurrencies, such as the IoT with blockchain, enterprise blockchains, and tokenization, and gain insight into the future scope of this fascinating and disruptive technology.By the end of this blockchain book, you will have gained a thorough comprehension of the various facets of blockchain and understand the potential of this technology in diverse real-world scenarios.What you will learnGrasp the mechanisms behind Bitcoin, Ethereum, and other cryptocurrenciesUnderstand cryptography and its usage in blockchainBecome familiar with the theoretical foundations of smart contracts and blockchain consensusDevelop DApps using Solidity, Remix, Truffle, and GanacheSolve issues relating to privacy, identity, scalability, and security in enterprise blockchainsDive into the architecture of Ethereum 2.0Delve into emerging trends like DeFi, NFTs, and MetaverseExplore various applications, research topics, and future directions of blockchainWho this book is forThis book is for blockchain enthusiasts from all backgrounds, including software developers and programmers who want to learn how to build DApps, business executives and managers who want to explore the benefits and challenges of leveraging blockchain in different industries, and system architects and solution designers who want insight into blockchain architecture, consensus mechanisms, and security considerations. It is also a useful reference guide for blockchain development professionals who want to build fast and highly secure transactional applications. Basic knowledge in any programming language will come in handy.

Explore distributed ledger technology, decentralization, and smart contracts and develop real-time decentralized applications with Ethereum and SolidityKey FeaturesGet to grips with the underlying technical principles and implementations of blockchainBuild powerful applications using Ethereum to secure transactions and create smart contractsGain advanced insights into cryptography and cryptocurrenciesBook DescriptionBlockchain technology is a distributed ledger with applications in industries such as finance, government, and media. This Learning Path is your guide to building blockchain networks using Ethereum, JavaScript, and Solidity. You will get started by understanding the technical foundations of blockchain technology, including distributed systems, cryptography and how this digital ledger keeps data secure. Further into the chapters, you’ll gain insights into developing applications using Ethereum and Hyperledger. As you build on your knowledge of Ether security, mining , smart contracts, and Solidity, you’ll learn how to create robust and secure applications that run exactly as programmed without being affected by fraud, censorship, or third-party interference. Toward the concluding chapters, you’ll explore how blockchain solutions can be implemented in applications such as IoT apps, in addition to its use in currencies. The Learning Path will also highlight how you can increase blockchain scalability and even discusses the future scope of this fascinating and powerful technology. By the end of this Learning Path, you'll be equipped with the skills you need to tackle pain points encountered in the blockchain life cycle and confidently design and deploy decentralized applications.This Learning Path includes content from the following Packt products:Mastering Blockchain - Second Edition by Imran BashirBuilding Blockchain Projects by Narayan PrustyWhat you will learnUnderstand why decentralized applications are importantDiscover the mechanisms behind bitcoin and alternative cryptocurrenciesMaster how cryptography is used to secure data with the help of examplesMaintain, monitor, and manage your blockchain solutionsCreate Ethereum walletsExplore research topics and the future scope of blockchain technologyWho this book is forThis Learning Path is designed for blockchain developers who want to build decentralized applications and smart contracts from scratch using Hyperledger. Basic familiarity with any programming language will be useful to get started with this Learning Path.