Book Image

Hands-On Blockchain with Hyperledger

By : Nitin Gaur, Luc Desrosiers, Venkatraman Ramakrishna, Petr Novotny, Salman A. Baset, Anthony O'Dowd
Book Image

Hands-On Blockchain with Hyperledger

By: Nitin Gaur, Luc Desrosiers, Venkatraman Ramakrishna, Petr Novotny, Salman A. Baset, Anthony O'Dowd

Overview of this book

Blockchain and Hyperledger technologies are hot topics today. Hyperledger Fabric and Hyperledger Composer are open source projects that help organizations create private, permissioned blockchain networks. These find application in finance, banking, supply chain, and IoT among several other sectors. This book will be an easy reference to explore and build blockchain networks using Hyperledger technologies. The book starts by outlining the evolution of blockchain, including an overview of relevant blockchain technologies. You will learn how to configure Hyperledger Fabric and become familiar with its architectural components. Using these components, you will learn to build private blockchain networks, along with the applications that connect to them. Starting from principles first, you’ll learn to design and launch a network, implement smart contracts in chaincode and much more. By the end of this book, you will be able to build and deploy your own decentralized applications, handling the key pain points encountered in the blockchain life cycle.
Table of Contents (20 chapters)
Title Page
Copyright and Credits
Packt Upsell

Modifying or upgrading a Hyperledger Fabric application

The design of a generic Hyperledger Fabric application presented in Chapter 5Exposing Network Assets and Transactions, offers hints about the types of upgrades that may be required during its lifetime. Let us examine the various ways in which the requirements of a Fabric network and its users change over time:

  • Software updates: Changes and upgrades are an integral part of software maintenance. More frequently, modifications are required to fix bugs, performance inefficiencies, and security flaws (for example, think of the Windows Update Service). Less frequently, though almost equally inevitably, major design changes must be made to software to handle unanticipated challenges. Also, given that most applications depend on other (third-party) software, any upgrades in the latter trigger corresponding changes in the former. Think of Windows Service Packs as an analogy. In the Hyperledger Fabric world, you as an application developer or...