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I have just stumbled upon a treasure trove of information that I cannot wait to share with you! It’s all about getting started with Hyperledger Besu, and trust me, it is a comprehensive guide that will take you on an exciting journey. You’ll learn everything you need to know about this powerful blockchain framework, from its features and benefits to step-by-step instructions on installation and configuration. So, grab a cup of coffee, sit back, and get ready to dive into the world of Hyperledger Besu like never before!

What is Hyperledger Besu?


Hyperledger Besu is an open-source Ethereum client developed under the Hyperledger project. It is designed to be enterprise-friendly, providing a robust and flexible platform for building blockchain applications. Besu, which means “base” in Japanese, is built on the Ethereum Virtual Machine (EVM) and supports Ethereum standards, making it compatible with existing Ethereum infrastructure and tools.

Key Features

Hyperledger Besu offers a range of features that make it a powerful tool for blockchain development. Some of the key features include:

  • Permissioning: Besu provides robust permissioning features, allowing organizations to control who has access to their network and what actions they can perform. This enables the creation of private and consortium networks with varying levels of access.
  • Privacy: Besu supports private transactions, allowing sensitive data to be shared securely on the blockchain network. This is achieved through the use of private contracts and private transactions, ensuring that only authorized participants can access the data.
  • Scalability: Besu is built with scalability in mind, offering high throughput and low latency. It supports various consensus mechanisms, including Proof of Work (PoW), Proof of Authority (PoA), and Istanbul Byzantine Fault Tolerant (IBFT), allowing organizations to choose the most suitable consensus mechanism for their needs.
  • Interoperability: Besu is fully compatible with Ethereum and supports all Ethereum standards, making it easy to integrate with existing Ethereum infrastructure and tools. This ensures that developers can leverage the vast ecosystem of Ethereum tools and libraries while working with Besu.
  • Smart Contract Development: Besu allows developers to write and deploy smart contracts using Solidity, the most widely used smart contract language in the Ethereum ecosystem. It also provides tools for debugging and testing smart contracts, making the development process more efficient.
  • Extensibility: Besu is highly extensible, allowing developers to add custom features and modules to meet their specific requirements. This flexibility makes Besu suitable for a wide range of use cases, from financial services to supply chain management.



Before installing Hyperledger Besu, there are a few prerequisites that need to be in place. These include:

  • Java Development Kit (JDK): Besu requires Java 8 or higher to run. Make sure you have the appropriate version of JDK installed on your system.
  • Operating System Compatibility: Besu is compatible with Linux, macOS, and Windows operating systems. Ensure that your operating system meets the compatibility requirements specified by Besu.

Downloading the Besu Package

To download the Hyperledger Besu package, you can visit the official Besu website or the project’s GitHub page. The package is available as a binary distribution, which means you can download and use it without the need for compilation.

Extracting and Configuring Besu

After downloading the Besu package, extract the contents to a directory of your choice. The package contains the necessary executable files and configuration templates. To configure Besu, you can modify the provided template files according to your network requirements.

Setting Up a Development Environment

Choosing an IDE

When developing with Hyperledger Besu, it is essential to choose an Integrated Development Environment (IDE) that supports smart contract development. Popular IDEs for Ethereum development include Remix, Truffle, and Visual Studio Code with appropriate extensions installed.

Running Besu Locally

To set up a local development environment with Hyperledger Besu, you need to start a local network. This can be achieved by running Besu locally on your machine. By running a local network, you can interact with the Besu client, deploy smart contracts, and test your applications without connecting to a public network.

Creating a Private Blockchain Network

Genesis File

To create a private blockchain network with Besu, you need to create a Genesis file. The Genesis file defines the initial configuration and parameters of the network, including the initial block, the chain ID, and the difficulty and gas limits.

Customizing Your Network

Besu allows you to customize your private blockchain network according to your specific requirements. You can configure various parameters, such as the consensus mechanism, block time, and gas limits, to align the network with your desired performance and security characteristics.

Starting the Network

After customizing the network configuration, you can start the private blockchain network using the Besu client. This will initialize the network with the specified Genesis file and allow participants to connect and interact with the network.

Interacting with the Besu Client

Connecting to the Network

To interact with the Besu client, you need to connect to a running instance of the Besu network. This can be achieved by specifying the network’s endpoint or IP address in the Besu client configuration.

Verifying Connectivity

Once connected to the network, you can verify the connectivity by checking the network status and ensuring that the connection is established successfully.

Executing Transactions

Besu allows you to execute transactions on the blockchain network. You can send Ether, call smart contract functions, or perform various other actions using the Besu client. Transactions need to be signed with the appropriate private key to ensure the authenticity and integrity of the actions performed.

Deploying Smart Contracts

Besu supports the deployment of smart contracts written in Solidity. By using the Besu client, you can compile the smart contract code, deploy it to the network, and interact with the deployed contract instances.

Building a DApp with Besu

Choosing a Web Framework

To build a decentralized application (DApp) with Besu, it is necessary to choose a web framework that supports Ethereum development. Popular choices include React, Angular, and Vue.js.

Setting Up the Frontend

After choosing a web framework, you can set up the frontend of your DApp. This involves creating the user interface, handling user interactions, and integrating with the Besu client to interact with the blockchain network.

Integrating with Besu

Besu provides a JavaScript API that allows seamless integration with your DApp. This API provides functions for interacting with the blockchain, deploying smart contracts, and executing transactions.

Testing and Deploying the DApp

Once the frontend of your DApp is complete, it is crucial to test it thoroughly before deployment. Use the available testing frameworks and tools to ensure the stability and correctness of your DApp. After testing, you can deploy your DApp to the desired network, whether it’s a private, consortium, or public Ethereum network.

Monitoring and Debugging

Monitoring Performance

Monitoring the performance of your Hyperledger Besu network is vital to ensure its stability and efficiency. Utilize monitoring tools and techniques to track metrics such as block confirmation time, transaction throughput, and network latency. This data can help identify performance bottlenecks and optimize the network accordingly.

Logging and Error Handling

Implementing robust logging and error handling mechanisms is crucial for effective debugging and maintenance. Properly logging critical events and exceptions can help diagnose issues and trace the execution flow. Make sure to handle errors gracefully and provide meaningful feedback to users.

Debugging Smart Contracts

Besu provides debugging capabilities for smart contracts. By utilizing the available debugging tools and techniques, you can step through the execution of your smart contracts, inspect variables, and identify any logical or functional issues.

Security Considerations

Enabling Secure Communication

When setting up a Besu network, it is essential to enable secure communication between the clients and the network nodes. This can be achieved by configuring Transport Layer Security (TLS) certificates and enabling encryption for data transmission.

Permissions and Access Control

To ensure the security of your Besu network, it is crucial to implement robust permissions and access control mechanisms. Define roles and permissions for network participants and restrict actions based on these roles. Additionally, consider implementing multi-factor authentication and secure key management practices.

Securing Private Keys

Private keys are crucial for interacting with the Besu network securely. It is essential to store private keys securely and protect them from unauthorized access. Consider using hardware wallets, secure key storage systems, or key management solutions to enhance the security of private keys.

Best Practices for Secure Development

Follow best practices for secure development when building applications with Hyperledger Besu. This includes practices such as input validation, secure coding practices, and regular security audits. Stay updated with the latest security guidelines and consider conducting security assessments to identify and mitigate vulnerabilities.

Contributing to the Besu Project

Understanding the Contribution Process

If you are interested in contributing to the Hyperledger Besu project, it is essential to understand the contribution process. Familiarize yourself with the project’s contribution guidelines, code of conduct, and development workflow. This ensures that you can make meaningful contributions and comply with the project’s standards.

Finding an Area to Contribute

There are various areas in which you can contribute to the Besu project, including bug fixing, feature development, documentation, and community support. Explore the project’s issue tracker, roadmap, and community forums to identify areas that align with your interests and expertise.

Submitting a Pull Request

When you have made the necessary changes or additions to the Besu codebase, you can submit a pull request to contribute your work. Follow the project’s guidelines for creating and submitting pull requests to ensure that your contribution is reviewed and incorporated effectively.

Resources and Further Reading

Official Besu Documentation

The official documentation of Hyperledger Besu is a valuable resource for understanding the various features, configuration options, and development processes. It provides detailed information and examples on how to use Besu effectively.

Community Forums and Support

Engage with the Besu community through forums, mailing lists, and chat channels. These platforms provide an opportunity to seek help, share ideas, and collaborate with other developers and contributors.

Tutorials and Guides

There are several tutorials and guides available online that can help you get started with Hyperledger Besu and explore its various capabilities. These resources provide step-by-step instructions and examples to facilitate your learning journey.

In conclusion, Hyperledger Besu is a powerful and flexible Ethereum client that offers a range of features and capabilities for building enterprise-ready blockchain applications. Whether you are creating a private network, interacting with the Besu client, developing a DApp, or contributing to the project, this comprehensive guide provides you with the necessary information and resources to get started with Hyperledger Besu.

By Steve Hodgkiss

I’m Steve Hodgkiss. I’m a web developer living in-between the United Kingdom and S.E. Asia. I am a fan of technology, travel and food. I’m also interested in programming and web development. Born in the UK, after finishing school I graduated from Technical College with a HND (Higher National Diploma). After working my way up as an Employee of various companies, I went Freelance in 1987. Working both in the UK and locations worldwide, I soon built up my reputation as a very competent developer, being retained by one particular Bank for 15 years. The last few years I've developed more experience that relates to Blockchain Technology and the way it can empower governments, businesses and customers. This includes the development of blockchain platforms and Cryptocurrency exchanges.