Will anyone explains about consensus in hyperledger fabric and how it will work in fabric with a simple example. I have gone through so many websites but I didn't get any idea. please let me know anyone. thanks in advance.
Read this high-level description, and the transaction flow diagram it links to.
The official documentation is always a good place to start...
Related
I'm using the fabcar project: https://github.com/IBM/blockchain-application-using-fabric-java-sdk
It uses HyperLedger 1.4.1. I would like to know a bit more about privacy-enhancing solutions.
How is Zero Knowledge Proof (ZKP) implemented?
Are there any other techniques or solutions implemented?
Thank you very much.
You can implement it using Identity Mixer as stated by IBM Hyperledger Dcoumentation.But I have not come across any working example so far neither from IBM Hypeledger site nor any other unofficial dev blogs.
https://hyperledger-fabric.readthedocs.io/en/latest/idemix.html
I've been studying the Hyperledger Fabric framework reading the docs for quite a while now but I'm getting a little lost in the middle of all that info. My question is: Is there any guidelines/"Step by step" on how to design a blockchain network from scratch? If you are starting a new project, where do you start?
Because I think I would understand it way more quicker if I actually started coding a little instead of reading and reading and reading...
Thanks a lot!
Edit 1:
I've chosen #kekomal answer as the correct one but I'd like to thank #Isha Padalia for the awesome VS Code extension and tutorial.
If you are really interested in learning and diving into Hyperledger Fabric, avoid byfn script. It performs a lot of magic for building a very simple Hyperledger Fabric network. After that, you have a network that you don't know how has been created and you have absolutely no idea of how to start deploying your custom network. There are daily questions here from people who started that way and are absolutely lost.
I find interesting this tutorial: https://medium.com/beyondi/setup-the-hyperledger-fabric-network-from-scratch-b82913b47549. Take into account that it is a little bit outdated.
You can complement it with this newer tutorial: https://www.blockchainexpert.uk/blog/how-to-deploy-hyperledger-fabric-network-from-scratch. Don't only run the steps. Analyze the files in https://github.com/blockchain-expert/hyperledger-fabric-network-from-scratch. Try playing with configtx.yaml, crypto-config.yaml and docker-compose files to customize your network and understand what you are doing.
Customize your organizations, your consortiums, your ordering service, your peers... Create your channels, join them, update your anchor peers... And understand what you are doing.
After that, if your network had one orderer, deploy a new one with more than one (with Raft consensus). If your network was using cryptogen, deploy a new one using Fabric-CAs instead. Or you can follow by playing with chaincodes.
NOTE: Apart from Hyperledger Fabric itself, it is essential to have basic notions of docker and PKI.
You are a beginner in Hypelredger fabric development then you have first cleared the concept of the orderer, peer, CA, and organization concept. And then first you have to start IBM Blockchain Platform VS Code extension for fabric. It will provide a local fabric environment to create, test and deploy a fabric smart contract. Also generate 1 peer, 1 orderer, 1 CA service under VS code environment.
Here is a link to start development with VS code extension.
Hope it will help you:)
hi #d3v9 start from here https://hyperledger-fabric.readthedocs.io/en/release-1.4/build_network.html. also you can find some great article on medium
I am new to hyperledger fabric so I started with the documentation.
Hyperledger Fabric Documentation: https://hyperledger-fabric.readthedocs.io
I found one more readthedocs which is explaining the fabric too.
https://openblockchain.readthedocs.io
What are the differences between them and which I should prefer as developer?
thanks
I think it is the same thing (They explain about Hyperledger Fabric), but the official docs of Hyperledger Fabric its more practical, you have the First Network tutorial, chaincode tutorials, etc, and the Open Fabric Docs its like more theorical.
OpenBlockchain is for Fabric 0.6, which is no longer being worked on.
Current solution :
1. I have single node running on Hyperledger.
2. I have deployed my car-auction application on it.
Solution looking for:
1. Monitoring the response time and execution time it takes when single transaction is performed?
Any suggestion is appreciable.
Thanks
The Hyperledger Caliper benchmarking tool should be able to help you.
If you are concerned about performance you should be aware of the future of Composer and be sure it is the right tool for your situation.
Hyperledger Caliper, https://www.hyperledger.org/projects/caliper,
supports multiple blockchain platforms, including Hyperledger Sawtooth and Hyperledger Fabric. So not only can one compare performance within the same platform, but can also compare performance between platforms.
Caliper was contributed by Huawei and is Apache2-licensed open source.
I have been working on hyperledger fabric for some time. But I don’t understand where hyperledger composer comes in place . I do understand that it helps in visualizing the logic and transaction. But what I don’t get is how do you integrate it with fabric network? what does it create? Is it chaincode if not then what?
The Compose runtime is chain code that executes the business network archive artefacts created by the end-user.
Perhaps this will help?
https://blog.selman.org/2017/07/08/getting-started-with-blockchain-development/
The tech answer is that Hyperledger Composer is an abstraction layer over Hyperledger Fabric.
The practical answer is that it is awesome. Think how Angular and hundreds of other frameworks make web programming easier.
It is a framework where you can write your blockchain in Javascript and specify your data objects in an easy to understand text file. Throw in some querying, ACL stuff and pathways to use some nice opensource tools that let you do things like generate a Web API automatically and play around in a web environment without installing anything.
We are using it for the Integra Ledger Legal blockchain. (www.integraledger.com). I just spent the day working in it.