Note
If you are new to the blockchain technology, taking our Introduction to Blockchain Technology self-paced course is highly recommended. Also, for a comprehensive coverage of blockchain development in Ethereum or mastering Solidity programming, taking our below self paced courses is highly recommended:
Recap
In our previous article (Review of Ethereum Options for Development and Testing), we discussed what Ethereum Options are for application development and testing.
In this article, we learn what Ethereum Chain Options are and how to use them.
Developer chain options
Developer chain options are the ones facing developers. There are two useful developer chain options:
- –dev
- –dev.period
By running –dev, a proof-of-authority network will be established. Notice that a prefunded account will be created and mining will be enabled automatically. The default block period will be 0, meaning mining is only enabled when the transaction is in a pending status. Sometimes, developers will save the trouble of creating their own local private chain from scratch by using the one developer mode provides. You can challenge yourself by setting up a private blockchain using the –dev flag. It will deepen your understanding of all the kinds of options supported by geth.
Let’s quickly check the fund in the predefined account using the following steps:
- You must be very familiar with the console by now. We will bring up the console with the following command:
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$ geth -dev console
- Then, we will double-check if this is the account we are interested in with the help of the following command:
eth.accounts ["0xcbb8c6537505837c43cc54f1440bcf988111ad91"]
- If we query interactively using the following command, we will find out the amount of ether
the 0xcbb8c6537505837c43cc54f1440bcf988111ad91 account is holding:
web3.fromWei(eth.getBalance(eth.coinbase), "ether") 1.15792089237316195423570985008687907853269984665640564039457584007913129639927e+59
From the result, we know that the account has been funded with
1.1579208923731619542357098500868790785326998466564056403945758
4007913129639927e+59 ether.
Next Article
In our next article (Review of Ethereum API and Console Options), we discuss Ethereum API and its console options.
This article is written in collaboration with Brian Wu who is a leading author of “Learn Ethereum: Build your own decentralized applications with Ethereum and smart contracts” book. He has written 7 books on blockchain development.
Resources
Free Webinars on Blockchain
Here is the list of our free webinars that are highly recommended:
- Hyperledger Fabric for system admin versus developers
- How to harness blockchain for environmental and corporate sustainability
- Review of Initial Coin Offering, Security Token Offering and asset tokenization use cases and best practices
- Hyperledger Fabric Deployment on Cloud
- Hyperledger Fabric for entrepreneurship- 21 blockchain business use cases
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Here is the list of our 10 free self-paced courses that are highly recommended:
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- Intro to Cybersecurity
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- Recorded Live Webinars and Classes
Self-Paced Blockchain Courses
If you like to learn more about Hyperledger Fabric, Hyperledger Sawtooth, Ethereum or Corda, taking the following self-paced classes is highly recommended:
- Intro to Blockchain Technology
- Blockchain Management in Hyperledger for System Admins
- Hyperledger Fabric for Developers
- Intro to Blockchain Cybersecurity
- Learn Solidity Programming by Examples
- Introduction to Ethereum Blockchain Development
- Learn Blockchain Dev with Corda R3
- Intro to Hyperledger Sawtooth for System Admins
Live Blockchain Courses
If you want to master Hyperledger Fabric, Ethereum or Corda, taking the following live classes is highly recommended:
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Articles and Tutorials on Blockchain Technology
If you like to learn more about blockchain technology and how it works, reading the following articles is highly recommended:
- History and Evolution of Blockchain Technology from Bitcoin
- Overview of Blockchain evolution and phases from Ethereum to Hyperledger
- Comprehensive overview and analysis of blockchain use cases in many industries
- Blockchain Crowdfunding Security Token or Initial Coin Offerings
- A beginner Guide to Blockchain Technology
- How Decentralized Peer-To-Peer Network Works
- How blocks are added to the blockchain
- How Public and Private Keys of Cryptography Work
- What Is A Cryptographic Hash Function
- How Digital Signature Works In Blockchain
- The role and types of consensus mechanism in blockchain
- How Proof-of-Work Consensus Works in Blockchain
- How Proof of Stake Consensus works in Blockchain
Articles and Tutorials on Ethereum and Solidity
If you like to learn more about blockchain development in Ethereum with Solidity, reading the following articles and tutorials is highly recommended:
- Review of Architecture and Components of Ethereum
- Comprehensive Blockchain Ethereum Developer Guide from Beginner to Advance Level
- How to Write Ethereum Smart Contracts with Solidity in 1 hour
- Review of Architecture and Components of Ethereum
- How Ethereum Manages Accounts
- How Ethereum Manages Transactions
- How Smart Contracts Work in Ethereum
- How Ether and Gas Work in Ethereum
- How Ethereum Virtual Machine works
- How address and wallet work in Ethereum
- How mining works in Ethereum
- List of Tools and Technologies in Ethereum Ecosystem
- Review of challenges in distributed systems
- Review of Cap Theorem in Distributed Systems
- Horizontal Scaling versus Vertical Scaling in Distributed Systems
- How to Scale up Ethereum Blockchain Applications
- Review of scaling solutions for Ethereum
- How to Manage Ethereum State Channel with Raiden
- How Plasma Chains Work in Ethereum
- How Sharding and Gasper work in Ethereum
- How Proof-of-Stack Consensus Works in Ethereum
- A roadmap for Implementing Ethereum 2.0
- How to work with Decentralized Data and Content Storage in Ethereum
- How Decentralized Messaging with Whisper Works in Ethereum
- Review of Infura for Ethereum Development
- Review of Infura Ethereum API
- How to Use Remix with Infura for Ethereum Development
- How Ethereum Client API Works
- How Ethereum IPFS Storage Works
- How to Install and Start Ethereum IPFS Storage
- How to Run Ethereum IPFS Storage
- How to Work with Ethereum Swarm Storage
- How to Install Ethereum Swarm Storage
- How to Handle Ethereum Messages with Whisper
- Review of Popular Ethereum Smart Contract Libraries
- Review of Private and Permissioned blockchain
- How to Set up a Local Private Ethereum Blockchain
- How to Run Geth on a Local Private Ethereum Blockchain
- How to Build a Local Private Ethereum Blockchain with Mining
- How to Run Geth on a Local Private Ethereum Blockchain with Mining
- How to Create an Account on a Local Private Ethereum Blockchain
- How to Use Ethereum Optional Flags with New Chains
- Review of Ethereum Options for Development and Testing
- Review of Ethereum Developer Chain Options
- Review of Ethereum API and Console Options
- Review of Ethereum Networking Options
- Review of Ethereum Transaction Pool Options
Articles and Tutorials on Hyperledger Family
If you like to learn more about blockchain development with Hyperledger, reading the following articles and tutorials is highly recommended:
- Introduction to Hyperledger Architecture, Projects, Tools and Libraries
- Complete Review of Hyperledger Fabric Architecture and Components
- Hyperledger Fabric for System Administers versus Developers
- How to use Prometheus and Grafana to monitor Hyperledger Fabric
- Blockchain Developer Guide- How to Install Hyperledger Fabric on AWS
- Blockchain Developer Guide- How to Install and work with Hyperledger Sawtooth
- Blockchain Developer Guide- How to Install Hyperledger Burrow on AWS
- Blockchain Developer Guide- How to Install Hyperledger Iroha on AWS
- Blockchain Developer Guide- How to Install Hyperledger Indy and Indy CLI on AWS
- Blockchain Developer Guide- How to Install Hyperledger Seth and Docker on AWS
- Blockchain Developer Guide- How to Configure Hyperledger Sawtooth Validator and REST API on AWS
- Blockchain Developer Guide- How to Build Transaction Processor as a Service and Python Egg for Hyperledger Sawtooth
- Blockchain Developer Guide- How to Deploy Ethereum Smart Contracts with Hyperledger Burrow
- Blockchain Developer Guide- How to Create Cryptocurrency Using Hyperledger Iroha CLI
- Blockchain Developer Guide- How to Explore Hyperledger Indy Command Line Interface
- Blockchain Developer Guide- Comprehensive Blockchain Hyperledger Developer Guide from Beginner to Advance Level
- Introduction to Hyperledger Sawtooth Blockchain Development
Articles and Tutorials on R3 Corda
If you like to learn more about blockchain development on Corda , reading the following articles and tutorials is highly recommended:
Articles and Tutorials on Other Blockchain Platforms
If you like to learn more about blockchain development in other platforms, reading the following articles and tutorials is highly recommended: