Decentralized Applications Development Tutorials, Guides & Insights

• Rate Limits: Etherscan’s free tier limits the number of API requests per second (usually around 5 per second). This is fine for querying data but can be limiting for large-scale applications that need to process a lot of data quickly.
• Pricing: Etherscan offers paid tiers that increase the API request limits.

• Rate Limits: Infura’s free tier provides a generous number of requests (e.g., 100,000 requests per day) and supports more requests as you scale. This makes it more suitable for real-time dApps.
• Pricing: Infura’s paid plans offer higher limits and additional features like access to Layer 2 networks.

• ETH: Used for gas fees, transactions, and interacting directly with the Ethereum network.
• WETH: Primarily used within decentralized applications and protocols that require ERC-20 tokens, such as decentralized exchanges (e.g., Uniswap) or lending platforms.

• ETH can be wrapped into WETH and vice versa. There is no change in value—1 ETH always equals 1 WETH.

[dependencies]
anchor-lang = "0.22.0"
spl-token = "3.2.0" # Replace with the latest version

Run cargo update to install the dependencies.

2. Gnosis Safe

• Optimization: Gnosis Safe optimized their contract by minimizing storage writes and using efficient data structures like mappings and structs.
• Impact: These optimizations reduced the gas cost for executing multi-signature transactions, making the platform more accessible.

• Run truffle compile to compile the smart contract. This will generate the necessary ABI (Application Binary Interface) and bytecode.

• Start Ganache and configure Truffle to use it by editing the truffle-config.js file.
• Run truffle migrate to deploy the smart contract to the local blockchain provided by Ganache.