Scaling in blockchain is a major issue. Public chains like Ethereum often sacrifice transaction speed and cost to ensure security and decentralization. Rollup technology increases transaction speed and reduces costs without losing decentralization. 'Follow for updates'
🎯 What is a Rollup?
Rollup is called 'aggregation' in Chinese. It bundles a large number of transactions 'off-chain' (Layer2) and only submits a summary result to the main chain (Layer1), significantly reducing the burden on the main chain. It's like ordering takeout with friends, where you only pay for delivery once after splitting the bill, which is both cheaper and more convenient.
👀 Categories:
Optimistic Rollup: Optimistically assumes that off-chain transactions are correct unless someone raises an objection (like Arbitrum, Optimism).
ZK Rollup: Uses zero-knowledge proofs to submit a cryptographic proof, which is automatically verified on-chain for validity (like zkSync, StarkNet).
🌟 Case Study:
Arbitrum: Currently, the TVL (Total Value Locked) exceeds $20 billion, primarily serving DeFi users, with transaction fees being dozens of times cheaper than Ethereum.
zkSync Era: Using zero-knowledge proofs, it operates at high speed and focuses on NFTs and DeFi, recently attracting many new users.
🎯 What are the benefits for newcomers?
Transactions are faster, saving money and hassle.
Easy to use: Most wallets (like MetaMask) have integrated these Layer2 networks, allowing you to switch and experience them directly.
In the future, Rollup will be a necessary option for scaling Ethereum and other public chains. Just like widening a crowded highway into multiple expressways, Rollup is making blockchains more suitable for everyday use.