Rollups

Rollups (also known as blockchain rollups) are Layer 2 scaling solutions designed to increase the throughput and efficiency of blockchain networks by processing transactions off the main chain. They bundle multiple transactions into a single batch, which is then submitted to the main chain, reducing congestion and gas fees.

There are two primary types of rollups: optimistic rollups and zero-knowledge (zk) rollups. Optimistic rollups assume transactions are valid by default and only perform computations in case of a dispute, while zk-rollups generate cryptographic proofs to verify the correctness of each batch.

For web3 developers, utilizing rollups can significantly enhance the scalability and user experience of decentralized applications by offering faster and more cost-effective transactions.