As we all know, there is a concept of the impossible triangle in blockchain. Blockchain cannot take into account the three dimensions of scalability, security and decentralization at the same time. For any blockchain, it is possible to satisfy at most two of the dimensions at the same time. Since the birth of Ethereum, there is no doubt about its security and decentralization. However, its poor scalability (throughput of 15 transactions per second) has often caused network congestion and high handling fees. . The emergence of Layer 2 on Ethereum is to solve the scalability problem of ETH. In short, it is to increase the transaction speed of Ethereum. Vitalik, the co-founder of Ethereum, announced the start of promoting eth2.0. So far, the development process is still very slow. During this period, some developers have sought a compromise and second-best method, and Layer 2 solutions have emerged as the times require. —Try to migrate the transaction data processed by the Ethereum layer outside of Ethereum to improve transaction speed and load.
At present, everyone also has a common view that Layer 2 will be the most effective expansion solution before the arrival of ETH2.0. Although it is a compromise method, it has to be said that layer2 is developing rapidly. As of the time of publication, according to L2beat data, the overall lock-up volume of the second layer of Ethereum has reached 9.32 billion US dollars, and its rapid development momentum is evident. This article will briefly review the development history of Ethereum Layer 2 and the development status of existing projects, and briefly analyze the competitiveness and development prospects of each Layer 2 project from the technical, ecological and other dimensions.
