The ever-evolving sphere of blockchain has made scalability a huge concern. With the mainstream adoption of cryptocurrencies and decentralized apps, the limitations of traditional blockchains are coming to the surface. In this scenario, blockchain scaling layer 2 solutions have emerged as a promising alternative. Jump into this article to expand your knowledge about layer 2 solutions and their importance.
A Basic Understanding of Layer 2 Solutions
Two distinct methods are available for achieving scalability in the blockchain space. The first method involves introducing a new blockchain with improved block data, sharding, and consensus algorithm. This method can be referred to as L1 or layer 1 scaling.
But there’s another approach to scalability, which involves optimizing the way a blockchain ecosystem is used. A layer 2 protocol enables users to perform their operations off-chain instead of crowding the blockchain network with all activities. A smart contract is responsible for ensuring that the off-chain activities related to blockchain scalability layer 2 follow all the rules.
The Importance of Layer 2 Solutions for Blockchain Growth
Ethereum is currently among the most advanced blockchains in terms of reliability and network security. A lot of people and businesses choose to use this blockchain for projects or transactions. But the network gets more and more crowded as the volume of transactions rises.
Miners prioritize confirming transactions with larger gas prices to try to address this. However, the user bears the increased expenditures, which drives up the minimum gas fee, which occasionally surpasses the transaction value.
The layer 2 platforms for blockchain growth save the underlying network or mainnet from dealing with large volumes of data. The L2 solutions simply send the data to third-party processing channels, which makes only the final result appear on the L1 blockchain.
Benefits of L2 Solutions for Blockchain Growth
If you are wondering why layer 2 needed for blockchain scaling, go through the following advantages:
- L2 solutions can increase the number of transactions taking place per second to enhance user experience. Moreover, these solutions can eliminate congestion on the mainnet.
- L2 solutions enable transactions to be consolidated into a single package before they are recorded on the mainnet. As a result, the gas fees come down significantly.
- Layer 2 networks are also available for specific applications to optimize one particular aspect of the blockchain ecosystem.
- Layer 2 solutions are always built above the blockchain to enhance network security. Therefore, updating layer 2 solutions won’t alter the underlying blockchain.
Types of Layer 2 Solutions for Blockchain Scalability
The layer 2 blockchains mainstream adoption has been possible because the L2 solutions focus on driving transactions away from the mainnet. A large number of L2 projects came up within a short span to tackle the issue of congestion on the mainnet. However, the L2 solutions that managed to create a strong impact include:
- State Channels
A state channel acts as a two-way communication street between participants. State channels eliminate the need for a third party, like a miner, for the confirmation of transactions. This can improve transaction speed to a massive extent.
The process involving state channels begins with sealing off one portion of the blockchain using multi-signature. It helps with direct interaction without the need to present anything to the miners. The final state of the channel gets added to the blockchain after a confirmed transaction.
Bitcoin’s lightning network is an example of the state channel mechanism. This process for L2 blockchain scalability can help with the management of complex interactions. Moreover, it helps in tackling high transaction throughput at a minimal cost.
- Zero-Knowledge Rollups
Zero-knowledge rollups help in consolidating transactions moved out from the blockchain. It results in the creation of a validity proof called a SNARK. This cryptographic proof is the only record necessary on the blockchain. As a result, the gas fee associated with processing all the data is not present with zero-knowledge rollups.
- Optimistic Rollups
While zero-knowledge rollups rely on validity proofs, optimistic roll ups focus on fraud proofs. On layer 1, aggregators assume the data to be correct by publishing minimal data. As long as the transaction is valid, the main blockchain does not need to do anything. But when fraudulent transactions take place, the optimistic rollups can penalize the sender by performing a fraud check. Therefore, optimistic rollups are known for their high security with low gas fees and increased throughput.
Final Words
Layer 2 solutions have become the most common answer to growth and scalability issues in the blockchain ecosystem. With a growing focus on this technology, the future indicates greater adoption of L2 solutions along with lower transaction fees. While L2 solutions are an initial attempt to handle scalability issues on the blockchain, the solutions are going to become more effective in the future.
