@chonglianping5
Blockchain scalability issues arise from limited transaction throughput, high fees, and network congestion, particularly in networks like Ethereum. Layer 2 solutions, such as Rollups and sidechains, address these challenges by processing transactions off the main chain while leveraging its security. Rollups, including Optimistic and ZK-Rollups, bundle transactions into batches, reducing on-chain load and costs while maintaining data integrity. Sidechains operate as independent blockchains linked to the main chain, enabling faster, cheaper transactions but with potential security trade-offs. These solutions enhance scalability, lower latency, and reduce fees, making blockchain applications more efficient. However, trade-offs like centralization risks or interoperability challenges require careful consideration for widespread adoption.
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