Cardano is the most optimized chain for parallel processing. Even Ethereum Layer 2s are now emerging based on a UTXO model similar to Cardano. Most EVMs, including Ethereum, have a highly inefficient structure for parallel processing. This is because it's a structure where all transactions must sequentially access and modify a single, shared global state. A well-known technology proposed to implement parallel processing on this structure is Block-STM. Block-STM is an optimistic concurrency model used by @Aptos. Although chains like Aptos are said to have superior parallel processing technology, in reality, they haven't solved this inefficient structure but have merely created a workaround. In simple terms, this technology is like an 'execute first, validate later' approach, where all transactions are run in parallel initially, and only those where a conflict is detected are re-processed afterward. Fundamentally, the account model, unlike the UTXO model, is very difficult to...
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