UNDERSTANDING PARALLELIZATION

Summary from the TLDR Crypto newsletter

Solana's use of parallelization in both transaction processing and block propagation increases throughput as it successfully simultaneously runs multiple processes. This method was not commonly used in earlier blockchains like Ethereum. Solana achieves efficiency by requiring transactions to specify which blockchain resources they access, while other blockchains like Ethereum use “optimistic parallelization”, which processes everything in parallel and addresses conflicts afterward.