优化交易的计算请求非常重要，以确保交易及时处理以及避免支付过多的优先费用。

有关请求最佳计算的更多信息， 请查看完整指南。您还可以在此详细指南中找到有关 使用优先费用的更多信息。

// import { ... } from "@solana/web3.js"

async function buildOptimalTransaction(
  connection: Connection,
  instructions: Array<TransactionInstruction>,
  signer: Signer,
  lookupTables: Array<AddressLookupTableAccount>,
) {
  const [microLamports, units, recentBlockhash] = await Promise.all([
    100 /* Get optimal priority fees - https://solana.com/developers/guides/advanced/how-to-use-priority-fees*/,
    getSimulationComputeUnits(
      connection,
      instructions,
      signer.publicKey,
      lookupTables,
    ),
    connection.getLatestBlockhash(),
  ]);

  instructions.unshift(
    ComputeBudgetProgram.setComputeUnitPrice({ microLamports }),
  );
  if (units) {
    // probably should add some margin of error to units
    instructions.unshift(ComputeBudgetProgram.setComputeUnitLimit({ units }));
  }
  return {
    transaction: new VersionedTransaction(
      new TransactionMessage({
        instructions,
        recentBlockhash: recentBlockhash.blockhash,
        payerKey: signer.publicKey,
      }).compileToV0Message(lookupTables),
    ),
    recentBlockhash,
  };
}

https://solana.com/zh/developers/cookbook/transactions/optimize-compute

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