getRecentPerformanceSamplesの使用方法

# Replace <api-key> with your Helius API key
curl https://mainnet.helius-rpc.com/?api-key=<api-key> -X POST -H "Content-Type: application/json" -d \
  '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "getRecentPerformanceSamples",
    "params": [5]
  }'

// Replace <api-key> with your Helius API key
const { Connection } = require('@solana/web3.js');

async function fetchRecentPerformance() {
  const connection = new Connection('https://mainnet.helius-rpc.com/?api-key=<api-key>');
  try {
    const samples = await connection.getRecentPerformanceSamples(5);
    if (samples && samples.length > 0) {
      console.log(`Fetched ${samples.length} performance samples:`);
      samples.forEach((sample, index) => {
        console.log(`--- Sample ${index + 1} ---`);
        console.log(`  Slot: ${sample.slot}`);
        console.log(`  Number of Slots in Period: ${sample.numSlots}`);
        console.log(`  Total Transactions: ${sample.numTransactions}`);
        console.log(`  Non-Vote Transactions: ${sample.numNonVoteTransactions}`);
        console.log(`  Sample Period (seconds): ${sample.samplePeriodSecs}`);
        const tps = sample.numTransactions / sample.samplePeriodSecs;
        const nonVoteTps = sample.numNonVoteTransactions / sample.samplePeriodSecs;
        console.log(`  Average TPS (Total): ${tps.toFixed(2)}`);
        console.log(`  Average TPS (Non-Vote): ${nonVoteTps.toFixed(2)}`);
      });
    } else {
      console.log('No performance samples returned.');
    }
  } catch (error) {
    console.error('Error fetching recent performance samples:', error);
  }
}

fetchRecentPerformance();

# Replace <api-key> with your Helius API key
curl https://mainnet.helius-rpc.com/?api-key=<api-key> -X POST -H "Content-Type: application/json" -d \
  '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "getRecentPerformanceSamples"
  }'

// Replace <api-key> with your Helius API key
const { Connection } = require('@solana/web3.js');

async function fetchDefaultPerformanceSamples() {
  const connection = new Connection('https://mainnet.helius-rpc.com/?api-key=<api-key>');
  try {
    const samples = await connection.getRecentPerformanceSamples(); // No limit parameter
    if (samples && samples.length > 0) {
      console.log(`Fetched ${samples.length} (default) performance samples:`);
      // Process or log samples as needed - e.g., the first one
      const sample = samples[0];
      console.log(`--- Most Recent Sample ---`);
      console.log(`  Slot: ${sample.slot}`);
      console.log(`  Total Transactions: ${sample.numTransactions}`);
      console.log(`  Non-Vote Transactions: ${sample.numNonVoteTransactions}`);
      console.log(`  Slots in Period: ${sample.numSlots}`);
      console.log(`  Sample Period (seconds): ${sample.samplePeriodSecs}`);
    } else {
      console.log('No performance samples returned.');
    }
  } catch (error) {
    console.error('Error fetching default performance samples:', error);
  }
}

fetchDefaultPerformanceSamples();