r4VP4

get l1gas-data for optimism with web3.py

from web3 import Web3

w3 = Web3(Web3.HTTPProvider('https://opt-mainnet.g.alchemy.com/v2/YOURAPIKEY'))
assert w3.isConnected()

tx_hash = '0x134b8e636baf60053503b5065b5493e5bdd2d67c0e760c265fcc79ef554be02f'

Overview

Syncing an Ethereum node is largely reliant on IOPS, I/O Per Second. Budget SSDs will struggle to an extent, and some won't be able to sync at all.

This document aims to snapshot some known good and known bad models.

For size, 2TB come recommended as of mid-2022. 1TB can work for now but is getting tight.

High-level, QLC and DRAMless are far slower than "mainstream" SSDs.

Overview

Geth (Go-Ethereum) as of July 2022 takes about 650 GiB of space on a fast/snap sync, and then grows by ~ 14 GiB/week with default cache, ~ 8 GiB/week with more cache.

This will fill a 1TB SSD in a few months, to the point where space usage should be brought down again with an offline prune.

There is an odd behavior with Geth 1.10.20 where initial DB size is large after sync until Geth has been restarted twice. This is expected to be fixed soon, possibly as soon as 1.10.21.

Happily, Geth 1.10.x introduces "snapshot offline prune", which brings it back down to about its original size. It takes roughly 4-6 hours to prune the Geth database, and this has to be done while Geth is not running.

Caveat that while several folx have used offline pruning successfully, there is risk associated with it. The two failure mode

README

Create a template service file at /etc/systemd/system/[email protected]. The template parameter will correspond to the name of target host:

[Unit]
Description=Setup a secure tunnel to %I
After=network.target

	"""
	there should be an instance with hardhat running at localhost port 8547
	"""
	import os

	from dotenv import load_dotenv
	from web3 import Web3
	from web3.types import RPCEndpoint

	load_dotenv()

	import concurrent.futures
	import logging
	import time
	from random import randrange
	from timeit import default_timer as timer

	import redis
	from redis_wrapper.definitions import REDIS_CONN0

	lredis: redis = redis.Redis(**REDIS_CONN0)

	// SPDX-License-Identifier: MIT

	pragma solidity >=0.6.6 <0.9.0;

	import "@chainlink/contracts/src/v0.6/interfaces/AggregatorV3Interface.sol";

	contract FundMe{

	mapping(address => uint256) public addressToAmountFunded;
	address[] public funders;

	// SPDX-License-Identifier: MIT

	pragma solidity >=0.6.6 <0.9.0;

	import "@chainlink/contracts/src/v0.6/interfaces/AggregatorV3Interface.sol";

	contract FundMe{

	mapping(address => uint256) public addressToAmountFunded;

	// SPDX-License-Identifier: MIT
	pragma solidity ^0.6.0;

	interface AggregatorV3Interface {

	function decimals()
	external
	view
	returns (
	uint8