Raz tzumby

PostgreSQL is Enough

Background and Cron Jobs

Overview

Syncing an Ethereum node is largely reliant on latency and IOPS, I/O Per Second, of the storage. Budget SSDs will struggle to an extent, and some won't be able to sync at all. IOPS can roughly be used as proxy of / predictor for latency. Measuring latency directly is arguably better.

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

The drive lists are ordered by interface and then by capacity and alphabetically by vendor name, not by preference. The lists are not exhaustive at all. @mwpastore linked a filterable spreadsheet in comments that has a far greater variety of drives and their characteristics. Filter it by DRAM yes, NAND Type TLC, Form Factor M.2, and desired capacity.

For size, 4TB is a very conservative choice. The smaller 2TB drive should last an Ethereum full node until at least sometime 2026, with [pre-merge history expiry](https://hackmd.io/@hBXHLw_9Qq2va4pRtI4bI

Questions

Company

company location / remote?
what project management method?
good and bad company culture?
performance reviews?
what's the path to profitability?

Guide: Run FreeBSD 13.1-RELEASE for ARM64 in QEMU on Apple Silicon Mac (MacBook Pro M1, etc) with HVF acceleration (Hypervisor.framework)

This guide was adapted from https://gist.github.com/niw/e4313b9c14e968764a52375da41b4278#running-ubuntu-server-for-arm64

Running FreeBSD 13.1-RELEASE for ARM64

Install Xcode from App Store or install Command Line Tools on your Mac running on Apple Silicon.

How develop a Safe module

Add dependencies

yarn add @gnosis.pm/safe-contracts
Optional for testing
- yarn add eth-lightwallet

Genomics - A programmer's guide.

Andy Thomason is a Senior Programmer at Genomics PLC. He has been witing graphics systems, games and compilers since the '70s and specialises in code performance.

https://www.genomicsplc.com

58 bytes of CSS to look great nearly everywhere

When making this website, i wanted a simple, reasonable way to make it look good on most displays. Not counting any minimization techniques, the following 58 bytes worked well for me:

main {
  max-width: 38rem;
  padding: 2rem;
  margin: auto;
}

Tested with Phoenix 1.3

1) Installing sass, font-awesome and bootstrap package's using Brunch

First, install the Sass, Font Awesome, bootstrap(and deps) package:

cd assets

npm install --save-dev sass-brunch
npm install --save font-awesome

	defmodule Example.Application do
	@moduledoc false

	use Application

	def start(_type, _args) do
	children = [
	Example.Repo,
	ExampleWeb.Telemetry,
	{Phoenix.PubSub, name: Example.PubSub},

	defmodule RepoStream do
	defmodule Producer do
	use GenStage

	defstruct [:demand, :pid]

	def start_link() do
	GenStage.start_link(__MODULE__, self())
	end