Martin martin-mok

Use Multiple SSH Keys for Git host websites (Github, Gitlab)

This is guide about how to configure multiple SSH keys for some Git host websites such as Github, Gitlab, among others.

Creating SSH keys

Create SSH directory:

Theming Ant Design with Sass and Webpack

This is a solution on how to theme/customize Ant Design (which is written in Less) with Sass and webpack. Ant itself offers two solutions and a related article on theming, but these are only applicable if you use Less, the antd-init boilerplate or dva-cli.

What this solution offers:

use a single sass-file to customize (no duplicate variables for your project and Ant)
hot reload compatibility
no dependencies on outdated npm modules
easy integration with your existing webpack setup (webpack 3+ tested)

Fluent-bit rocks

A short survey of log collection options and why you picked the wrong one. 😜

Who am I? Where am I from?

I'm Steve Coffman and I work at Ithaka. We do JStor (academic journals) and other stuff. How big is it?

Number	what it means
101,332,633	unique visitors in 2017

Migrations & Seeding

What are migrations??

Migrations are a way to make database changes or updates, like creating or dropping tables, as well as updating a table with new columns with constraints via generated scripts. We can build these scripts via the command line using knex command line tool.

To learn more about migrations, check out this article on the different types of database migrations!

Creating/Dropping Tables

Installing Postgres via Brew

Pre-Reqs

Brew Package Manager

In your command-line run the following commands:

brew doctor
brew update

Upload images to GitHub

Create a new issue on GitHub.
Drag an image into the comment field.
Wait for the upload process to finish.
Copy the URL and use it in your Markdown files on GitHub.

Full socket.io client and server example

Last updated: 2021-02-21, tested with socket.io v3.1.1

This is the simplest implementation you will find for a client/server WebSockets architecture using socket.io.

To see a full explanation, read my answer on SO here: https://stackoverflow.com/a/24232050/778272.

If you're looking for examples using frameworks, check these links:

	apiVersion: v1
	kind: ConfigMap
	metadata:
	name: nginx-conf
	data:
	nginx.conf: \|
	user nginx;
	worker_processes 3;
	error_log /var/log/nginx/error.log;
	events {

	// A recursive function returning Promise<number>
	function recurseToZero(n) {
	console.log('B. Entering recursive function for [' + n + '].');
	// Once we hit zero, bail out of the recursion. The key to recursion is that
	// it stops at some point, and the callstack can be "rolled" back up.
	if (n === 0) {
	// We could just return 0 but we do return Promise.resolve to have a consistent return type
	return Promise.resolve(0);
	}
	// Start a NEW PROMISE CHAIN that will become the continuation of the parent

	'use strict';

	// Promisifies readline.question function using node native `util.promisify`
	// readline.question takes one callback that returns the answer, so it need custom promisifying

	const readline = require('readline');
	const { promisify } = require('util');

	readline.Interface.prototype.question[promisify.custom] = function(prompt) {
	return new Promise(resolve =>