Jeremy Venezia jvenezia

Close All Notifications on macOS with a Keyboard Shortcut

This tutorial explains how to create a custom keyboard shortcut to close all macOS notifications using Automator and System Settings.

Step 1: Open Automator

Open Automator (use Spotlight Search or find it in Applications).
In the window that appears, select Quick Action as the document type.

Sizing your Rails application with Unicorn on Heroku

This tutorial assumes you are running a Rails application on Heroku with a Unicorn server. However, if you are not using one of those you will find some general information which can help you in your context.

This article will help you to correctly configure your Unicorn server based on real data.

I recommend you to use New Relic, which is really easy to setup with Rails & Heroku. It will help you monitoring your application and configure it at its best.

Using Unicorn Web Server

Rails mailer structure

Your application is growing, and you are starting to have a complex mailing system: notification emails, retention emails, misc user emails, admin emails, etc...

It's time to clean up your mailers !

Existing mailer

You may already have a single mailer, responsible of every emails, like this one:

Migrating an Heroku Application to another

The usecase here is to migrate an Heroku Application to Heroku Europe, and minimise downtime.

The heroku documentation on this subject is quite complete.
It is recommanded to read it if you are planning a migration.
https://devcenter.heroku.com/articles/app-migration

Process

In this guide, sourceapp is the original (source) app and targetapp is the migrated (target) app.

	FROM apache/airflow:2.2.0

	USER root

	ENV DEBIAN_FRONTEND=noninteractive \
	TERM=linux \
	AIRFLOW_GPL_UNIDECODE=yes

	RUN apt-get -y update \
	&& apt-get -y install python-pip libpq-dev postgresql-client python3-dev python3-distutils python3-apt

	#!/bin/bash

	# This way you can customize which branches should be skipped when
	# prepending commit message.
	if [ -z "$BRANCHES_TO_SKIP" ]; then
	BRANCHES_TO_SKIP=(master develop test)
	fi

	BRANCH_NAME=$(git symbolic-ref --short HEAD)
	BRANCH_NAME="${BRANCH_NAME##*/}"

	HEROKU_APP = ARGV[0]
	raise 'Heroku application name argument is missing. (e.g. \'ruby lib/tasks/teamcity/heroku/deploy.rb elcurator-staging\')' unless HEROKU_APP

	HEROKU_GIT_URL = "[email protected]:#{HEROKU_APP}.git"
	TEMP_DIFF_REMOTE = 'temp_diff_remote'

	# Check if there is migrations to run
	puts `git remote add #{TEMP_DIFF_REMOTE} #{HEROKU_GIT_URL}`
	puts `git fetch #{TEMP_DIFF_REMOTE}`
	there_is_migrations_to_run = !`git diff HEAD #{TEMP_DIFF_REMOTE}/master db/migrate`.empty?