Stephan stephan-v

Laravel Horizon, redis-server, supervisord on Ubuntu 20/22/24 server

Laravel 10+, Horizon 5.x, Redis/Valkey 7+

Prepare application

Install and configure Laravel Horizon as instructed in docs
Make sure you can access the Horizon dashboard like - http://yourapp.com/horizon
For now; it should show status as inactive on horizon dashboard

Implementing State Machine On Eloquent Model*

* Update (12.09.2017): I have improved the trait so that it can be used with objects other than Eloquent Models.

Some days ago I came across a task where I needed to implement managable state for an Eloquent model. This is a common task, actually there is a mathematical model called "Finite-state Machine". The concept is that the state machine (SM) "can be in exactly one of the finite number of states at any given time". Also changing from one state to another (called transition) depends on fulfilling the conditions defined by its configuration.

Practically this means you define each state that the SM can be in and the possible transitions. To define a transition you set the states on which the transition can be applied (initial conditions) and the only state in which the SM should be after the transition.

That's the theory, let's get to the work.

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

URL	HTTP Verb	Action
/photos/	GET	index
/photos/new	GET	new
/photos	POST	create
/photos/:id	GET	show
/photos/:id/edit	GET	edit
/photos/:id	PATCH/PUT	update
/photos/:id	DELETE	destroy

	sudo add-apt-repository ppa:pinepain/libv8-5.2
	sudo apt-get update
	sudo apt-get install libv8-5.2
	sudo pecl install v8js
	sudo su
	echo "extension=v8js.so" >> /etc/php/7.1/fpm/php.ini
	echo "extension=v8js.so" >> /etc/php/7.1/cli/php.ini
	exit
	sudo service nginx restart && sudo service php7.1-fpm restart

	#!/bin/sh

	# Import a large sql dump file to a MySQL database from command line
	# https://cmanios.wordpress.com/2013/03/19/import-a-large-sql-dump-file-to-a-mysql-database-from-command-line/

	# store start date to a variable
	imeron=`date`

	echo "Import starting..."
	dumpfile="/path/to/dumpfile.sql"

	# The idea of this deployment script is to create a deploy copy of your website and handle
	# Git and Composer updates in there. Aferwards, it just renames that deploy copy to become the
	# live website. We then run the database migrations and take the application out of maintenance mode.

	# Obviously, you will have to replace all instances of {{ websiteName }} with the name of your website and
	# {{ branchName }} with the name of the branch you would like to pull changes from. This is usually the master branch.

	# Start by checking for for old deployment folder and remove it if we have one.
	if [ -d "/home/forge/{{ websiteName }}-deploy" ]; then
	rm -Rf /home/forge/{{ websiteName }}-deploy

	#!/bin/bash

	SCHEMA="support_mozilla_com.2013.07.17.schema.sql"
	DATA="support_mozilla_com.2013.07.17.data.sql"
	SIZE="$(du $DATA \| awk '{ print $1 }')K"
	DBNAME="kitsune"

	{
	echo "Dropping/creating database ${DBNAME}" >&2
	echo "DROP DATABASE IF EXISTS ${DBNAME};"

	#!/bin/bash
	# A shell script to restore a large SQL dump using root login.
	# Usage: ./restore_dump.sh dump.sql app_devdb
	#
	# Author: Michael de Silva ([email protected] / http://github.com/bsodmike)

	(( $# != 2 )) && { echo "Usage: $0 dump.sql database_name"; exit 1; }
	[ ! -f $1 ] && { echo "$1 not found1"; exit 1; }

	RESULT=`mysql -u root -p --skip-column-names -e "SHOW DATABASES LIKE '$2'"`

	# Assuming an Ubuntu Docker image
	$ docker run -it <image> /bin/bash