Introduction

The Reimpact/platform project experienced production crashes due to out-of-memory (OOM) errors. These errors stemmed from the Horizon queue worker consuming excessive memory, particularly on smaller instance sizes.

The Challenge

The default configuration for Supervisor-2, responsible for managing Horizon workers, was allocating substantial memory per worker process.

When using Laravel Horizon, a queue monitoring tool, you might encounter issues with Content Security Policy (CSP) blocking inline scripts. Here's how to address it.

The Problem

Horizon serves its JavaScript and CSS inline using Horizon::js() and Horizon::css(). Without a proper nonce for CSP, browsers can block these inline scripts, even though Horizon's own authentication gate