Zero-Downtime Deployments for High-Traffic E-Commerce

A 5-minute site outage during high-volume sales periods results in thousands of dollars in lost revenue. Atomic symlink deployments and Blue/Green target group shifts maintain 100% availability.

By Kenneth D'Silva • Reading Time: 37 min read • Category: Architecture & Cloud

Deployer PHP Atomic Symlink Script

<?php
// Deployer PHP Task for Atomic Symlink Swapping
namespace Deployer;

task('deploy:symlink', function () {
    run("ln -sfn {{release_path}} {{deploy_path}}/current");
});

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