How do I implement blue/green deployments for Cloud providers overview?

Blue/Green deployments are a strategy for rolling out application updates while minimizing downtime and reducing risks for production environments. This method involves maintaining two identical production environments, referred to as "blue" and "green", allowing for a seamless transition between the two during deployment.

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Example of Blue/Green Deployment

<?php // Step 1: Create and configure infrastructure for Blue and Green environments $blueEnvironment = 'my-app-blue'; $greenEnvironment = 'my-app-green'; // Step 2: Deploy the new version to the Green environment deployToEnvironment($greenEnvironment, 'new-version'); // Step 3: Run tests on the Green environment to ensure stability if (runHealthChecks($greenEnvironment)) { // Step 4: Redirect traffic from Blue to Green switchTraffic($blueEnvironment, $greenEnvironment); echo "Traffic switched to " . $greenEnvironment; } else { echo "Health checks failed. Traffic remains on " . $blueEnvironment; } function deployToEnvironment($environment, $version) { // Code to deploy the version to the specified environment } function runHealthChecks($environment) { // Code to run health checks on the specified environment return true; // Assume health checks passed for this example } function switchTraffic($oldEnv, $newEnv) { // Code to switch traffic from old environment to new environment } ?>

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