Functions as a service allow us to decouple development and deployment efforts more easily using containers or Kubernetes. However, there are additional complexities that arise when using a serverless architecture. Amazon simplifies the security, storage, and aggression components with their other servers very well.
Let's take a look at how we can set up a Lambda tied to a CloudFront distribution that points to our WordPress container. We will build a Lambda function that inspects the header of the request and sends it depending upon the information contained in that header.
First let's create our CloudFront Lambda file as cloudfront_lambda.js:
'use strict';
exports.handler = (event, context, callback) => {
const request = event.Records[0].cf.request;
const headers = request.headers;
if (request.uri !== '/index.html') {
// do not process if this is not an A-B test request
callback(null, request);
return;
}
const cookieExperimentA...