So we are taking about PayPal
The online payment giant was one of the earliest adopters of NodeJS. During an overhaul of their account overview page, they decided to try building the page in Node at the same time as their usual Java development. The NodeJS version worked out so well, that they chose to use it in production and build all client-facing applications in Node going forward. That means that most of what you see in your account is running on Node.
IMPORTANT OBSERVATIONS OF THE PERFORMANCE TEST
Node.js Application witnessed more than double the requests per second as compared to the Java application.
Node.js App featured 35% lower response time as compared to the Java app.
Node.js pages were served 200ms faster than the Java based application.
Impressed by the performance, rapid development, ubiquity, and high flexibility perks of the Node.js framework, PayPal has actively migrated to Node.js development. Almost all customer facing web applications of PayPal are now based on Node.js development framework and Jeff Harrell recommends Node.js for your web or app development requirements.