Most web applications are hosted behind a load balancer or web-server such as Nginx/HTTPD, which intercepts all the requests and directs dynamic content requests to the application server, such as Tomcat. Correlating requests traversing from the front-end server to the backend servers are general requirements. In this post, we will discuss tracing the request in the simplest way in an Nginx and Spring Boot-based application without using an external heavyweight library like Slueth.