How Can I Tell Which Web End Server Is User Request Hitting?


Scott Campbell

Wondering how to determine which web end server a user request is hitting? Look no further!

In this article, we will explore different techniques to identify the web end server that handles incoming user requests. Let’s dive in and learn more.

Understanding Web End Servers

Before we can get into the methods of identifying the specific web end server, let’s first understand what a web end server is. In simple terms, a web end server is a component or machine that handles client requests and serves the requested content.

A typical web application architecture consists of multiple web servers working together to distribute the load and provide high availability. When a user sends a request to a website, it goes through different layers of servers before reaching the desired content.

Determining Web End Server

There are several approaches you can take to identify which web end server is handling a user request:

1. Server-Side Logging

The most straightforward method is to check the logs generated by your web servers. Most web servers record detailed information about incoming requests, including the IP address or hostname of the client making the request, along with other relevant data such as timestamps.

To identify which specific server handled a particular request, you can look for entries in your log files that match the request’s timestamp or any other unique identifier associated with each server.

2. Custom Headers

An alternative approach is to add custom headers to your HTTP responses. You can configure each web end server to include its own identifier in these headers when serving requests.

To implement this method, you need to modify your application code or web server configuration file to append a custom header with a unique value for each server. When inspecting the response headers received by the client, you can easily identify the web end server based on the custom header value.

3. Load Balancer Configuration

If you have a load balancer in your architecture, it is responsible for distributing incoming requests among multiple web end servers. Load balancers often include configuration options that allow you to insert specific headers or modify existing ones.

By configuring your load balancer to add a unique identifier header for each server, you can determine which server handled a request by inspecting the response headers received by the client.


Identifying the web end server that handles a user request is essential for troubleshooting, performance optimization, and understanding your application’s architecture. By leveraging techniques such as server-side logging, custom headers, or load balancer configuration, you can easily determine which specific server is serving your users’ requests.

Remember to keep track of any changes made to your application or infrastructure configuration to ensure accurate identification of web end servers in the future.

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