How to limit per request memory usage in asp net


ASP.NET is a popular language used for developing web applications. One concern when developing web applications is managing usage. In this article, we will explore how to limit per request memory usage in ASP.NET.

Understanding Memory Usage in ASP.NET

Before we dive into limiting memory usage, let's first understand how memory is used in ASP.NET. When a request is made to an ASP.NET application, the application creates an instance of the web page or handler to process the request. This instance consumes memory to store the state of the request and any data required to process it.

ASP.NET uses a garbage collector to manage memory. The garbage collector periodically frees up memory by identifying and removing objects that are no longer in use. However, in some cases, the garbage collector may not be able to keep up with the memory demands of the application, leading to excessive memory usage.

Limiting Per Request Memory Usage

To limit per request memory usage in ASP.NET, we can use the MaxConcurrentRequestsPerCPU setting in the web.config file. This setting allows us to specify the maximum number of concurrent requests that can be processed by each CPU core.

Here is an example of how to configure the MaxConcurrentRequestsPerCPU setting:


In the above example, we have set the maxConcurrentRequestsPerCPU attribute to 10, means each CPU core can a maximum of 10 concurrent requests.

Additional Considerations

While limiting per request memory usage can help manage memory in ASP.NET applications, it is important to consider other factors that can impact memory usage. Here are a few additional considerations:

1. Optimize Code and Data Structures

efficient code and using optimized data structures can significantly reduce memory usage. Avoid unnecessary object allocations and that objects are properly disposed of when no longer needed.

2. Use Caching

Caching frequently accessed data can help reduce memory usage by avoiding the need to recreate objects or retrieve data from sources. ASP.NET provides various caching mechanisms that can be used to store and retrieve data .

3. Monitor and Analyze Memory Usage

Regularly monitor and analyze memory usage in your ASP.NET application. Use tools like performance profilers to identify memory leaks or areas of high memory usage. This will help you identify and address any memory-related issues.


Limiting per request memory usage is an important aspect of developing efficient and scalable ASP.NET applications. By configuring the MaxConcurrentRequestsPerCPU setting and considering other factors such as code optimization and caching, you can effectively manage memory usage in your ASP.NET applications.

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