What is the best thread pool size for a web application?

What is the best thread pool size for a web application?

The optimal thread pool size for a web application typically depends on the number of CPU cores and the nature of the tasks. A common rule of thumb is to set the pool size to the number of available cores plus one.

What if my application is I/O bound instead of CPU bound?

For I/O bound applications, you can increase the thread pool size significantly, often to 2-3 times the number of available cores, since threads will spend a lot of time waiting for I/O operations to complete.

Are there any tools to help me determine the right size?

Yes, you can use profiling tools like VisualVM or JConsole to monitor thread usage and performance, which can help you adjust the thread pool size effectively.

What about for a batch processing application?

For batch processing applications, the thread pool size can be set based on the expected workload and the nature of the tasks. It's often beneficial to experiment with different sizes to find the optimal configuration.