Description: Fetch size refers to the amount of data requested in a single fetch operation from a server. This concept is crucial in the realm of web performance optimization, as the size of the data being transferred can significantly impact page load speed and user experience. An appropriate fetch size can reduce wait times and improve the efficiency of web applications, while an excessive size can lead to delays and unnecessary resource usage. Managing fetch size involves balancing the amount of data requested with the need for information, ensuring that requests are minimized while maximizing the amount of useful data in each operation. This translates to better bandwidth utilization and reduced latency, which is especially important in various network conditions. In summary, fetch size is a key factor in web performance optimization, as it directly affects how quickly users can access information and the overall efficiency of online applications.