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Definition: hotspot


(1) The range of a Wi-Fi network. See Wi-Fi hotspot.

(2) A network node that is processing at maximum capacity or is backlogged due to excessive transactions.

(3) The instructions in a program that are executed more than all the others. To improve performance, the hotspots are the routines that should be refined. A Java compiler aptly named Hotspot optimizes the parts of the program that are executed most frequently.

(4) (hot spot) An area with excessive heat in the datacenter. Hot spots are typically found near server racks that are not cooled properly. Contrast with "cold spot," which is an area that is too cool, often because it is near air conditioning vents.

(5) The part of a graphic or text on a Web page that serves as a link to a website, another page or a file. When the hotspot area is clicked or tapped, the link is executed. The more the hotspot occupies the entire area of the link, the easier it is to select. However, too often, the hotspot is only a small area within the link. See hypergraphic and image map.




The Hotspot Location
The hotspot comprises the actual pixels that the cursor makes contact with on the graphic. In this example, the hotspot does not occupy the entire image area, but when the cursor moves into the hotspot, the arrow switches to a hand.