"First come, first served" redirects here. For the Kool Keith album, see First Come, First Served. Queue networks are systems in which single queues are connected by a routing network. In this image, servers are represented by circles, queues by a series of rectangles and the routing network by arrows. In the study of queue networks one typically tries to obtain the equilibrium distribution of the
![Queueing theory - Wikipedia](https://cdn-ak-scissors.b.st-hatena.com/image/square/79b490d50d320c74a1493292183fc981c34430f2/height=288;version=1;width=512/https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2F2%2F2b%2FServidorParalelo.jpg)