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Spark support BSD sockets. It also have higher-level abstractions to directly deal with protocols like HTTP and FTP. To ease development of high-performance network servers without the overhead of one thread per client, it has an implementation of the ![[WWW]](http://wikispot.org/wiki/eggheadbeta/img/sycamore-www.png){kind=small}
Reactor Pattern. Each of these facilities are explained in the following sections.
