December 02, 2015 High-Concurrency HTTP Clients on the JVM By Fabio HTTP is probably the most popular application-level protocol and there are many libraries that implement it on top of network I/O, which is a special (stream-oriented) case of general I/O. Since all I/O has a much in common 1, let’s start with some discussion about it. I’ll concentrate on I/O cases with a lots of concurrent HTTP r