A multiuser game web site cloud application or networked database can have thousands of users all interacting at the same time. You need a powerful industrialstrength tool to handle the really hard problems inherent in parallel concurrent environments. You need Erlang. In this second edition of the bestselling Programming Erlang youll learn how to write parallel programs that scale effortlessly on multicore systems. Using Erlang youll be surprised at how easy it becomes to deal with parallel problems and how much faster and more efficiently your programs run. Thats because Erlang uses sets of parallel processesnot a single sequential process as found in most programming languages. Joe Armstrong creator of Erlang introduces this powerful language in small steps giving you a complete overview of Erlang and how to use it in common scenarios. Youll start with sequential programming move to parallel programming and handling errors in parallel programs and learn to work confidently with distributed programming and the standard ErlangOpen Telecom Platform OTP frameworks. You need no previous knowledge of functional or parallel programming. The chapters are packed with handson realworld tutorial examples and insider tips and advice and finish with exercises for both beginning and advanced users. The second edition has been extensively rewritten. New to this edition are seven chapters covering the latest Erlang features maps the type system and the Dialyzer WebSockets programming idioms and a new standalone execution environment. Youll write programs that dynamically detect and correct errors and that can be upgraded without stopping the system. Theres also coverage of rebar the de facto Erlang build system and information on how to share and use Erlang projects on github illustrated with examples from cowboy and bitcask. Erlang will change your view of the world and of how you program. What You Need The ErlangOTP system. Download it from erlang.org.