Erlang/OTP是一个主要版本，更新了新功能，相当多的改进，以及一些不兼容。

Erlang是一个结构化，动态类型编程语言，内建并行计算支持。最初是由爱立信专门为通信应用设计的，比如控制交换机或者变换协议等，因此非常适 合于构建分布式，实时软并行计算系统。

更新日志：

• compiler, stdlib:

  • New preprocessor macros ?FUNCTION_NAME, ?FUNCTION_ARITY

  • New preprocessor directives -error(Term) and -warning(Term) to cause a compilation error or warning, respectively.

• gen_statem a new state machine behavior

• mnesia_ext: plugin of external storage solutions to mnesia

• crypto: uses EVP interface in OpenSSL resulting in generally better performance and support for HW acceleration

• ssh: performance improvements, uses the new gen_statem behavior

• ssl: enhanced error log messages

• dialyzer: the support for maps is very much extended both the type specification syntax and the type analysis.

• erts:

  • erlang:open_port(spawn, ...) 3-5 times faster

  • tracing, extensive improvements (scalability, speed, match specifications on send/receive, support for lttng, ...)

  • dirty schedulers improved

  • per process configurable handling of message_queue

  • fast loading of multiple modules

  • max_heap_size process flag

• erts/kernel: Experimental support for Unix Domain Sockets Example: gen_udp:open(0, [{ifaddr,{local,"/tmp/socket"}}])

• and much more ....

详细更新列表请查看 http://www.erlang.org/download/otp_src_19.0.readme

下载地址：

• Source code (zip)

• Source code (tar.gz)