Potential Incompatibilities
- All Corba applications are now moved from the OTP repository
- A new Corba repository will be created https://github.com/erlang
- New applications ftp and tftp, moved from inets
- ssl no longer supports 3_DES cipher suites or RSA-key exchange
cipher suites by default
- Erlang:monitor on a primitive node (erl_interface, jinterface, etc)
will no longer fail with badarg exception. Instead a monitor will be
created, but it will only supervise the connection to the node.
Erts:
- Enhanced IO scalability
- Support for usage of distribution controller processes for
alternative transports, routing etc
- compact instructions on 64bit systems for code below 4GB 20% less
memory for loaded code
- Rewrite of the efile-driver with NIFs and "Dirty schedulers"
resulting in faster file operations
- non-smp VM removed
- link and monitor optimized for scalability
- os:getenv/putenv now work on thread-safe emulation. No longer in
sync with libc getenv(3). Manual synchronization will be needed.
Compiler:
- Misc compiler optimizations including contributions from the Elixir
team resulting in 10% improvements in benchmarks
- "Tuple calls" have been removed from the run-time system.
- Code such as f({ok, Val}) -> {ok, Val} is now automatically
rewritten to f({ok, Val} = Tuple) -> Tuple. this reduces code size,
execution time, and removed GC pressure.
- More information in stacktrace from a number of operators
- erlang:get_stacktrace/0 deprecated to be replaced with try ... catch
C:R:Stacktrace -> ...
- Creation of small maps with literal keys optimized.
- A new predefined macro OTP_RELEASE and preprocessor directives -if
and -elif
Security:
- DTLS is now supported in the SSL application
- Enhanced support for distribution over TLS
- "unsecure" ciphers removed from defaults in SSL and SSH.
- A new option value defined to facilitate implementing exec servers.
Old option kept for compatibility, but now gives errors on stderror.
Standard libraries:
- New API for logging, logger
- New uri_string module for parsing URIs according to "The standard"
- New function lists:search(list,fun/1) -> {ok, Value} | false
- Changed default behaviour of .erlang loading. escript, erlc,
dialyzer and typer no longer load an .erlang at all.
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