Erlang/OTP v19.3 發布

OTP 是包裝在Erlang中的一組庫程序。OTP構成Erlang的行為機制（behaviours），用于編寫服務器、有限狀態機、事件管理器。不僅如此，OTP的應用行為（the application behavior）允許程序員把寫好的Erlang代碼打包成一個單獨的應用程序；監測行為（the supervisor behavior ）允許程序員創建有層次結構的進程，使得某個進程死后，會重新啟動復活。

OTP提供大量通用的庫程序，用以輕松創建具有高度容錯、熱機換碼等功能的高質高效的程序。主要特點：

• 通用服務器、有限狀態機、事件管理器；
• 標準化應用程序結構；
• 代碼熱機更換；
• 監測樹行為機制，讓你的進程永不停擺。

更新日志

• crypto, ssh: The implementation of the key exchange algorithms diffie-hellman-group-exchange-sha* are optimized, up to a factor of 11 for the slowest ( = biggest and safest) group size.
• dialyzer: The peak memory consumption is reduced. Analyzing modules with binary construction with huge strings is now much faster.
• erts: A received SIGTERM signal to beam will generate a 'stop' message to the init process and terminate the Erlang VM nicely. This is equivalent to calling init:stop/0.
• kernel: The functions in the file module that take a list of paths (e.g. file:path_consult/2) will now continue to search in the path if the path contains something that is not a directory.
• kernel: Two OTP processes that are known to receive many messages are rex (used by rpc) and error_logger.Those processes will now store unprocessed messages outside the process heap, which will potentially decrease the cost of garbage collections.
• public_key: New function pkix_verify_hostname/2,3 implements certificate hostname checking. See the manual and RFC 6125.
• public_key, ssh: The ssh host key fingerprint generation now also takes a list of algorithms and returns a list of corresponding fingerprints. See  public_key:ssh_hostkey_fingerprint/2 and the option silently_accept_hosts in ssh:connect.
• ssl: Move PEM cache to a dedicated process, to avoid making the SSL manager process a bottleneck. This improves scalability of TLS connections.
• stdlib: filename:safe_relative_path/1 to sanitize a relative path has been added.Thanks to more than 20 different contributors

下載

• Source code (zip)
• Source code (tar.gz)

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本文轉自：深度開源（open-open.com）
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