Phusion Passenger 发布 4.0 的第二个 RC 版本，我们知道很多用户期待 4.0 正式版很久了，但没版本，4.0 是一个包含很多改进的版本，因此我们必须进行充分的测试。
Phusion Passenger，原名 mod_rails ，是一个旨在从Apache和Nginx网页服务器上更便捷的部署Ruby on Rails项目的Apache模块。
与 RC1 版本相比，RC2 主要的改变有：
The Nginx version now supports the passenger_app_root configuration option.
The Enterprise memory limiting feature has been extended to work with non-Ruby applications as well.
Application processes that have been killed are now automatically detected within 5 seconds. Previously Phusion Passenger needed to send a request to the process before detecting that it’s gone. This change means that when you kill a process by sending it a signal, Phusion Passenger will automatically respawn it within 5 seconds (provided that the process limit settings allow respawning).
Phusion Passenger Standalone’s HTTP client body limit has been raised from 50 MB to 1 GB.
Python 3 support has been added.
The build system has been made compatible with JRuby and Ruby 2.0. This does not mean that Phusion Passenger works on Ruby 2.0; please read on for more about this subject.
The installers now print a lot more information about detected system settings so that the user can see whether something has been wrongly detected.
Some performance optimizations. These involve further extending the zero-copy architecture, and the use of hash table maps instead of binary tree maps.
Many potential crasher and freezer bugs have been fixed.
Error diagnostics have been further improved.
Many documentation improvements.
项目主页：https://www.phusionpassenger.com/
下载地址：https://www.phusionpassenger.com/download
来自:开源中国社区
