rails 可能是这个世界上缓存解决方案最全的框架了

请教各位，我们在用 emay 的接口，使用的专用通道 http 地址与 china_sms 提供的不一样，所以需要修改 URL 地址，感觉这样修有点暴力，求指导

   def use(service, options)
     @service = ChinaSMS::Service.const_get("#{service.to_s.capitalize}")
+    @service.const_set("URL", options[:base_uri]) if options[:base_uri]
     @username = options[:username]
     @password = options[:password]
   end

详细请看

https://github.com/roymax/china_sms/commit/d54d40483681f30e65a9f328bb4c078e7e9ff1e4m

参考http://astrails.com/blog/2012/11/13/rvm-install-patched-ruby-for-faster-rails-startup 加个参数竟然过了，-n falcon参数是什么意思？

rvm get head && rvm install 1.9.3 1.9.3-p327-falcon --patch falcon -n falcon

$ time rails runner "puts :OK"
OK
rails runner "puts :OK"  6.32s user 1.37s system 92% cpu 8.292 total

$ rvm use ruby-1.9.3-p327-falcon
$ time rails runner "puts :OK"  
OK
rails runner "puts :OK"  3.75s user 0.96s system 99% cpu 4.752 total

$ export RUBY_HEAP_MIN_SLOTS=1000000
$ export RUBY_HEAP_FREE_MIN=500000
$ export RUBY_HEAP_SLOTS_INCREMENT=1000000
$ export RUBY_HEAP_SLOTS_GROWTH_FACTOR=1
$ export RUBY_GC_MALLOC_LIMIT=100000000

$ time rails runner "puts :OK"            
OK
rails runner "puts :OK"  3.18s user 1.02s system 99% cpu 4.234 total

装不上，大家没用 clang?

Building 'ruby-1.9.3-p327-falcon' using clang - but it's not (fully) supported, expect errors.
Installing Ruby from source to: /Users/roymax/.rvm/rubies/ruby-1.9.3-p327-falcon, this may take a while depending on your cpu(s)...
ruby-1.9.3-p327-falcon - #downloading ruby-1.9.3-p327, this may take a while depending on your connection...
ruby-1.9.3-p327-falcon - #extracting ruby-1.9.3-p327 to /Users/roymax/.rvm/src/ruby-1.9.3-p327-falcon
ruby-1.9.3-p327-falcon - #extracted to /Users/roymax/.rvm/src/ruby-1.9.3-p327-falcon
Applying patch /Users/roymax/.rvm/patches/ruby/1.9.3/p327/falcon.diff
ruby-1.9.3-p327-falcon - #autoreconf
Error running 'autoreconf', please read /Users/roymax/.rvm/log/ruby-1.9.3-p327-falcon/autoreconf.log
ruby-1.9.3-p327-falcon - #configuring
Error running './configure --enable-shared --disable-install-doc --prefix=/Users/roymax/.rvm/rubies/ruby-1.9.3-p327-falcon --with-opt-dir=/Users/roymax/.rvm/usr', please read /Users/roymax/.rvm/log/ruby-1.9.3-p327-falcon/configure.log
There has been an error while running configure. Halting the installation.
Ruby 'ruby-1.9.3-p327-falcon' was built using clang - but it's not (fully) supported, expect errors.

@huacnlee 在rails_admin中设置Referenced 1-n 时，子 collection 的 _id 字段为空值

用 bash 一样也有自动补全，而且暂时不是很想转 zsh 上去