README: document $env support for reading Rack envmaster
authorEric Wong <normalperson@yhbt.net>
Thu, 14 Aug 2014 19:44:09 +0000 (19:44 +0000)
committerEric Wong <normalperson@yhbt.net>
Thu, 14 Aug 2014 19:44:09 +0000 (19:44 +0000)
commit3b02e6a8c745a92dab9186555c9ed0161ca8d8ea
tree738bf51090d03b29034400ff56501fafc1733157
parent8333454e7c95407b7d7eff5e8fbae0a2795b4d06
README: document $env support for reading Rack env

This is more portable across different servers than Thread.current
in case of non-blocking servers which may be serving multiple
clients at once.  This is also faster than relying on $e{...} since
$e{...} uses eval and that is slow.
README