unicorn 6.0.0 - no more recycling Rack env
This release allocates a new Rack `env' hash for every request.
This is done for safety with internally-(thread|event)-using Rack
apps which expect to use `env' after the normal Rack response is
complete, but without relying on rack.hijack[1]. Thanks to
Dirkjan Bussink <d.bussink@gmail.com> for the patch:
https://yhbt.net/unicorn-public/
66A68DD8-83EF-4C7A-80E8-
3F1F7AB31670@github.com/
The major version is bumped since:
1) there are performance regressions for some simple Rack apps
2) unsupported 3rd-party monkey patches which previously
relied on this behavior may be broken (our version of
OobGC was).
The test suite is also more reliable on multi-core systems
and Ruby 3.x.
[1] thread from 2017 around rack.hijack safety:
https://yhbt.net/unicorn-public/CAAtdryPG3nLuyo0jxfYW1YHu1Q+ZpkLkd4KdWC8vA46B5haZxw@mail.gmail.com/