From a8ce74b29be7e622dc0bc4a26ac04fa474e360a3 Mon Sep 17 00:00:00 2001
From: Kenneth Reitz <me@kennethreitz.com>
Date: Thu, 30 Jan 2014 12:14:18 -0500
Subject: [PATCH 1/3] Honor $WEB_CONCURRENCY environment variable.

Allows for changing concurrency configuration without changing
application code. This is an environment variable that other
communities (e.g. Rails) are starting to follow, and have enjoyed for a
little while now.

Have discussed with /cc @benoitc in the past and he was +1
---
 gunicorn/config.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gunicorn/config.py b/gunicorn/config.py
index cf8144e3..2d8d73ac 100644
--- a/gunicorn/config.py
+++ b/gunicorn/config.py
@@ -98,7 +98,8 @@ class Config(object):
 
     @property
     def workers(self):
-        return self.settings['workers'].get()
+        env_workers = int(os.environ.get('WEB_CONCURRENCY'))
+        return self.settings['workers'].get() or env_workers
 
     @property
     def address(self):

From 64144c732fe370731c22421d135289b01059d3cd Mon Sep 17 00:00:00 2001
From: Kenneth Reitz <me@kennethreitz.com>
Date: Thu, 6 Feb 2014 11:44:52 -0800
Subject: [PATCH 2/3] Use $WEB_CONCURRENCY environment variable for default
 workers value

---
 gunicorn/config.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/gunicorn/config.py b/gunicorn/config.py
index 2d8d73ac..ee10b9a5 100644
--- a/gunicorn/config.py
+++ b/gunicorn/config.py
@@ -98,8 +98,7 @@ class Config(object):
 
     @property
     def workers(self):
-        env_workers = int(os.environ.get('WEB_CONCURRENCY'))
-        return self.settings['workers'].get() or env_workers
+        return self.settings['workers'].get()
 
     @property
     def address(self):
@@ -508,7 +507,7 @@ class Workers(Setting):
     meta = "INT"
     validator = validate_pos_int
     type = int
-    default = 1
+    default = int(os.environ.get('WEB_CONCURRENCY', 1))
     desc = """\
         The number of worker process for handling requests.
 

From 2b3f63601b9a8f3e6a0442b0a48eeb4c3e946e73 Mon Sep 17 00:00:00 2001
From: Randall Leeds <randall@bleeds.info>
Date: Fri, 14 Feb 2014 15:12:21 -0800
Subject: [PATCH 3/3] Add documentation for WEB_CONCURRENCY

---
 gunicorn/config.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gunicorn/config.py b/gunicorn/config.py
index ee10b9a5..5b3a56fb 100644
--- a/gunicorn/config.py
+++ b/gunicorn/config.py
@@ -514,6 +514,9 @@ class Workers(Setting):
         A positive integer generally in the 2-4 x $(NUM_CORES) range. You'll
         want to vary this a bit to find the best for your particular
         application's work load.
+
+        By default, the value of the WEB_CONCURRENCY environment variable. If
+        it is not defined, the default is 1.
         """