update gunicorn to load from a .py file, tune max-requests

Author: ewdurbin

Procfile

@@ -1 +1 @@
-web: gunicorn -c gunicorn.conf -k aiohttp.worker.GunicornWebWorker conveyor.app:application
+web: gunicorn -c gunicorn.conf.py -k aiohttp.worker.GunicornWebWorker conveyor.app:application

README.md

@@ -27,7 +27,7 @@ python3 -m venv .state/venv
 .state/venv/bin/pip install -r requirements.txt
 export CONVEYOR_ENDPOINT=https://pypi.python.org
 export DOCS_BUCKET=pypi-docs
-.state/venv/bin/gunicorn -k aiohttp.worker.GunicornWebWorker conveyor.app:application
+.state/venv/bin/gunicorn -b 127.0.0.1:8000 -k aiohttp.worker.GunicornWebWorker conveyor.app:application
 ```
 
 ## Deployment

gunicorn.conf

@@ -0,0 +1,17 @@
+bind = "unix:/var/run/cabotage/cabotage.sock"
+backlog = 2048
+max_requests = 2048
+max_requests_jitter = 128
+
+worker_connections = 1000
+timeout = 60
+keepalive = 2
+
+errorlog = "-"
+loglevel = "info"
+accesslog = "-"
+access_log_format = '%(h)s %(l)s %(u)s %(t)s "%(r)s" %(s)s %(b)s "%(f)s" "%(a)s"'
+
+
+def when_ready(server):
+    open("/tmp/app-initialized", "w").close()