config: reduced gunicorn backlog default to handle less connections per worker

configs/development.ini

@@ -80,6 +80,9 b' asyncore_use_poll = true'
 ; The maximum number of simultaneous clients. Valid only for gevent
 #worker_connections = 10
 
+; The maximum number of pending connections worker will queue to handle
+#backlog = 64
+
 ; Max number of requests that worker will handle before being gracefully restarted.
 ; Prevents memory leaks, jitter adds variability so not all workers are restarted at once.
 #max_requests = 1000

configs/production.ini

@@ -63,6 +63,9 b' worker_class = gevent'
 ; The maximum number of simultaneous clients per worker. Valid only for gevent
 worker_connections = 10
 
+; The maximum number of pending connections worker will queue to handle
+backlog = 64
+
 ; Max number of requests that worker will handle before being gracefully restarted.
 ; Prevents memory leaks, jitter adds variability so not all workers are restarted at once.
 max_requests = 1000