bump up router threads from 40 to 50, task queue rate limits

router is hitting 100% CPU sustained during bursts right now, probably need to either rethink its architecture or just add another core soon :/

queue.yaml

@@ -12,7 +12,7 @@ queue:
 
 - name: webmention
   target: default
-  rate: 100/s
+  rate: 500/s
   max_concurrent_requests: 10
   retry_parameters:
     task_retry_limit: 2
@@ -21,8 +21,8 @@ queue:
 
 - name: receive
   target: default
-  rate: 100/s
-  max_concurrent_requests: 20
+  rate: 500/s
+  max_concurrent_requests: 40
   retry_parameters:
     task_retry_limit: 2
     min_backoff_seconds: 300
@@ -30,8 +30,8 @@ queue:
 
 - name: send
   target: default
-  rate: 100/s
-  max_concurrent_requests: 20
+  rate: 500/s
+  max_concurrent_requests: 10
   retry_parameters:
     task_retry_limit: 2
     min_backoff_seconds: 300

router.yaml

@@ -38,4 +38,4 @@ manual_scaling:
 # https://cloud.google.com/appengine/docs/flexible/python/runtime#application_startup
 # https://docs.gunicorn.org/en/latest/settings.html
 # TODO: try asyncio w/eventlet workers
-entrypoint: gunicorn --workers 1 --threads 40 -b :$PORT router:app
+entrypoint: gunicorn --workers 1 --threads 50 -b :$PORT router:app