diff --git a/model-engine/model_engine_server/api/worker.py b/model-engine/model_engine_server/api/worker.py
index 945614da..d08113b5 100644
--- a/model-engine/model_engine_server/api/worker.py
+++ b/model-engine/model_engine_server/api/worker.py
@@ -1,5 +1,7 @@
 from uvicorn.workers import UvicornWorker
 
+# Gunicorn returns 503 instead of 429 when concurrency exceeds the limit, before adding rate limiting just increase the concurrency
+# We'll autoscale at target concurrency of a much lower number (around 50), and this just makes sure we don't 503 with bursty traffic
 CONCURRENCY_LIMIT = 1000