Added config for number of gunicorn workers (#3351)

reflex/config.py

@@ -213,6 +213,9 @@ class Config(Base):
     # The worker class used in production mode
     gunicorn_worker_class: str = "uvicorn.workers.UvicornH11Worker"
 
+    # Number of gunicorn workers from user
+    gunicorn_workers: Optional[int] = None
+
     # Attributes that were explicitly set by the user.
     _non_default_attributes: Set[str] = pydantic.PrivateAttr(set())
 

reflex/config.pyi

@@ -70,6 +70,7 @@ class Config(Base):
     cp_web_url: str
     username: Optional[str]
     gunicorn_worker_class: str
+    gunicorn_workers: Optional[int]
 
     def __init__(
         self,
@@ -97,6 +98,7 @@ class Config(Base):
         cp_web_url: Optional[str] = None,
         username: Optional[str] = None,
         gunicorn_worker_class: Optional[str] = None,
+        gunicorn_workers: Optional[int] = None,
         **kwargs
     ) -> None: ...
     @property

reflex/utils/exec.py

@@ -217,8 +217,12 @@ def run_backend_prod(
     """
     from reflex.utils import processes
 
-    num_workers = processes.get_num_workers()
     config = get_config()
+    num_workers = (
+        processes.get_num_workers()
+        if not config.gunicorn_workers
+        else config.gunicorn_workers
+    )
     RUN_BACKEND_PROD = f"gunicorn --worker-class {config.gunicorn_worker_class} --preload --timeout {config.timeout} --log-level critical".split()
     RUN_BACKEND_PROD_WINDOWS = f"uvicorn --timeout-keep-alive {config.timeout}".split()
     app_module = f"reflex.app_module_for_backend:{constants.CompileVars.APP}"