upsun · tylers-username · Oct 23, 2025 · Oct 8, 2025 · Oct 9, 2025
diff --git a/.upsun/config.yaml b/.upsun/config.yaml
@@ -69,7 +69,7 @@ applications:
 
         web:
             commands:
-                start: ".venv/bin/gunicorn main:app"
+                start: ".venv/bin/blackfire-python .venv/bin/gunicorn main:app"
             upstream:
                 socket_family: tcp
             locations:

diff --git a/backend/main.py b/backend/main.py
@@ -49,6 +49,16 @@ def create_app():
 CORS(app)
 
 if __name__ == "__main__":
+    try:
+        from blackfire_conprof.profiler import Profiler
+
+        # application_name will be auto-populated via PLATFORM_APPLICATION_NAME/BLACKFIRE_CONPROF_APP_NAME
+        # profiler.stop() will be called on app exit by default
+        profiler = Profiler()
+        profiler.start()
+    except Exception as err:
+        print(err)
+
     flask_environment = os.environ.get("FLASK_ENV", "local")
     enable_debug = flask_environment != "production"
     web_port = os.environ.get("PORT", 8000)

diff --git a/backend/pyproject.toml b/backend/pyproject.toml
@@ -7,6 +7,8 @@ requires-python = ">=3.12"
 dependencies = [
     "async-timeout==4.0.3",
     "black==24.4.0",
+    "blackfire>=1.20.33",
+    "blackfire_conprof>=1.2.5",
     "blinker==1.7.0",
     "boolean-py==4.0",
     "cachecontrol==0.13.1",

diff --git a/backend/scripts/start.sh b/backend/scripts/start.sh
@@ -1,3 +1,3 @@
 #!/usr/bin/env bash
 
-uv run gunicorn main:app
+uv run blackfire-python gunicorn main:app
diff --git a/backend/uv.lock b/backend/uv.lock