🔖 Release version 0.91.0

docs/en/docs/release-notes.md

@@ -3,6 +3,14 @@
 ## Latest Changes
 
 
+## 0.91.0
+
+### Upgrades
+
+* ⬆️ Upgrade Starlette version to `0.24.0` and refactor internals for compatibility. PR [#5985](https://github.com/tiangolo/fastapi/pull/5985) by [@tiangolo](https://github.com/tiangolo).
+    * This can solve nuanced errors when using middlewares. Before Starlette `0.24.0`, a new instance of each middleware class would be created when a new middleware was added. That normally was not a problem, unless the middleware class expected to be created only once, with only one instance, that happened in some cases. This upgrade would solve those cases (thanks [@adriangb](https://github.com/adriangb)! Starlette PR [#2017](https://github.com/encode/starlette/pull/2017)). Now the middleware class instances are created once, right before the first request (the first time the app is called).
+    * If you depended on that previous behavior, you might need to update your code. As always, make sure your tests pass before merging the upgrade.
+
 ## 0.90.1
 
 ### Upgrades

fastapi/__init__.py

@@ -1,6 +1,6 @@
 """FastAPI framework, high performance, easy to learn, fast to code, ready for production"""
 
-__version__ = "0.90.1"
+__version__ = "0.91.0"
 
 from starlette import status as status
 

fastapi/applications.py

@@ -87,7 +87,7 @@ class FastAPI(Starlette):
         ),
         **extra: Any,
     ) -> None:
-        self._debug: bool = debug
+        self.debug = debug
         self.title = title
         self.description = description
         self.version = version
@@ -144,7 +144,7 @@ class FastAPI(Starlette):
         self.user_middleware: List[Middleware] = (
             [] if middleware is None else list(middleware)
         )
-        self.middleware_stack: ASGIApp = self.build_middleware_stack()
+        self.middleware_stack: Union[ASGIApp, None] = None
         self.setup()
 
     def build_middleware_stack(self) -> ASGIApp:

pyproject.toml

@@ -39,7 +39,7 @@ classifiers = [
     "Topic :: Internet :: WWW/HTTP",
 ]
 dependencies = [
-    "starlette>=0.22.0,<0.24.0",
+    "starlette>=0.24.0,<0.25.0",
     "pydantic >=1.6.2,!=1.7,!=1.7.1,!=1.7.2,!=1.7.3,!=1.8,!=1.8.1,<2.0.0",
 ]
 dynamic = ["version"]