From f203d231941f9477ac7e52378fb9614668fc87b9 Mon Sep 17 00:00:00 2001
From: Charles Perrot-Minot
 <112571330+CharlesPerrotMinotHCHB@users.noreply.github.com>
Date: Sun, 12 May 2024 22:57:14 -0700
Subject: [PATCH 1/4] Switch from on_event to lifespan asynccontextmanager

on_event is now deprecated, and to be replaced with lifespan: https://fastapi.tiangolo.com/advanced/events/
---
 README.md | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index 9950c69..388b17e 100644
--- a/README.md
+++ b/README.md
@@ -51,6 +51,9 @@ or
 ### Quick Start
 
 ```python
+from collections.abc import AsyncIterator
+from contextlib import asynccontextmanager
+
 from fastapi import FastAPI
 from starlette.requests import Request
 from starlette.responses import Response
@@ -74,12 +77,11 @@ async def get_cache():
 async def index():
     return dict(hello="world")
 
-
-@app.on_event("startup")
-async def startup():
+@asynccontextmanager
+async def lifespan(_: FastAPI) -> AsyncIterator[None]:
     redis = aioredis.from_url("redis://localhost")
     FastAPICache.init(RedisBackend(redis), prefix="fastapi-cache")
-
+    yield
 ```
 
 ### Initialization

From 5ba03ca6f585c5c96e15678ed950ef38dfe3bfd4 Mon Sep 17 00:00:00 2001
From: Nik Stuckenbrock <privat@nikstuckenbrock.de>
Date: Fri, 19 Jul 2024 15:07:23 +0200
Subject: [PATCH 2/4] Correct example in README.md

---
 README.md | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/README.md b/README.md
index 388b17e..77f2f7e 100644
--- a/README.md
+++ b/README.md
@@ -64,7 +64,15 @@ from fastapi_cache.decorator import cache
 
 from redis import asyncio as aioredis
 
-app = FastAPI()
+
+@asynccontextmanager
+async def lifespan(_: FastAPI) -> AsyncIterator[None]:
+    redis = aioredis.from_url("redis://localhost")
+    FastAPICache.init(RedisBackend(redis), prefix="fastapi-cache")
+    yield
+
+
+app = FastAPI(lifespan=lifespan)
 
 
 @cache()
@@ -76,12 +84,6 @@ async def get_cache():
 @cache(expire=60)
 async def index():
     return dict(hello="world")
-
-@asynccontextmanager
-async def lifespan(_: FastAPI) -> AsyncIterator[None]:
-    redis = aioredis.from_url("redis://localhost")
-    FastAPICache.init(RedisBackend(redis), prefix="fastapi-cache")
-    yield
 ```
 
 ### Initialization

From 63f9bdd068ff2d475e6005386aa3d699b9288099 Mon Sep 17 00:00:00 2001
From: Nik Stuckenbrock <privat@nikstuckenbrock.de>
Date: Fri, 19 Jul 2024 15:08:43 +0200
Subject: [PATCH 3/4] Fix in memory example

---
 examples/in_memory/main.py | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/examples/in_memory/main.py b/examples/in_memory/main.py
index ac2c5dc..c43dce3 100644
--- a/examples/in_memory/main.py
+++ b/examples/in_memory/main.py
@@ -1,5 +1,6 @@
 # pyright: reportGeneralTypeIssues=false
-from typing import Dict, Optional
+from contextlib import asynccontextmanager
+from typing import AsyncIterator, Dict, Optional
 
 import pendulum
 import uvicorn
@@ -11,7 +12,13 @@ from pydantic import BaseModel
 from starlette.requests import Request
 from starlette.responses import JSONResponse, Response
 
-app = FastAPI()
+@asynccontextmanager
+async def lifespan(_: FastAPI) -> AsyncIterator[None]:
+    FastAPICache.init(InMemoryBackend())
+    yield
+
+
+app = FastAPI(lifespan=lifespan)
 
 ret = 0
 
@@ -119,10 +126,5 @@ def namespaced_injection(
     }
 
 
-@app.on_event("startup")
-async def startup():
-    FastAPICache.init(InMemoryBackend())
-
-
 if __name__ == "__main__":
     uvicorn.run("main:app", reload=True)

From 552d54c1ca98c26e91a395562b02c27793a69fde Mon Sep 17 00:00:00 2001
From: Nik Stuckenbrock <privat@nikstuckenbrock.de>
Date: Fri, 19 Jul 2024 15:09:39 +0200
Subject: [PATCH 4/4] Fix redis example

---
 examples/redis/main.py | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/examples/redis/main.py b/examples/redis/main.py
index c9a4f7c..bfae058 100644
--- a/examples/redis/main.py
+++ b/examples/redis/main.py
@@ -1,5 +1,7 @@
 # pyright: reportGeneralTypeIssues=false
+from contextlib import asynccontextmanager
 import time
+from typing import AsyncIterator
 
 import pendulum
 import uvicorn
@@ -17,7 +19,15 @@ from starlette.responses import JSONResponse, Response
 import redis.asyncio as redis
 from redis.asyncio.connection import ConnectionPool
 
-app = FastAPI()
+@asynccontextmanager
+async def lifespan(_: FastAPI) -> AsyncIterator[None]:
+    pool = ConnectionPool.from_url(url="redis://redis")
+    r = redis.Redis(connection_pool=pool)
+    FastAPICache.init(RedisBackend(r), prefix="fastapi-cache")
+    yield
+
+
+app = FastAPI(lifespan=lifespan)
 
 app.mount(
     path="/static",
@@ -80,12 +90,5 @@ async def cache_response_obj():
     return JSONResponse({"a": 1})
 
 
-@app.on_event("startup")
-async def startup():
-    pool = ConnectionPool.from_url(url="redis://redis")
-    r = redis.Redis(connection_pool=pool)
-    FastAPICache.init(RedisBackend(r), prefix="fastapi-cache")
-
-
 if __name__ == "__main__":
     uvicorn.run("main:app", reload=True)