🐛 Add workaround for fastapi-cache issue #144

backend/main.py

@@ -2,7 +2,7 @@
 
 import uvicorn
 from contextlib import asynccontextmanager
-from fastapi import FastAPI
+from fastapi import FastAPI, Request
 from fastapi.middleware.cors import CORSMiddleware
 from fastapi.staticfiles import StaticFiles
 from fastapi_cache import FastAPICache
@@ -43,6 +43,24 @@ app.add_middleware(
 
 app.mount("/widget", StaticFiles(directory="../frontend/", html=True), name="widget")
 
+# The cache-control header entry is not managed properly by fastapi-cache:
+# For now, a request with a cache-control set to no-cache
+# is interpreted as disabling the use of the server cache.
+# Cf. Improve Cache-Control header parsing and handling
+# https://github.com/long2ice/fastapi-cache/issues/144 workaround
+@app.middleware("http")
+async def fastapi_cache_issue_144_workaround(request: Request, call_next):
+    entries = request.headers.__dict__["_list"]
+    new_entries = [
+        entry for entry in entries if entry[0].decode().lower() != "cache-control"
+    ]
+
+    request.headers.__dict__["_list"] = new_entries
+
+    return await call_next(request)
+
+
+
 app.include_router(line.router)
 app.include_router(stop.router)