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fastapi: emit a single Server header and stop gzip-inflating tiny bodies #1054

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Merged
Kaliumhexacyanoferrat merged 2 commits into from
Jul 26, 2026
+164 −169
Merged

fastapi: emit a single Server header and stop gzip-inflating tiny bodies #1054

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fastapi: emit a single Server header and stop gzip-inflating tiny bodies
TOKUJI Jul 26, 2026
ed551d4
Benchmark results: fastapi
github-actions[bot] Jul 26, 2026
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2 changes: 1 addition & 1 deletion frameworks/fastapi/Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -4,4 +4,4 @@ COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt
COPY . .
EXPOSE 8080 8081
CMD [ "python3", "launcher.py", "uvicorn", "app:app", "--host", "0.0.0.0", "--port", "8080", "--loop", "uvloop", "--log-level", "critical" ]
CMD [ "python3", "launcher.py", "uvicorn", "app:app", "--host", "0.0.0.0", "--port", "8080", "--loop", "uvloop", "--log-level", "critical", "--no-server-header", "--header", "Server:FastAPI" ]
11 changes: 1 addition & 10 deletions frameworks/fastapi/app.py
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Expand Up @@ -9,7 +9,6 @@
from fastapi import FastAPI, Request, Response, Path, Query, HTTPException
from fastapi.responses import PlainTextResponse, JSONResponse
from fastapi.middleware.gzip import GZipMiddleware
from fastapi.applications import BaseHTTPMiddleware
from fastapi.staticfiles import StaticFiles


Expand Down Expand Up @@ -74,15 +73,7 @@ async def lifespan(application: FastAPI):

app = FastAPI(lifespan=lifespan)

app.add_middleware(GZipMiddleware, minimum_size=1, compresslevel=5)

class ServerHeaderMiddleware(BaseHTTPMiddleware):
async def dispatch(self, request, call_next):
response = await call_next(request)
response.headers["Server"] = "FastAPI"
return response

app.add_middleware(ServerHeaderMiddleware)
app.add_middleware(GZipMiddleware, minimum_size=1000, compresslevel=5)


# -- Routes ------------------------------------------------------------------
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