⚡️ Use Redis to cache REST responses

backend/main.py

@@ -5,6 +5,7 @@ from contextlib import asynccontextmanager
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 from fastapi.staticfiles import StaticFiles
+from fastapi_cache import FastAPICache
 from opentelemetry import trace
 from opentelemetry.exporter.otlp.proto.http.trace_exporter import OTLPSpanExporter
 from opentelemetry.instrumentation.fastapi import FastAPIInstrumentor
@@ -13,12 +14,14 @@ from opentelemetry.sdk.trace import TracerProvider
 from opentelemetry.sdk.trace.export import BatchSpanProcessor
 
 from backend.db import db
-from dependencies import idfm_interface, settings
+from dependencies import idfm_interface, redis_backend, settings
 from routers import line, stop
 
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
+    FastAPICache.init(redis_backend, prefix="api", enable=settings.cache.enable)
+
     await db.connect(settings.db, settings.clear_static_data)
     if settings.clear_static_data:
         await idfm_interface.startup()
@@ -44,20 +47,29 @@ app.include_router(line.router)
 app.include_router(stop.router)
 
 
-FastAPIInstrumentor.instrument_app(app)
+if settings.tracing.enable:
+    FastAPIInstrumentor.instrument_app(app)
 
-trace.set_tracer_provider(
-    TracerProvider(resource=Resource.create({SERVICE_NAME: settings.app_name}))
-)
-trace.get_tracer_provider().add_span_processor(BatchSpanProcessor(OTLPSpanExporter()))
-tracer = trace.get_tracer(settings.app_name)
+    trace.set_tracer_provider(
+        TracerProvider(resource=Resource.create({SERVICE_NAME: settings.app_name}))
+    )
+    trace.get_tracer_provider().add_span_processor(
+        BatchSpanProcessor(OTLPSpanExporter())
+    )
+    tracer = trace.get_tracer(settings.app_name)
 
 
 if __name__ == "__main__":
     http_settings = settings.http
-    uvicorn.run(
-        app,
+
+    config = uvicorn.Config(
+        app=app,
         host=http_settings.host,
         port=http_settings.port,
         ssl_certfile=http_settings.cert,
+        proxy_headers=True,
     )
+
+    server = uvicorn.Server(config)
+
+    server.run()