Checking the API properties

Prometheus is a popular monitoring total that can monitor and check API services in any microservice application. It can check the number of concurrent request transactions, the number of responses at a certain period, and the total incoming requests of an endpoint. To apply Prometheus to FastAPI applications, first, we need to install the following module:

pip install starlette-exporter

Then, we add PrometheusMiddleware to the application and enable its endpoint to observe the API’s properties at runtime. The following script shows the application setup with the Prometheus monitoring module:

from starlette_exporter import PrometheusMiddleware, 
         handle_metrics
app = FastAPI()
app.add_middleware(PrometheusMiddleware, app_name=”osms”) 
app.add_route(“/metrics”, handle_metrics)

Here, we add PrometheusMiddleware using the add_middleware() method of FastAPI. Then...