Automatic Instrumentation
When integrating Sentry with an Express application, you can leverage provided middlewares to automatically instrument and monitor the performance of your application.
If you’re adopting Performance in a high-throughput environment, we recommend testing prior to deployment to ensure that your service’s performance characteristics maintain expectations.
Copied
const Sentry = require("@sentry/node");
const express = require("express");
const app = express();
Sentry.init({
dsn: "https://examplePublicKey@o0.ingest.sentry.io/0",
integrations: [
// enable Express.js middleware tracing
new Sentry.Integrations.Express({
// to trace all requests to the default router
app,
// alternatively, you can specify the routes you want to trace:
// router: someRouter,
}),
// Automatically instrument Node.js libraries and frameworks
...Sentry.autoDiscoverNodePerformanceMonitoringIntegrations(),
],
// We recommend adjusting this value in production, or using tracesSampler
// for finer control
tracesSampleRate: 1.0,
});
// RequestHandler creates a separate execution context, so that all
// transactions/spans/breadcrumbs are isolated across requests
app.use(Sentry.Handlers.requestHandler());
// TracingHandler creates a trace for every incoming request
app.use(Sentry.Handlers.tracingHandler());
// the rest of your app
// The error handler must be before any other error middleware and after all controllers
app.use(Sentry.Handlers.errorHandler());
app.listen(3000);
Help improve this content
Our documentation is open source and available on GitHub. Your contributions are welcome, whether fixing a typo (drat!) or suggesting an update ("yeah, this would be better").
Our documentation is open source and available on GitHub. Your contributions are welcome, whether fixing a typo (drat!) or suggesting an update ("yeah, this would be better").