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Fundebug backend Node.js plug-in updated to 0.2.0 whether to support monitoring Express slow requests, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain in detail for you, people with this need can come to learn, I hope you can gain something.

Summary: performance issues are also BUG and need to be monitored.

Fundebug backend Node.js exception monitoring service

Fundebug is a professional application exception monitoring platform, our Node.js plug-in fundebug-nodejs can provide a full range of exception monitoring, support Express, Koa and Hapi framework.

From the user's point of view, the performance problem is also BUG to some extent, which may be the index problem of the database, the code algorithm problem, or the design of business logic. To help you quickly locate the performance BUG,fundebug-nodejs plug-in update to 0.2.0, support monitoring Express slow requests.

However, Fundebug has no intention of providing comprehensive performance monitoring services for the time being, and we will continue to focus on BUG monitoring.

Monitor Express slow request

To monitor Express slow requests, you need to configure the threshold httpTimeout and add ExpressTimeoutHandler middleware.

Fundebug.httpTimeout = 1000 * app.use (fundebug.ExpressTimeoutHandler ())

Note that Fundebug's slow request monitoring middleware ExpressTimeoutHandler must be placed before other middleware.

In this way, all requests that take longer than the threshold 1000ms are reported to Fundebug.

Fundebug-express-demo

For more information on how to connect Express to the Fundebug exception monitoring service, check out our Demo project fundebug-express-demo.

Const express = require ("express"); const app = express (); const port = 5000 const fundebug Const Promise = require ("bluebird"); const fundebug = require ("fundebug-nodejs"); fundebug.apikey = "APIKEY"; fundebug.httpTimeout = 1000 X app.use (fundebug.ExpressTimeoutHandler ()); app.get ("/ error", () = > {throw new Error ("test");}); app.get ("/ timeout", async (req, res) = > {await Promise.delay (1500) Res.sendStatus;}); app.use (function (err, req, res, next) {res.status (500); next (err);}); app.use (fundebug.ExpressErrorHandler); app.listen (port, () = > console.log (`Example app listening on port ${port}! `))

Among them, ExpressTimeoutHandler must be placed before other middleware, while ExpressErrorHandler must be placed after other middleware.

The timeout requests captured by Fundebug are as follows:

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