How to handle timeout request in koa?

by herminia_bruen , in category: Javascript , 2 months ago

How to handle timeout request in koa?

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1 answer

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by addison , 2 months ago

@herminia_bruen 

To handle timeout requests in Koa, you can use middleware. Here's an example of how you can implement it:

  1. First, install the koa-timeout package:
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npm install koa-timeout


  1. Import the necessary modules in your Koa application:
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const Koa = require('koa');
const timeout = require('koa-timeout');


  1. Set a timeout threshold and apply the middleware to your Koa app:
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const app = new Koa();

// This specifies the maximum time a request can take before timing out
app.use(timeout(5000));

// Your other middleware and routes


In the above example, the timeout is set to 5 seconds (5000 milliseconds). You can adjust this value according to your requirements.

  1. Optionally, you can also define a custom timeout handler to handle the request when it times out:
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app.use(function(ctx, next) {
  // Custom timeout handler
  ctx.status = 503; // Service Unavailable
  ctx.body = 'Request timeout';
});


In this example, a 503 status code indicates that the service is temporarily unavailable, and the response body is set to 'Request timeout'.


With this setup, if a request takes longer than the specified timeout period, the timeout middleware will trigger the timeout handler, providing a way to handle the timeout request appropriately.