node mysql retry,Nodejs http在超时或错误时重试

I'm trying to automatically retry HTTP requests on timeout or error.

Currently my code looks like this:

var req = http.get(url, doStuff)

.on('error', retry)

.setTimeout(10000, retry);

However, a single request can sometimes trigger both "on error" and "timeout" events. What is a better way of implementing retry?

解决方案

I was looking for same thing and found interesting module requestretry, well suited for such requirement.

Here is usage:

var request = require('requestretry')

request({

url: myURL,

json: true,

maxAttempts: 5, // (default) try 5 times

retryDelay: 5000, // (default) wait for 5s before trying again

retrySrategy: request.RetryStrategies.HTTPOrNetworkError // (default) retry on 5xx or network errors

}, function(err, response, body){

// this callback will only be called when the request succeeded or after maxAttempts or on error

if (response) {

console.log('The number of request attempts: ' + response.attempts);

}

})