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Do HTTP Requests Automatically Retry on Server Outages?

Mary-Kate Olsen
Mary-Kate OlsenOriginal
2024-10-31 03:55:30194browse

Do HTTP Requests Automatically Retry on Server Outages?

HTTP Request Retrying Mechanism

Q: I'm attempting to push data to an Apache server using Go. If the Apache server experiences a temporary shutdown, will my HTTP request automatically retry?

A: No, HTTP requests do not inherently retry upon server outages.

Custom Retry Logic

To implement automatic retries, you need to create your own retry mechanism. A basic implementation is available at the following link:

[Go Retry Function Example](https://play.golang.org/p/_o5AgePDEXq)

<code class="go">package main

import (
    "fmt"
    "io/ioutil"
    "log"
    "net/http"
)

func main() {
    var (
        err      error
        response *http.Response
        retries  int = 3
    )
    for retries > 0 {
        response, err = http.Get("https://non-existent")
        if err != nil {
            log.Println(err)
            retries -= 1
        } else {
            break
        }
    }
    if response != nil {
        defer response.Body.Close()
        data, err := ioutil.ReadAll(response.Body)
        if err != nil {
            log.Fatal(err)
        }
        fmt.Printf("data = %s\n", data)
    }
}</code>

In this example, a custom retry mechanism is implemented using a loop that attempts an HTTP request multiple times before failing. You can adjust the number of retries and the logic for determining whether to retry based on the specific needs of your application.

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