在x时间后失败时重试功能 [英] Retry function on failure after x amount of time

问题描述

问题:

我有一个通过VIA Cronjob触发的功能.此cronjob在晚上10:00触发该功能，但可以说该功能正常处理所需的数据不存在.我想失败，但是要让函数重试1个小时.我该如何处理这个问题?

代码:

  def check_question do
    case question = Repo.get_by(Question, active: true, closed: true) do

    question when not(is_nil(question)) ->
      case ActiveQuestion.ready_for_answer_status(conn, question) do

      end
    _ ->
      # RETRY CODE HERE
    end
  end

因此您可以从这段代码中看到.如果查询找不到问题，我将case语句发送给失败，但是在失败的情况下，我想在1小时内返回该函数.如何用Elixir/Phoenix做到这一点?感谢您的帮助！

解决方案

我更喜欢将任务加入像 exq (支持redis)或cron作业中的 ecto_job (支持PostgreSQL). /p>

从那里开始，它会自动重试到某个最大值，并且两次重试之间会有延迟.

它还具有避免服务器重新启动等优点.

PROBLEM:

I have a function that gets triggered VIA Cronjob. This cronjob fires the function at 10:00pm but let's say the data required is not present for the function to properly be handled. I want to fail but then have the function retry an 1 hour. How would I handle this problem?

CODE:

  def check_question do
    case question = Repo.get_by(Question, active: true, closed: true) do

    question when not(is_nil(question)) ->
      case ActiveQuestion.ready_for_answer_status(conn, question) do

      end
    _ ->
      # RETRY CODE HERE
    end
  end

So as you can see from this bit of code. If the query does not find the question I send the case statement to a failure but inside that fail case I want to return the function in 1 hour. How can I achieve this with Elixir/Phoenix? Thanks for the help!

解决方案

I prefer to enqueue tasks into a job system like Exq (redis backed) or ecto_job (postgresql backed) from the cron job.

From there it will automatically retry up to some maximum with a delay between retries.

It also has the benefit of surviving server reboots etc.

这篇关于在x时间后失败时重试功能的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！