<p>I am writing my first web application in Go. It is a simple SEO tool that will analyse web pages and send an email report with ideas for improvement.</p>
<p>I want to implement the parsing + sending-emails logic in a background process and I was wondering what is the best way to handle it.</p>
<p>Here is how I am currently doing it - As soon as the user submits a form with the URL, store it in the database and render a response. Then create a new go routine and call the extract+email function in that go routine.</p>
<p>But I think this approach is naive. It does not take into account failures that happen in the go routine. Is there a better way to implement this? How can I retry failures?</p>
<p>Or should I use a task queue like gocraft/work or <a href="https://github.com/RichardKnop/machinery" rel="nofollow">https://github.com/RichardKnop/machinery</a>. Both these tools require a redis backend and I felt that they might be an overkill for a small project.</p>
<p>I'd appreciate your inputs.</p>
<hr/>**评论：**<br/><br/>cjbprime: <pre><p>The smallest possible change would be:</p>
<ul>
<li><p>Make the goroutine write a timestamp to the DB when it has sent an email</p></li>
<li><p>Make the goroutine check all rows without a timestamp and try to send email for them, each time it runs</p></li>
</ul>
<p>Guarantees no more than one message, and failed goroutine get retried later.</p></pre>
