[#33] - Adds a Cronjob to delete the queue error messages from the database after a configirable period in days

Author: cristiano-pacheco

.DS_Store

@@ -15,6 +15,7 @@ utilizing The RabbitMQ's [dead letter exchange](https://www.rabbitmq.com/dlx.htm
 - [How it works](#how-it-works)
 - [Configuration](#configuration)
 - [Skipping the retry](#skipping-the-retry)
+- [Exploring a real scenario](#exploring-a-real-scenario)
 - [License](#licence)
 
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@@ -203,6 +204,10 @@ System > Configuration > RUN-AS-ROOT > Message Queue Retry
 
 ![img.png](docs/module-configuration.png)
 
+**Note:** The configuration `Total of days to keep the messages` is the period that the messages will stay in the database. After this period, the messages will be deleted automatically by a Cron job.
+
+The `run_as_root_clean_old_queue_error_messages` cron job is scheduled to run every day at 02:00 AM.
+
 ---
 
 ### Skipping the retry
@@ -219,5 +224,11 @@ For more information of how to configure message queues in Magento 2, you can ta
 
 ---
 
+## Exploring a real scenario
+
+If you want to know more about this module and explore a real scenario with it, please, take a look at the [blog post](https://dev.to/run_as_root/preventing-transaction-loss-unleashing-the-power-of-resilient-transactions-with-rabbitmq-dead-letter-exchanges-in-magento-2-8h0) we wrote about it.
+
+---
+
 ## License
 [MIT](https://opensource.org/licenses/MIT)