Select your cookie preferences

We use essential cookies and similar tools that are necessary to provide our site and services. We use performance cookies to collect anonymous statistics, so we can understand how customers use our site and make improvements. Essential cookies cannot be deactivated, but you can choose “Customize” or “Decline” to decline performance cookies.

If you agree, AWS and approved third parties will also use cookies to provide useful site features, remember your preferences, and display relevant content, including relevant advertising. To accept or decline all non-essential cookies, choose “Accept” or “Decline.” To make more detailed choices, choose “Customize.”

Preferences
Contact Us
Feedback
AWS Documentation
Create an AWS Account

Step 4: Simulating an issue and replay events for recovery

PDF
RSS
Focus mode
Step 4: Simulating an issue and replay events for recovery - Amazon Simple Notification Service
Step 1: Enable the simulated issue and send a second API requestStep 2: Verify simulated data corruptionStep 3: Disable the simulated issueStep 4: Enable replay to recover from the issue

Step 1: Enable the simulated issue and send a second API request

  1. Sign in to the AWS Lambda console.

  2. On the navigation panel, choose Functions.

  3. Search for serverlessrepo-fork-example and choose CheckoutFunction.

  4. On the fork-example-ecommerce-my-app-CheckoutFunction-ABCDEF... page, in the Environment variables section, set the BUG_ENABLED variable to true and then choose Save.

  5. Copy the following JSON to a file named test_event_2.json.

    {
	   "id": 9917,
	   "date": "2019-03-26T21:11:10-08:00",
	   "status": "confirmed",
	   "customer": {
	      "id": 56999,
"quantity": 1,
	      "price": 75.00,
	      "subtotal": 75.00
	   }]
	}

  6. To send an HTTPS request to your API endpoint, pass the sample event payload as input by executing a curl command, for example:

    curl -d "$(cat test_event_2.json)" https://abcdefghij.execute-api.us-east-2.amazonaws.com/Prod/checkout

    The API returns the following empty response, indicating a successful execution:

    { }

Step 2: Verify simulated data corruption

  1. Sign in to the Amazon DynamoDB console.

  2. On the navigation panel, choose Tables.

  3. Search for serverlessrepo-fork-example and choose CheckoutTable.

  4. On the table details page, choose Items and then choose the created item.

    The stored attributes are displayed, some marked as CORRUPTED!

Step 3: Disable the simulated issue

  1. Sign in to the AWS Lambda console.

  2. On the navigation panel, choose Functions.

  3. Search for serverlessrepo-fork-example and choose CheckoutFunction.

  4. On the fork-example-ecommerce-my-app-CheckoutFunction-ABCDEF... page, in the Environment variables section, set the BUG_ENABLED variable to false and then choose Save.

Step 4: Enable replay to recover from the issue

  1. In the AWS Lambda console, on the navigation panel, choose Functions.

  2. Search for serverlessrepo-fork-example and choose ReplayFunction.

  3. Expand the Designer section, choose the SQS tile and then, in the SQS section, choose Enabled.

    Note

    It takes approximately 1 minute for the Amazon SQS event source trigger to become enabled.

  4. Choose Save.

  5. To view the recovered attributes, return to the Amazon DynamoDB console.

  6. To disable replay, return to the AWS Lambda console and disable the Amazon SQS event source trigger for ReplayFunction.

On this page

PrivacySite termsCookie preferences
© 2025, Amazon Web Services, Inc. or its affiliates. All rights reserved.