How have you handled errors in integrations? Can you give a specific example?

When working with integrations, I always try to anticipate error handling at multiple levels:

1. Validation of incoming data — to avoid errors due to incorrect format.
2. Network error handling — timeouts, service unavailability.
3. Logging errors for subsequent analysis.
4. Retry mechanisms with exponential backoff.
5. Notifications or alerts in case of critical failures.

A specific example: integration with an external payment system API.

• When sending a request, I checked the correctness of the data (e.g., amount format, currency).
• If the API returned a 429 error (too many requests), I implemented a retry with delay.
• For network errors (timeout), I also performed retries.
• All errors were logged with request and response details.
• If after several attempts the error persisted, I sent a notification to the support team via Slack.

This approach helps minimize the impact of integration failures on business processes and allows for quick response to issues.