In my experience with AWS CodeCommit, I have implemented disaster recovery and backup strategies to ensure data durability and availability. The recommended best practices include:
1. Cross-Region Replication: Set up replication between two or more AWS regions to maintain a copy of the repository in another region, reducing latency for users and providing redundancy.
2. Periodic Backups: Schedule regular backups using AWS Lambda functions triggered by Amazon CloudWatch Events. Store these backups in Amazon S3 with versioning enabled for easy retrieval.
3. Monitoring and Alerts: Monitor repository activity using AWS CloudTrail and set up alerts through Amazon SNS for any unusual activities or unauthorized access attempts.
4. Access Control: Implement strict IAM policies to control user access to repositories, ensuring only authorized personnel can perform actions like push, pull, or delete.
5. Encryption: Enable server-side encryption for data at rest using AWS Key Management Service (KMS) and enforce HTTPS connections for data in transit.
6. Disaster Recovery Plan: Document a clear plan outlining steps to recover from potential disasters, including restoring from backups, switching to replicated repositories, and communicating with stakeholders.