Amazon ECS now supports tmpfs mounts on AWS Fargate and ECS Managed Instances

This article announces that Amazon ECS now supports tmpfs mounts for Linux tasks on AWS Fargate and ECS Managed Instances, enabling memory-backed file systems for containerized workloads.

• tmpfs creates temporary, memory-backed file systems without persisting data to storage
• Ideal for performance-sensitive workloads requiring fast scratch files and caches
• Enhances security by not persisting sensitive data like credentials after task stops
• Allows read-only container root file systems while enabling in-memory writes
• Configure via task definitions using linuxParameters with containerPath, size, and mountOptions
• Available in all AWS Regions supporting ECS, Fargate, and Managed Instances

tmpfs mounts extend ECS capabilities beyond EC2, providing efficient temporary storage for performance and security-critical containerized applications.