SeaweedFS

SeaweedFS is a distributed storage system designed to store and serve billions of files efficiently. It combines a high-performance volume layer for blobs with an optional filer layer that adds directories, POSIX-like semantics, and multiple access protocols.

Key Features

• Blob/volume store optimized for fast access with low per-file metadata overhead
• Optional Filer service for directories and file metadata backed by pluggable metadata stores
• S3-compatible object store via built-in S3 API and S3 gateway
• Horizontal scale-out by adding volume servers without automatic rebalancing unless triggered
• Replication with rack and data-center awareness, plus cross-cluster (xDC) replication options
• Erasure coding for warm data to reduce storage cost while maintaining availability
• Tiered storage and cloud tiering for extending capacity and optimizing cost
• Multiple access methods including HTTP and WebDAV, plus POSIX FUSE mount
• Kubernetes support via CSI driver and operator ecosystem
• Encryption support (e.g., AES-GCM) for stored data in supported configurations

Use Cases

• S3-compatible object storage for applications, backups, and artifacts
• Distributed file storage with directory semantics and mountable access for teams and services
• Data lake style storage for big data tools that need Hadoop-compatible access patterns

Limitations and Considerations

• The Filer’s capabilities depend on the chosen metadata backend; availability and performance characteristics vary by backend.
• Some advanced capabilities (e.g., certain erasure coding customizations) may differ between community and enterprise offerings.

SeaweedFS fits organizations that need scalable storage across blobs, files, and object APIs while keeping operational complexity relatively low. It is particularly useful when you want one system that can serve as both a fast local store and a tiered store that can extend into the cloud.