mapfs is a C-language userspace file system. mapfs is designed to speed up cloud object storage access from locally with optimized cache mechanism. mapfs supports POSIX semantics.

Mapfs supports Azure Blob Storage and AWS S3-like Object Storage, e.g. Wasabi, Google Cloud Storage, Oracle Cloud Storage, Aliyun, CloudFlare R2, etc.


mapfs is extremely fast!

IOPS: 1.1M
Throughput: 80 GiB/s
 

mapfs is small

  • scales from tiny machine (1 CPU/ 1GB RAM) to large machine (32 CPU/ 64GB RAM) with least memory/cpu usage.
  • Self managed RAM, doesn't touch system page cache.
 

Latest Release

Version 2.0 (2026-05-28)