Mmaped files are already available it seems (<a href="https:&#x2F;&#x2F;crates.io&#x2F;crates&#x2F;mmap&#x2F;" rel="nofollow">https:&#x2F;&#x2F;crates.io&#x2F;crates&#x2F;mmap&#x2F;</a>), although I&#x27;ve never tried it. You&#x27;d have to implement the interesting structures on top of that yourself however.