LRU cache
Least Recently Used caching is one of the oldest techniques in computing. When a new item needs to be stored but the cache is at capacity, the item that was accessed furthest back in time is removed. The result is that frequently accessed items stay in the cache, and cold items leave on their own.
For video editors, LRU means your cache never manually fills up or stops working. You set a size budget (for example 50 GB), and the system handles the cleanup. Pinned items are excluded from eviction, so critical project files can be protected manually.
Examples
- •Set a 100 GB cache budget, the oldest unused proxies are removed when you approach the limit
- •Pin the current client project so its proxies never get evicted while you are working on it
- •Trigger a manual cleanup to free space immediately without waiting for automatic eviction
In Sanbila
Sanbila's local SSD cache runs an LRU policy with configurable size from 5 GB to 500 GB. Pinned projects are protected. Originals stay safe in the cloud, so any evicted proxy can be re-streamed on demand.
Frequently asked questions
How is Sanbila different from the proxy generator built into my NLE?+
Premiere Pro, DaVinci Resolve, Final Cut Pro and Avid all generate proxies locally, but they keep the original full-resolution files on the same SSD — so the disk fills up twice. Sanbila stores the originals in the cloud (Cloudflare R2) and keeps only the lightweight proxies on your machine. At export, Smart Relink streams the originals back via a local WebDAV mount, so you finish at full quality without ever downloading the source files.
Does Sanbila work offline?+
Yes for editing — once a proxy is cached on your SSD, you can cut, trim, color and arrange your timeline without an internet connection. You only need network access for the initial import (uploading originals to the cloud) and for the final export (streaming originals back via WebDAV).
How much cloud storage does the free plan include?+
The free plan includes 5 GB of cloud storage and one project, with no credit card required. Paid plans start at $49 per month for 2 TB and 50 projects, going up to 25 TB on the Enterprise plan with overage billing for teams that need more.
What upload speed do I need to use Sanbila?+
Any broadband connection works for the initial upload — Sanbila chunks files into 50 MB parts and uploads in parallel, so a typical 100 Mbps fiber line uploads 1 hour of 4K H.264 footage in about 6 minutes. After upload, day-to-day editing happens on local proxies, so your connection speed only matters again at export time when originals are streamed.
Which video formats does Sanbila support?+
Sanbila handles 22+ formats out of the box: MP4, MOV, MXF, R3D (RED RAW), BRAW (Blackmagic RAW), ARRI proxies, ProRes, DNxHR, DNxHD, H.264, H.265, plus WAV and AAC for audio. Both 4K and 8K sources are supported up to 200 GB per single file (URL imports have no size limit).
Related terms
Sources
- Cache replacement policies (LRU) · Wikipedia
- How Cloudflare cache works · Cloudflare
- Linux memory management concepts · Linux Kernel docs