Security update: Docker images from v0.4.0-rc.1 fix the high-severity FFmpeg MagicYUV decoder vulnerability (CVE-2026-8461). Upgrade instances using older images immediately.View CVE advisory

Security update: v0.4.0-beta.3 fixes a WebDAV request issue that can terminate the server process. Upgrade older instances promptly.View advisory

Cache

[cache]
backend = "memory"
endpoint = ""
default_ttl = 3600

Keep the Default for Most Deployments

For single-node, NAS, personal, or small-team deployments, the memory cache is enough. Redis is worth adding only in these two cases:

Multi-instance deployments
Multiple application instances need to share cache data

Options

Option	Default	Purpose
`backend`	`"memory"`	`memory` or `redis`
`endpoint`	`""`	Redis connection URL, used only when `backend = "redis"`
`default_ttl`	`3600`	Default TTL in seconds

What Happens If Redis Is Unreachable

If backend is set to redis but Redis cannot be reached, AsterDrive will automatically fall back to memory cache and continue running.

The service usually will not fail to start just because Redis is temporarily unavailable, but cache will no longer be shared across instances.

Environment Variables

ASTER__CACHE__BACKEND=memory
ASTER__CACHE__ENDPOINT=redis://127.0.0.1:6379/0
ASTER__CACHE__DEFAULT_TTL=3600