Firecracker VM temporary disk space

[greg]

Based on this answer, it’s 5GB:

Fly provides each instance with 5GB of storage

Source:

Running a Global Object Cache Cluster using NGINX

NGINX is a very fast proxy server that has a built-in caching system — useful if you want a caching CDN for your users, or a way to cache objects inside Fly for fast and repeated access from your applications. The first and simplest configuration is to use a set of ephemeral instances that based on GitHub - fly-apps/nginx: A fly app nginx config — this will load up each instance with NGINX, and the nginx.conf has a line to set the origin URL: set $origin_url https://example.org; We can modify…

However the recommended solution is to attach a volume. Because …

Scaling Ephemeral Disk

It’s not! We actually don’t intend for the ephemeral disk space to be written to. It’s writable just because so much stuff breaks without it, but we’d make it readonly if we could. You can use autoscaling with persistent volumes, though, so that’s worth a try. We’ll have a better way to autoscale with disks in a few months.