LIMITS
- URL lifetime:  4 hours by default; single files can be extended
  via &ttl=<h|d> when uploading, clamped to [4h, 14d] (MAX 14 days)
- Dir lifetime: sliding, default 7 days, MAX 14 days via ttl= (clamped
  [4h, 14d]);
  each add/edit/delete slides expires_at forward, capped at 30 days total
- Max file size: 5 MB
- Pool size:     100 MB (oldest files evicted first)
- Rate limit:    100 requests/min per IP
- Dir history:   last 50 entries kept per dir

PERSISTENCE — how long something lives, per type (also in each response's
"persistence" block):
- single file:  4h by default (extendable_by:none; &ttl= up to 14d
                set at upload time; &share= stores it under a chosen name
                with a sliding 7d default lifetime instead; &once=1 = burn-
                after-reading, auto-deletes after the first download)
- dir:          sliding lifetime (default 7d), extendable by activity
                (extendable_by:activity), capped at 30 days total
- bundle:       fixed 4h snapshot, not extendable (extendable_by:none)

curl -A curl https://skale.dev/throway/help/limits             # this topic as plain text