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TTL_HOURS = 6
DEPLOYS = 1000
DEPLOYS_PER_DAY = 4
USERS_PER_HOUR = 100             # baseline traffic
PURGE_SUCCESS_PCT = 95           # purge API misses 5% of edge nodes

# TTL: users hitting cache during the stale window between deploy and TTL expiry
ttl_stale = DEPLOYS * (TTL_HOURS * USERS_PER_HOUR)
# Purge: 5% of edges miss the purge -> stale until TTL
purge_stale = DEPLOYS * (TTL_HOURS * USERS_PER_HOUR) * (100 - PURGE_SUCCESS_PCT) // 100
# Versioned URLs: new URL per deploy, no stale exposure ever
versioned_stale = 0
print(f"ttl={ttl_stale} purge={purge_stale} versioned={versioned_stale}")

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