The most useful Redis pattern I've found for real-time data: write with explicit TTLs and let stale data expire naturally instead of invalidating. If your write

The most useful Redis pattern I've found for real-time data: write with explicit TTLs and let stale data expire naturally instead of invalidating. If your writer dies, the data expires on its own within the TTL window. No stale data served indefinitely. Simple but surprisingly hard to break