From what I understand after going through the docs, KV is currently the only way to store data in Workers, and Durable Objects are going to be the new alternative.
KV is eventually consistent, appropriate for low-value data that is read a lot , written infrequently... Durable Objects will provide consistency, at the cost of not having the very low latency of KV because it has to run in a single location instead of on the edges. So there seems to be room for both solutions.
About DDOS, I believe Cloudfare is a leader in ddos-protection, so I would hope they include protection in all their Workers (pls someone correct me if I'm wrong).
KV is eventually consistent, appropriate for low-value data that is read a lot , written infrequently... Durable Objects will provide consistency, at the cost of not having the very low latency of KV because it has to run in a single location instead of on the edges. So there seems to be room for both solutions.
About DDOS, I believe Cloudfare is a leader in ddos-protection, so I would hope they include protection in all their Workers (pls someone correct me if I'm wrong).