NNTP servers can be synchronized in the following ways:
1. Set up a hierarchy: In a hierarchy, one server is designated as the master while other servers are set up as replicas. The master server is responsible for receiving and processing messages before forwarding them to the replicas. The replicas are set up to receive only a subset of messages, reducing the replication load on the network.
1. Use NNTP feed: NNTP feed allows a server to receive messages from another server in real-time. The receiving server subscribes to the provider server by setting up a connection between the two servers. This connection allows the provider server to feed messages to the receiving server in real-time.
1. Use NNTP peering: NNTP peering involves setting up a direct connection between servers. This allows servers to exchange messages and synchronize their databases without relying on a single master server. Peering can be set up between two or more servers, ensuring that all servers have access to the same set of messages.
1. Use distributed data storage: Distributed data storage ensures that data is stored on multiple servers. This ensures that even if one server fails, data can be recovered from other servers. Distributed data storage can be set up using technologies such as RAID or distributed file systems.
