12.12P2P内容分发网络选购

import p2plib

def initialize_p2p_network():
    network = p2plib.Network()
    network.add_node('node1', '192.168.1.1')
    network.add_node('node2', '192.168.1.2')
    # 添加更多节点...
    return network

def distribute_content(network, content_id):
    content = fetch_content_from_storage(content_id)
    for node in network.nodes:
        node.cache_content(content_id, content)

def fetch_content(node, content_id):
    if node.has_cached_content(content_id):
        return node.get_cached_content(content_id)
    else:
        content = fetch_content_from_origin_server(content_id)
        node.cache_content(content_id, content)
        return content

def fetch_content_from_storage(content_id):
    # 从存储系统中获取内容的逻辑
    pass

def fetch_content_from_origin_server(content_id):
    # 从原始服务器获取内容的逻辑
    pass

# 初始化P2P网络
network = initialize_p2p_network()

# 分发内容
distribute_content(network, 'video123')

# 用户请求内容
user_node = network.get_node('user1')
content = fetch_content(user_node, 'video123')