**2. Autonomous multi-layer cache system architecture**

#### **2.1 System architecture**

Autonomous decentralized multi-layer cache system is designed to achieve low latency user push web service. The system architecture is shown as Figure 1.

Fig. 1. Autonomous Decentralized Multi-Layer Cache system architecture

The system has following features.


The storage space for all data is at C-node trio group. Each C-Node is connected three of them. To execute C-Node application program, P-Node is always required. Therefore, group creation process is required initially.
