A Caching-Enabled Permissioned Blockchain Scheme for Industrial Internet of Things Based on Deep Reinforcement Learning

Figure 1

Ledger structure. The ledger consists of a state database and a blockchain. The blockchain includes a sequence of blocks, where each block contains a set of transactions that change the key-value pairs in the state database. The DHT is responsible to decide which part of IIoT nodes should store the body of a block, according to a hash function. Through the DHT, all block bodies and transactions can be quickly addressed.