wholesale jewelry charms usa Analysis of the relationship between Kunming computer training sharing distribution and blockchain and blockchain

hong kong wholesale fashion jewelry The discussion on blockchain technology has said many times in the previous issues, and I also introduce to you which programming development languages ​​are used to realize the presentation of blockchain technology. Today we will come together today Understand how to analyze and understand the structure of the blockchain from a distributed perspective.

The blockchain is derived from the underlying technology in Bitcoin. It is used to achieve a centered point -free cash system. The form of blockchain organizes transaction data to prevent "double flowers" and reach a transaction consensus.

It digital assets in the traditional sense, such as gaming coins, are managed in a centralized manner, can only flow in a single system. Store in a database. In macro perspective, the blockchain, like the database, is used to save data, but the form of data access is different.

The blockchain is essentially a distributed database that is more lively in different places. It was proposed that it was originally to solve the problem of disaster recovery in the system. It has been the direction of the field of distributed databases for many years, but it has little effect. It's not easy to solve. However, the blockchain born in Bitcoin realizes the world's large alien multi -active database in a new way. It is fully open, without borders, supports tens of thousands of nodes, and can be randomly added and exited.

The data conflict problem in the blockchain is even more prominent. Each node in the blockchain is a completely equivalent multi -active architecture, and tens of thousands of nodes must be reached. Who is it? The way Bitcoin adopts is POW. Everyone comes to calculate a puzzle. Whoever calculates it first will have the right to remember. In this cycle, it is based on the account he remembered. calculate. The nodes for competing for the right to record the rights decide which transactions are packaged into the block and synchronize the block to other nodes. Other nodes still need to verify the transactions in the block based on local data. Accept unconditional, this is the consensus algorithm in the blockchain. Although POW consumes a lot of computing power, the advantage is that in the process of competing for the right to notice, POW only needs to calculate HASH in its own nodes and does not need to be elected by online voting. The cost of network communication is small, which is suitable for the consensus between large -scale nodes. Kunming Computer Training/I believe that POW is a complete and simple and rude method in the current public chain, which can stand the test, but the problem is that the efficiency is too low.

So POS and DPOS have been developed later. Whoever owns assets, who has the right to record, or vote, but this has introduced economic problems, such as so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called so -called The problem of bribery is not easy to control. In the traditional distributed database, it is not called consensus algorithm, but consistent algorithms is essentially the same thing. But the number of nodes in distributed databases is very small, and the network is credible. Generally, the nodes are safe and reliable. We can basically believe that each node. Response. Therefore, in the distributed data of traditional companies, the Raft or PAXOS protocol is used to do this consistent algorithm.