The previous article has already learned about the two consensus mechanisms of POW and POS. In this article, let’s learn about a wave of Dpos, an artifact of fast throughput.
The reason why the throughput of famous public chains such as bitcoin and Ethereum is only 7 and 15 per second is that there are too many nodes, each time It is determined that the block must pass through all nodes, so as to get the affirmation of everyone and maintain the security of the blockchain (however, the security is right, the speed is too slow, think about it if there is really a digital currency, people all over the world If we use it, each of us has to wait for 40 minutes to pay when we go to the supermarket to buy vegetables. Doesn’t that violate the original intention of fast and convenient transactions? Without the nature of fast, it may really not be able to impress the hearts of the people)
At this time, the dreaded Dpos has come to benefit mankind (delegated proof of rights and interests), commonly known as democratic selection, and the general operation process is as follows:
- Representatives selected by nodes are selected and run on professional network servers for security maintenance;
- Randomly determine the order of appearance of producers (selected persons);
- Produced blocks out of order are invalid;
- Shuffle the cards every cycle;
Dpos allows the mining pool to change every 3 seconds (too fast), and the following nodes are in the middle of the scheduled follow-up operations. Once someone produces a block outside the predetermined position, they may be voted out (one of the national leaders Doing things indiscriminately will be screwed up) to ensure the security of the blockchain;
Advantage:
The block consensus cycle is extremely short:
Bitcoin has an average of 7 transactions per second;
Ethereum has an average of 15 transactions;
and the Dpos algorithm application may have 100,000 transactions per second (fast, the ultimate digital currency gospel, Taobao has 9 transactions at the fastest) In case of more than one second of transactions, huge throughput is also required in the stock market, and Dpos is very suitable for these aspects)
Community Rewards:
Different from the mining mechanism of POW or POS, Dpos rewards more community security maintainers (producers), and other voters can also enjoy)
At present, Dpos is not widely used, but it is very innovative and has advantages. I hope to continue to develop such algorithms and provide a technical basis for the digital economy.