Ethereum

Vitalik published an article titled Epochs and slots all the way down: ways to give Ethereum users faster transaction confirmation times. Currently, Ethereum's Gasper consensus mechanism uses a slot-and-epoch architecture, but this mechanism is complex and the finality confirmation time is too long (12.8 minutes). SSF uses a mechanism similar to Tendermint to terminate the block before the next block is generated, while retaining the "inactive leakage" mechanism to ensure the stable operation and recovery capability.

Vitalik published an article titled Epochs and slots all the way down: ways to give Ethereum users faster transaction confirmation times. Currently, Ethereum's Gasper consensus mechanism uses a slot-and-epoch architecture, but this mechanism is complex and the finality confirmation time is too long (12.8 minutes). SSF uses a mechanism similar to Tendermint to terminate the block before the next block is generated, while retaining the "inactive leakage" mechanism to ensure the stable operation and recovery capability. 

https://vitalik.eth.limo/general/2024/06/30/epochslot.html