Input Endorsers

Implementation of input endorsers will also improve block propagation times and throughput. Input endorsers keep track of all submitted transactions and bundle these transactions into pre-constructed blocks. This means there are two sets of blocks, ones that contain the transactions and ones that achieve consensus. The blocks performing consensus will reference the pre-constructed blocks, which are constantly streamed without having to wait for consensus to be achieved. This will improve the consistency of block propagation times and allow higher transaction rates.

John Woods, the former Director of Cardano Architecture at IOG, said:

Pipelining implementation is just great technology. Synthetic benchmarks show up to 40% efficiency gains. It's a great part of the story of how Cardano scales to meet demand in 2022. 2023 will see the dawn of Ouroboros Leios (input endorsers), which will be a game-changer. It is expected that input endorsers are going to scale Cardano for the next half decade.