Client Architecture

Client Architecture

Optimism nodes made up of 2 primary components:

DTL (Data Transport Layer) [also called the Ethereum data indexer]

l2geth (modified geth client for L2)

Data Transport Layer (DTL)

reconstructs the Optimism blockchain from blocks published to the CTC contract.

DTL searches for events emitted by the CTC contract that signal that new Optimism blocks have been published. It inspects these transactions that emitted these events to reconstruct blocks in the standard Ethereum block format.

l2geth

Continuously monitors the DTL for newly indexed blocks.

When a new block is indexed, the client software will download it and execute the transactions included within it.

The process is such:

We load the Optimism state.

Apply transaction against the state.

Record the resulting state change.

Repeat steps 1 to 3 for each new block indexed by the DTL.

References

How Optimism Works

Hello! By the time you've finished reading this page you should have a foundational understanding of how Optimism makes Ethereum transactions cheaper and faster, the approach that Optimism is taking to scaling both Ethereum and Ethereum's values, and why Optimism is the best place to build your next Ethereum-native app.

https://community.optimism.io/docs/how-optimism-works/#

Client Architecture

Client Architecture

Optimism nodes made up of 2 primary components:

DTL (Data Transport Layer) [also called the Ethereum data indexer]

l2geth (modified geth client for L2)

Data Transport Layer (DTL)

reconstructs the Optimism blockchain from blocks published to the CTC contract.

DTL searches for events emitted by the CTC contract that signal that new Optimism blocks have been published. It inspects these transactions that emitted these events to reconstruct blocks in the standard Ethereum block format.

l2geth

Continuously monitors the DTL for newly indexed blocks.

When a new block is indexed, the client software will download it and execute the transactions included within it.

The process is such:

We load the Optimism state.

Apply transaction against the state.

Record the resulting state change.

Repeat steps 1 to 3 for each new block indexed by the DTL.

References

How Optimism Works

Hello! By the time you've finished reading this page you should have a foundational understanding of how Optimism makes Ethereum transactions cheaper and faster, the approach that Optimism is taking to scaling both Ethereum and Ethereum's values, and why Optimism is the best place to build your next Ethereum-native app.

https://community.optimism.io/docs/how-optimism-works/#