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docs: typos (#9379)

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Alexey Shekhirin
2024-07-08 17:45:18 +01:00
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docs/crates/stages.md
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@ -90,7 +90,7 @@ pub struct SealedHeader {
<!-- Not sure about this, how is it validated? -->
Each `SealedHeader` is then validated to ensure that it has the proper parent. Note that this is only a basic response validation, and the `HeaderDownloader` uses the `validate` method during the `stream`, so that each header is validated according to the consensus specification before the header is yielded from the stream. After this, each header is then written to the database. If a header is not valid or the stream encounters any other error, the error is propagated up through the stage execution, the changes to the database are unwound and the stage is resumed from the most recent valid state.
This process continues until all of the headers have been downloaded and written to the database. Finally, the total difficulty of the chain's head is updated and the function returns `Ok(ExecOutput { stage_progress, done: true })`, signaling that the header sync has completed successfully.
This process continues until all of the headers have been downloaded and written to the database. Finally, the total difficulty of the chain's head is updated and the function returns `Ok(ExecOutput { stage_progress, done: true })`, signaling that the header sync has been completed successfully.
<br>

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docs/design/review.md
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@ -25,7 +25,7 @@ This document contains some of our research in how other codebases designed vari
## Header Downloaders
* Erigon Header Downloader:
* A header downloader algo was introduced in [`erigon#1016`](https://github.com/ledgerwatch/erigon/pull/1016) and finished in [`erigon#1145`](https://github.com/ledgerwatch/erigon/pull/1145). At a high level, the downloader concurrently requested headers by hash, then sorted, validated and fused the responses into chain segments. Smaller segments were fused into larger as the gaps between them were filled. The downloader also used to maintain hardcoded hashes (later renamed to preverified) to bootstrap the sync.
* A header downloader algo was introduced in [`erigon#1016`](https://github.com/ledgerwatch/erigon/pull/1016) and finished in [`erigon#1145`](https://github.com/ledgerwatch/erigon/pull/1145). At a high level, the downloader concurrently requested headers by hash, then sorted, validated and fused the responses into chain segments. Smaller segments were fused into larger as the gaps between them were filled. The downloader is also used to maintain hardcoded hashes (later renamed to preverified) to bootstrap the sync.
* The downloader was refactored multiple times: [`erigon#1471`](https://github.com/ledgerwatch/erigon/pull/1471), [`erigon#1559`](https://github.com/ledgerwatch/erigon/pull/1559) and [`erigon#2035`](https://github.com/ledgerwatch/erigon/pull/2035).
* With PoS transition in [`erigon#3075`](https://github.com/ledgerwatch/erigon/pull/3075) terminal td was introduced to the algo to stop forward syncing. For the downward sync (post merge), the download was now delegated to [`EthBackendServer`](https://github.com/ledgerwatch/erigon/blob/3c95db00788dc740849c2207d886fe4db5a8c473/ethdb/privateapi/ethbackend.go#L245)
* Proper reverse PoS downloader was introduced in [`erigon#3092`](https://github.com/ledgerwatch/erigon/pull/3092) which downloads the header batches from tip until local head is reached. Refactored later in [`erigon#3340`](https://github.com/ledgerwatch/erigon/pull/3340) and [`erigon#3717`](https://github.com/ledgerwatch/erigon/pull/3717).