deep-stack/ipld-eth-server
6
0
Fork 0
forked from cerc-io/ipld-eth-server
Code Pull Requests Activity

Mention reorgs in data-sync documentation

Browse Source
This commit is contained in:
Elizabeth Engelman 2019-05-13 16:29:06 -05:00
parent d947c8f30a
commit 622ea44a6f
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
documentation/data-syncing.md
View File

@ -5,7 +5,10 @@ These commands are used to sync raw Ethereum data into Postgres, with varying le
Syncs block headers from a running Ethereum node into the VulcanizeDB table `headers`. Syncs block headers from a running Ethereum node into the VulcanizeDB table `headers`.
- Queries the Ethereum node using RPC calls. - Queries the Ethereum node using RPC calls.
- Validates headers from the last 15 blocks to ensure that data is up to date. - Validates headers from the last 15 blocks to ensure that data is up to date.
- Useful when you want a minimal baseline from which to track targeted data on the blockchain (e.g. individual smart contract storage values or event logs). - Useful when you want a minimal baseline from which to track targeted data on the blockchain (e.g. individual smart
contract storage values or event logs).
- Handles chain reorgs by [validating the most recent blocks' hashes](../pkg/history/header_validator.go). If the hash is
different from what we have already stored in the database, the header record will be updated.
#### Usage #### Usage
- Run: `./vulcanizedb headerSync --config <config.toml> --starting-block-number <block-number>` - Run: `./vulcanizedb headerSync --config <config.toml> --starting-block-number <block-number>`
@ -29,6 +32,8 @@ Syncs blocks, transactions, receipts and logs from a running Ethereum node into
- Queries the Ethereum node using RPC calls. - Queries the Ethereum node using RPC calls.
- Validates headers from the last 15 blocks to ensure that data is up to date. - Validates headers from the last 15 blocks to ensure that data is up to date.
- Useful when you want to maintain a broad cache of what's happening on the blockchain. - Useful when you want to maintain a broad cache of what's happening on the blockchain.
- Handles chain reorgs by [validating the most recent blocks' hashes](../pkg/history/header_validator.go). If the hash is
different from what we have already stored in the database, the header record will be updated.
#### Usage #### Usage
- Run `./vulcanizedb fullSync --config <config.toml> --starting-block-number <block-number>` - Run `./vulcanizedb fullSync --config <config.toml> --starting-block-number <block-number>`