AccountsHistory

reth_db

Struct AccountsHistory 

pub struct AccountsHistory { /* private fields */ }
Expand description

Stores pointers to block changeset with changes for each account key.

Last shard key of the storage will contain u64::MAX BlockNumber, this would allows us small optimization on db access when change is in plain state.

Imagine having shards as:

  • Address | 100
  • Address | u64::MAX

What we need to find is number that is one greater than N. Db seek function allows us to fetch the shard that equal or more than asked. For example:

  • For N=50 we would get first shard.
  • for N=150 we would get second shard.
  • If max block number is 200 and we ask for N=250 we would fetch last shard and know that needed entry is in AccountPlainState.
  • If there were no shard we would get None entry or entry of different storage key.

Code example can be found in reth_provider::HistoricalStateProviderRef

Marker type representing a database table mapping ShardedKey<Address> to BlockNumberList.

Trait Implementations§

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impl Debug for AccountsHistory

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fn fmt(&self, _: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Table for AccountsHistory
where IntegerList: Value + 'static,

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const NAME: &'static str = table_names::AccountsHistory

The table’s name.
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const DUPSORT: bool = false

Whether the table is also a DUPSORT table.
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type Key = ShardedKey<Address>

Key element of Table. Read more
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type Value = IntegerList

Value element of Table.

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fn from_recovered_tx(tx: &&T, sender: Address) -> TxEnv

Builds a TxEnv from a transaction and a sender address.
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Size: 0 bytes