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StoragesHistory

reth_db

Struct StoragesHistory 

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

Stores pointers to block number changeset with changes for each storage 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 | StorageKey | 100
  • Address | StorageKey | 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 StoragePlainState.
  • If there were no shard we would get None entry or entry of different storage key.

Marker type representing a database table mapping StorageShardedKey to BlockNumberList.

Trait Implementations§

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impl Debug for StoragesHistory

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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 StoragesHistory
where IntegerList: Value + 'static,

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

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 = StorageShardedKey

Key element of Table. Read more
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type Value = IntegerList

Value element of Table.

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