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.
Code example can be found in reth_provider::HistoricalStateProviderRef
Marker type representing a database table mapping StorageShardedKey
to BlockNumberList
.
Trait Implementations§
Source§impl Debug for StoragesHistory
impl Debug for StoragesHistory
Source§impl Table for StoragesHistorywhere
BlockNumberList: Value + 'static,
impl Table for StoragesHistorywhere
BlockNumberList: Value + 'static,
Auto Trait Implementations§
impl Freeze for StoragesHistory
impl RefUnwindSafe for StoragesHistory
impl Send for StoragesHistory
impl Sync for StoragesHistory
impl Unpin for StoragesHistory
impl UnwindSafe for StoragesHistory
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