Struct StorageStats 

pub struct StorageStats {
    pub current_key_bytes: u64,
    pub current_value_bytes: u64,
    pub historical_key_bytes: u64,
    pub historical_value_bytes: u64,
    pub current_count: u64,
    pub historical_count: u64,
    pub cdc_key_bytes: u64,
    pub cdc_value_bytes: u64,
    pub cdc_count: u64,
}

Storage statistics for a single object or aggregate.

Tracks both “current” (latest MVCC version) and “historical” (older versions) separately to understand storage overhead from versioning.

Fields

current_key_bytes: u64

Total bytes used by keys for latest versions

current_value_bytes: u64

Total bytes used by values for latest versions

historical_key_bytes: u64

Total bytes used by keys for older MVCC versions

historical_value_bytes: u64

Total bytes used by values for older MVCC versions

current_count: u64

Number of current (latest version) entries

historical_count: u64

Number of historical (older version) entries

cdc_key_bytes: u64

Total CDC key bytes attributed to this object

cdc_value_bytes: u64

Total CDC value bytes attributed to this object

cdc_count: u64

Number of CDC entries attributed to this object

Implementations

impl StorageStats

pub fn new() -> StorageStats

Create new empty stats.

pub fn total_bytes(&self) -> u64

Total bytes across current and historical data.

pub fn current_bytes(&self) -> u64

Total bytes for current (latest) data only.

pub fn historical_bytes(&self) -> u64

Total bytes for historical (older) data only.

pub fn cdc_total_bytes(&self) -> u64

Total CDC bytes for this object.

pub fn total_count(&self) -> u64

Total entry count across current and historical.

pub fn record_cdc(&mut self, key_bytes: u64, value_bytes: u64, count: u64)

Record CDC bytes for a change attributed to this object.

pub fn record_insert(&mut self, key_bytes: u64, value_bytes: u64)

Record a new entry (insert of a key that didn’t exist).

pub fn record_update( &mut self, new_key_bytes: u64, new_value_bytes: u64, old_key_bytes: u64, old_value_bytes: u64, )

Record an update (new version of existing key).

The old version moves from current to historical.

pub fn record_delete( &mut self, tombstone_key_bytes: u64, old_key_bytes: u64, old_value_bytes: u64, )

Record a delete (tombstone for existing key).

The old version moves to historical, tombstone key added to historical.

pub fn record_drop(&mut self, key_bytes: u64, value_bytes: u64)

Record a drop (physical removal of a historical version entry).

Unlike delete, drop doesn’t create tombstones - it physically removes entries from storage. Used for MVCC cleanup of old versions.

Trait Implementations

impl AddAssign for StorageStats

fn add_assign(&mut self, rhs: StorageStats)

Performs the += operation.

impl Clone for StorageStats

fn clone(&self) -> StorageStats

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for StorageStats

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

Formats the value using the given formatter.

impl Default for StorageStats

fn default() -> StorageStats

Returns the “default value” for a type.

impl PartialEq for StorageStats

fn eq(&self, other: &StorageStats) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for StorageStats

impl StructuralPartialEq for StorageStats