Struct EmbeddedMetrics 

#[non_exhaustive]
pub struct EmbeddedMetrics {
    pub hot_rows: u64,
    pub hot_bytes: u64,
    pub cold_segments: u64,
    pub tables: u64,
    pub wal_bytes: u64,
    pub persistent: bool,
}

v7.7.5 — observability snapshot returned by Database::metrics. Plain data, no allocations beyond what the struct itself takes; cheap to construct and cheap to serialise.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

hot_rows: u64

Total live row count across every user table (hot tier only — cold-tier rows live in segment files).

hot_bytes: u64

Sum of Table::hot_bytes across every user table. Tracks against the freezer’s hot_tier_bytes budget.

cold_segments: u64

Number of cold-tier segments registered in the catalog. Includes tombstoned slots (segments retired by compaction whose disk file may still be on disk).

tables: u64

User-table count (excludes any future engine-managed internal tables).

wal_bytes: u64

WAL size at last execute() / checkpoint(). Zero when the database is in-memory.

persistent: bool

true when the database was opened with open_path — i.e. WAL + checkpoint persistence is active.

Trait Implementations

impl Clone for EmbeddedMetrics

fn clone(&self) -> EmbeddedMetrics

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for EmbeddedMetrics

impl Debug for EmbeddedMetrics

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

Formats the value using the given formatter.

impl Eq for EmbeddedMetrics

impl PartialEq for EmbeddedMetrics

fn eq(&self, other: &EmbeddedMetrics) -> 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 StructuralPartialEq for EmbeddedMetrics