Struct CheckpointCounters 

pub struct CheckpointCounters {

    pub last_observed_wal_pages: Option<u64>,
    pub truncate_attempts: u64,
    pub truncate_consecutive_failures: u64,
    pub checkpoint_skipped_ticks: u64,
    pub checkpoint_consecutive_skips: u64,
    pub checkpoint_last_skip_wal_pages: Option<u64>,
    pub checkpoint_pressure_elevated_ticks: u64,
    pub checkpoint_pressure_episodes_started: u64,
    pub checkpoint_pressure_episodes_recovered: u64,
    pub checkpoint_lifecycle_append_attempts: u64,
    pub checkpoint_lifecycle_append_failures: u64,
    pub checkpoint_lifecycle_enqueue_drops: u64,
    pub read_tx_max_age_evictions: u64,
}

ADR-091 checkpoint counters, read as one snapshot.

The two Option fields carry the u64::MAX “never observed” sentinel as None, so a caller serializing this never sees 18446744073709551615 where it means “no observation yet”.

Fields

last_observed_wal_pages: Option<u64>

truncate_attempts: u64

truncate_consecutive_failures: u64

checkpoint_skipped_ticks: u64

checkpoint_consecutive_skips: u64

checkpoint_last_skip_wal_pages: Option<u64>

checkpoint_pressure_elevated_ticks: u64

checkpoint_pressure_episodes_started: u64

checkpoint_pressure_episodes_recovered: u64

checkpoint_lifecycle_append_attempts: u64

checkpoint_lifecycle_append_failures: u64

checkpoint_lifecycle_enqueue_drops: u64

read_tx_max_age_evictions: u64

Cached-reader read transactions rolled back on reuse for exceeding read_tx_max_age (#1846) — the count of WAL snapshots actually released by that bound, not merely logged as stale.

Trait Implementations

impl Clone for CheckpointCounters

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CheckpointCounters

impl Debug for CheckpointCounters

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

Formats the value using the given formatter.

impl Eq for CheckpointCounters

impl PartialEq for CheckpointCounters

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for CheckpointCounters

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for CheckpointCounters