Struct Observer 

pub struct Observer { /* private fields */ }

Cache-side observer for runtime stats, debug traces, and optional cache tracing.

Implementations

impl Observer

pub fn new() -> Self

Create a new observer with all counters and traces reset.

pub fn runtime_snapshot(&self) -> RuntimeStatsSnapshotInner

Snapshot runtime counters and reset them to zero.

pub fn consume_event_trace(&self) -> EventTrace

Consume and clear the in-memory debug event trace.

pub fn enable_cache_trace(&self)

Enable recording cache trace events (for offline analysis).

pub fn disable_cache_trace(&self)

Disable recording cache trace events.

pub fn flush_cache_trace(&self, to_file: impl AsRef<Path>)

Flush recorded cache trace events to a Parquet file.

pub fn cache_tracer(&self) -> &CacheTracer

Access the underlying cache tracer.

Trait Implementations

impl Debug for Observer

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

Formats the value using the given formatter.

impl Default for Observer

fn default() -> Self

Returns the “default value” for a type.