Struct CategorySampler 

pub struct CategorySampler { /* private fields */ }

Best-effort fixed-window sampler that limits events per category key.

Each unique key gets its own window. When a key’s budget is exhausted for the current window, further events with that key are suppressed until the window resets. An eviction policy prevents unbounded memory growth when the number of distinct keys exceeds max_keys.

Implementations

impl CategorySampler

pub fn new(max_events_per_window: u32, window_ms: i64, max_keys: usize) -> Self

Creates a sampler with custom parameters.

pub fn allow(&self, key: &str, now_ms: i64) -> bool

Returns true when an event with the given key should be emitted.

If the mutex is poisoned the call conservatively returns true so events are never silently dropped due to an unrelated panic.

Trait Implementations

impl Debug for CategorySampler

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

Formats the value using the given formatter.

impl Default for CategorySampler

fn default() -> Self

Returns the “default value” for a type.