Struct TtlLruLimit

pub struct TtlLruLimit { /* private fields */ }

Implementations

impl TtlLruLimit

pub fn new(size: usize, ttl: Duration, max: usize) -> Self

Creates a new TTL-based LRU limit with the specified parameters.

Arguments

• size - The maximum number of entries to store in the LRU cache
• ttl - The time-to-live duration after which entries are considered expired
• max - The maximum count allowed per key within the TTL window

pub fn new_compact(size: usize, ttl: Duration, max: usize) -> Self

Creates a new compact TTL-based LRU limit with the specified parameters.

Arguments

• size - The maximum number of entries to store in the LRU cache
• ttl - The time-to-live duration after which entries are considered expired

pub fn validate(&self, key: &str) -> bool

Validates whether a key has not exceeded its rate limit.

Arguments

• key - The key to validate

Returns

Returns true if the key is within its limit or has expired, false otherwise.

pub fn inc(&self, key: &str)

Increments the counter for the specified key. If the key doesn’t exist, creates a new entry with count 1. If the key exists but was reset (count = 0), updates its creation timestamp.

Arguments

• key - The key to increment