Struct DnsCache 

pub struct DnsCache { /* private fields */ }

DNS cache with LRU eviction and TTL-based expiry

Implementations

impl DnsCache

pub fn new() -> Self

Create a new DNS cache

pub fn lookup( &mut self, name: &str, rtype: DnsRecordType, ) -> Option<Vec<DnsRecord>>

Look up a cached record by name and type

pub fn insert(&mut self, name: &str, record: DnsRecord, ttl: u32)

Insert a record into the cache with the given TTL

pub fn evict_expired(&mut self, now: u64)

Remove all expired entries

pub fn len(&self) -> usize

Return the number of cached entries

pub fn is_empty(&self) -> bool

Check if cache is empty

pub fn clear(&mut self)

Clear all entries

Trait Implementations

impl Default for DnsCache

Available on crate feature alloc only.

fn default() -> Self

Returns the “default value” for a type.