Struct ResponseCache 

pub struct ResponseCache { /* private fields */ }

A cache for DNS responses.

Implementations

impl ResponseCache

pub fn new(capacity: u64, ttl_config: TtlConfig) -> ResponseCache

Construct a new response cache.

Arguments

• capacity - size in number of cached responses
• ttl_config - minimum and maximum TTLs for cached records

pub fn insert( &self, query: Query, result: Result<Message, NetError>, now: Instant, )

Insert a response into the cache.

pub fn get( &self, query: &Query, now: Instant, ) -> Option<Result<Message, NetError>>

Try to retrieve a cached response with the given query.

Trait Implementations

impl Clone for ResponseCache

fn clone(&self) -> ResponseCache

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ResponseCache

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

Formats the value using the given formatter.