Enum NoCacheReason 

pub enum NoCacheReason {
    NeverEnabled,
    OriginNotCache,
    ResponseTooLarge,
    PredictedResponseTooLarge,
    StorageError,
    InternalError,
    Deferred,
    DeclinedToUpstream,
    UpstreamError,
    CacheLockGiveUp,
    CacheLockTimeout,
    CacheLockRetryLimit,
    Custom(&'static str),
}

The possible reasons for not caching

Variants

NeverEnabled

Caching is not enabled to begin with

OriginNotCache

Origin directives indicated this was not cacheable

ResponseTooLarge

Response size was larger than the cache’s configured maximum asset size

PredictedResponseTooLarge

Disabling caching due to unknown body size and previously exceeding maximum asset size; the asset is otherwise cacheable, but cache needs to confirm the final size of the asset before it can mark it as cacheable again.

StorageError

Due to internal caching storage error

InternalError

Due to other types of internal issues

Deferred

The response may be cacheable, but this request should not fill the cache.

This can happen when an admission policy defers an absent key, or when the cache predictor bypassed lookup and the response cannot safely be admitted by the current request.

DeclinedToUpstream

Due to the proxy upstream filter declining the current request from going upstream

UpstreamError

Due to the upstream being unreachable or otherwise erroring during proxying

CacheLockGiveUp

The writer of the cache lock sees that the request is not cacheable (Could be OriginNotCache)

CacheLockTimeout

This request waited too long for the writer of the cache lock to finish, so this request will fetch from the origin without caching

CacheLockRetryLimit

This request retried cache lookup too many times after waiting behind cache locks, so this request will fetch from the origin without caching.

Custom(&'static str)

Other custom defined reasons

Implementations

impl NoCacheReason

pub fn as_str(&self) -> &'static str

Convert NoCacheReason as str, for logging and debugging.

Trait Implementations

impl Clone for NoCacheReason

fn clone(&self) -> NoCacheReason

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for NoCacheReason

impl Debug for NoCacheReason

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

Formats the value using the given formatter.

impl Eq for NoCacheReason

impl PartialEq for NoCacheReason

fn eq(&self, other: &NoCacheReason) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for NoCacheReason