Enum Error 

#[non_exhaustive]
pub enum Error {
    CacheServiceConfig(CacheServiceError),
    Io(Error),
    Timeout,
    Unavailable,
    Overloaded,
    Server(String),
    Client(String),
    Protocol(String),
    Desynced(String),
    InvalidKey(&'static str),
    Unsupported(&'static str),
    Decode(String),
}

Errors returned by the memcached client.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

CacheServiceConfig(CacheServiceError)

The cache-service YAML or selected namespace was invalid.

Io(Error)

Transport-level I/O error on an established connection.

Timeout

An operation exceeded the configured timeout.

Unavailable

The physical node has not connected yet or is reconnecting.

Overloaded

The physical node’s bounded request queue is full.

Server(String)

The server reported a SERVER_ERROR (text) or a server-side status.

Client(String)

The server reported a CLIENT_ERROR / invalid-argument style failure.

Protocol(String)

The response could not be parsed / violated the protocol.

Desynced(String)

The connection is out of sync: a response frame did not match the request that was sent (e.g. a leftover frame from a timed-out operation). The connection must be dropped, not reused.

InvalidKey(&'static str)

The key was empty, too long, or contained control/space characters.

Unsupported(&'static str)

A stored value used a feature this client does not decode (QuickLZ compression or Java object serialization).

Decode(String)

A typed decode of a crate::Value did not match the stored flags.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<CacheServiceError> for Error

fn from(source: CacheServiceError) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(err: Error) -> Self

Converts to this type from the input type.