Enum ErrorKind 

#[non_exhaustive]
pub enum ErrorKind {
    ResponseError,
    ParseError,
    AuthenticationFailed,
    PermissionDenied,
    TypeError,
    ExecAbortError,
    BusyLoadingError,
    NoScriptError,
    InvalidClientConfig,
    Moved,
    Ask,
    TryAgain,
    ClusterDown,
    CrossSlot,
    MasterDown,
    IoError,
    FatalSendError,
    FatalReceiveError,
    ClientError,
    ExtensionError,
    ReadOnly,
    MasterNameNotFoundBySentinel,
    NoValidReplicasFoundBySentinel,
    EmptySentinelList,
    NotBusy,
    AllConnectionsUnavailable,
    ConnectionNotFoundForRoute,
    RESP3NotSupported,
    NotAllSlotsCovered,
    UserOperationError,
    ProtocolDesync,
}

An enum of all error kinds.

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.

ResponseError

The server generated an invalid response.

ParseError

The parser failed to parse the server response.

AuthenticationFailed

The authentication with the server failed.

PermissionDenied

User lacks permission for the requested operation (ACL).

TypeError

Operation failed because of a type mismatch.

ExecAbortError

A script execution was aborted.

BusyLoadingError

The server cannot response because it’s loading a dump.

NoScriptError

A script that was requested does not actually exist.

InvalidClientConfig

An error that was caused because the parameter to the client were wrong.

Moved

Raised if a key moved to a different node.

Ask

Raised if a key moved to a different node but we need to ask.

TryAgain

Raised if a request needs to be retried.

ClusterDown

Raised if a valkey cluster is down.

CrossSlot

A request spans multiple slots

MasterDown

A cluster master is unavailable.

IoError

This kind is returned if the redis error is one that is not native to the system. This is usually the case if the cause is another error.

FatalSendError

An error indicating that a fatal error occurred while attempting to send a request to the server, meaning the connection was closed before the request was transmitted. Since the server did not process the request, it is safe to retry the request.

FatalReceiveError

An error indicating that a fatal error occurred while trying to receive a response, likely due to the closure of the underlying connection. It is unclear whether the server processed the request, making it unsafe to retry the request.

ClientError

An error raised that was identified on the client before execution.

ExtensionError

An extension error. This is an error created by the server that is not directly understood by the library.

ReadOnly

Attempt to write to a read-only server

MasterNameNotFoundBySentinel

Requested name not found among masters returned by the sentinels

NoValidReplicasFoundBySentinel

No valid replicas found in the sentinels, for a given master name

EmptySentinelList

At least one sentinel connection info is required

NotBusy

Attempted to kill a script/function while they weren’t executing

AllConnectionsUnavailable

Used when no valid node connections remain in the cluster connection

ConnectionNotFoundForRoute

Used when a connection is not found for the specified route.

RESP3NotSupported

Redis Servers prior to v6.0.0 doesn’t support RESP3. Try disabling resp3 option

NotAllSlotsCovered

Not all slots are covered by the cluster

UserOperationError

Used when an error occurs on when user perform wrong usage of management operation. E.g. not allowed configuration change.

ProtocolDesync

Response synchronization lost between commands and responses. The connection protocol is broken and must be reestablished.

Trait Implementations

impl Clone for ErrorKind

fn clone(&self) -> ErrorKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ErrorKind

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

Formats the value using the given formatter.

impl Display for ErrorKind

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

Formats the value using the given formatter.

impl PartialEq for ErrorKind

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ErrorKind

impl Eq for ErrorKind

impl StructuralPartialEq for ErrorKind