Struct redis::Client

pub struct Client { /* fields omitted */ }

The client type.

Methods

impl Client

The client acts as connector to the redis server. By itself it does not do much other than providing a convenient way to fetch a connection from it. In the future the plan is to provide a connection pool in the client.

When opening a client a URL in the following format should be used:

redis://host:port/db

Example usage::

let client = redis::Client::open("redis://127.0.0.1/").unwrap();
let con = client.get_connection().unwrap();

pub fn open<T: IntoConnectionInfo>(params: T) -> RedisResult<Client>

Connects to a redis server and returns a client. This does not actually open a connection yet but it does perform some basic checks on the URL that might make the operation fail.

pub fn get_connection(&self) -> RedisResult<Connection>

Instructs the client to actually connect to redis and returns a connection object. The connection object can be used to send commands to the server. This can fail with a variety of errors (like unreachable host) so it's important that you handle those errors.

pub fn get_connection_with_timeout(
    &self,
    timeout: Duration
) -> RedisResult<Connection>

Instructs the client to actually connect to redis with specified timeout and returns a connection object. The connection object can be used to send commands to the server. This can fail with a variety of errors (like unreachable host) so it's important that you handle those errors.

pub async fn get_async_connection<'_>(&'_ self) -> RedisResult<Connection>

Returns an async connection from the client.

pub async fn get_multiplexed_tokio_connection<'_>(
    &'_ self
) -> RedisResult<MultiplexedConnection>

Returns an async multiplexed connection from the client.

A multiplexed connection can be cloned, allowing requests to be be sent concurrently on the same underlying connection (tcp/unix socket).

This requires the tokio-executor feature as it uses the default tokio executor.

pub async fn get_multiplexed_async_connection<'_>(
    &'_ self
) -> RedisResult<(MultiplexedConnection, impl Future<Output = ()>)>

Returns an async multiplexed connection from the client and a future which must be polled to drive any requests submitted to it (see get_multiplexed_tokio_connection).

A multiplexed connection can be cloned, allowing requests to be be sent concurrently on the same underlying connection (tcp/unix socket).

Trait Implementations

impl Clone for Client

fn clone(&self) -> Client

Returns a copy of the value.

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

Performs copy-assignment from source.

impl ConnectionLike for Client

fn req_packed_command(&mut self, cmd: &[u8]) -> RedisResult<Value>

Sends an already encoded (packed) command into the TCP socket and reads the single response from it.

fn req_packed_commands(
    &mut self,
    cmd: &[u8],
    offset: usize,
    count: usize
) -> RedisResult<Vec<Value>>

Sends multiple already encoded (packed) command into the TCP socket and reads count responses from it. This is used to implement pipelining.

fn get_db(&self) -> i64

Returns the database this connection is bound to. Note that this information might be unreliable because it's initially cached and also might be incorrect if the connection like object is not actually connected.

fn check_connection(&mut self) -> bool

Check that all connections it has are available (PING internally).

fn is_open(&self) -> bool

Returns the connection status.

impl Debug for Client

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

Formats the value using the given formatter.