Struct Moka 

pub struct Moka { /* private fields */ }

moka backend support.

Capabilities

This service can be used to:

• stat
• read
• write
• create_dir
• delete
• copy
• rename
• list
• presign
• blocking

Configuration

• name: Set the name for this cache instance.
• max_capacity: Set the max capacity of the cache.
• time_to_live: Set the time to live of the cache.
• time_to_idle: Set the time to idle of the cache.

You can refer to MokaBuilder’s docs for more information

Example

Via Builder

use anyhow::Result;
use opendal::services::Moka;
use opendal::Operator;

#[tokio::main]
async fn main() -> Result<()> {
    let mut builder = Moka::default()
        .name("opendal");

    let op: Operator = Operator::new(builder)?.finish();
    Ok(())
}

Implementations

impl MokaBuilder

pub fn new(builder: MokaCacheBuilder<String, MokaValue>) -> Self

Available on crate feature services-moka only.

Create a MokaBuilder with the given [moka::future::CacheBuilder].

Refer to moka::future::CacheBuilder

Example

let moka = Moka::new(
    MokaCacheBuilder::<String, MokaValue>::default()
        .name("demo")
        .max_capacity(1000)
        .time_to_live(Duration::from_secs(300))
        .weigher(|k, v| (k.len() + v.content.len()) as u32)
        .eviction_listener(|k: Arc<String>, v: MokaValue, cause: RemovalCause| {
            debug!(
                "moka cache eviction listener, key = {}, value = {:?}, cause = {:?}",
                k.as_str(), v.content.to_vec(), cause
            );
        })
);

pub fn name(self, v: &str) -> Self

Available on crate feature services-moka only.

Sets the name of the cache.

Refer to moka::future::CacheBuilder::name

pub fn max_capacity(self, v: u64) -> Self

Available on crate feature services-moka only.

Sets the max capacity of the cache.

Refer to moka::future::CacheBuilder::max_capacity

pub fn time_to_live(self, v: Duration) -> Self

Available on crate feature services-moka only.

Sets the time to live of the cache.

Refer to moka::future::CacheBuilder::time_to_live

pub fn time_to_idle(self, v: Duration) -> Self

Available on crate feature services-moka only.

Sets the time to idle of the cache.

Refer to moka::future::CacheBuilder::time_to_idle

pub fn root(self, path: &str) -> Self

Available on crate feature services-moka only.

Set the root path of this backend

Trait Implementations

impl Builder for MokaBuilder

Available on crate feature services-moka only.

type Config = MokaConfig

Associated configuration for this builder.

fn build(self) -> Result<impl Access>

Consume the accessor builder to build a service.

impl Debug for MokaBuilder

Available on crate feature services-moka only.

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

Formats the value using the given formatter.

impl Default for MokaBuilder

Available on crate feature services-moka only.

fn default() -> MokaBuilder

Returns the “default value” for a type.