Struct ReadRationing 

pub struct ReadRationing {
    pub master_read_percent: u8,
    /* private fields */
}

读写比例控制器：按比例把读请求路由到 master（强一致读）或 slave（弱一致读）

Fields

master_read_percent: u8

0..=100，表示有多少比例的读走 master 0 表示全部走 slave，100 表示全部走 master

Implementations

impl ReadRationing

pub fn new(master_read_percent: u8) -> Self

pub fn default_slave_only() -> Self

默认 0% 走 master（全部走 slave）

pub fn default_master_only() -> Self

默认 100% 走 master（强一致读）

pub fn should_read_master(&self) -> bool

决定本次读请求是否走 master

pub fn set_percent(&mut self, percent: u8)

修改比例（运行时热更新）

Trait Implementations

impl Clone for ReadRationing

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ReadRationing

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

Formats the value using the given formatter.

impl Default for ReadRationing

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ReadRationing

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ReadRationing

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.