Struct BloomChainMeta 

pub struct BloomChainMeta {
    pub base: KeyMeta,
    pub n_filters: u16,
    pub expansion: u16,
    pub base_capacity: u32,
    pub error_rate: f64,
    pub bloom_bytes: u32,
}

Bloom filter chain metadata (aligned with Apache Kvrocks BloomChainMetadata 46-byte format). 布隆过滤器链元数据（对标 Apache Kvrocks BloomChainMetadata 46字节）

Fields

base: KeyMeta

n_filters: u16

expansion: u16

base_capacity: u32

error_rate: f64

bloom_bytes: u32

Implementations

impl BloomChainMeta

pub const ENCODED_SIZE: usize

pub fn new( base_capacity: u32, error_rate: f64, expansion: u16, version: u64, expire_at: u64, bloom_bytes: u32, ) -> Self

pub const fn is_scaling(&self) -> bool

pub fn is_expired(&self, now_ms: u64) -> bool

pub fn get_capacity(&self) -> u32

pub fn sub_filter_capacity(&self, filter_index: u16) -> u32

pub fn encode(&self) -> [u8; 46]

pub fn decode(bytes: &[u8]) -> Option<Self>

Trait Implementations

impl Clone for BloomChainMeta

fn clone(&self) -> BloomChainMeta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BloomChainMeta

impl Debug for BloomChainMeta

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

Formats the value using the given formatter.

impl<'__de> Decode<'__de> for BloomChainMeta

where '__de:,

impl Encode for BloomChainMeta

impl MetaOps for BloomChainMeta

const TAG: &[u8]

Metadata key tag slice (e.g. b"sm", b"hm"). meta key 标签（如 b"sm", b"hm"），用于 check_key_not_other_type

type EncodedBytes = [u8; 46]

fn decode(bytes: &[u8]) -> Option<Self>

fn is_expired(&self, now_ms: u64) -> bool

fn encode_bytes(&self) -> Self::EncodedBytes

Encoded bytes slice for storage write operations without heap allocation. 编码后的字节，用于写入存储（零堆分配）

fn base(&self) -> &KeyMeta

Returns immutable reference to base KeyMeta. 获取 base 引用（访问 expire_at / ttl 等通用字段）

fn base_mut(&mut self) -> &mut KeyMeta

Returns mutable reference to base KeyMeta. 获取 base 可变引用（修改 expire_at）

impl PartialEq for BloomChainMeta

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for BloomChainMeta