Struct SeqId 

pub struct SeqId(/* private fields */);

Sequence ID for MVCC versioning

Internally uses Snowflake ID format (64 bits):

• 41 bits: timestamp in milliseconds since custom epoch
• 10 bits: machine/worker ID
• 12 bits: sequence number

MVCC Architecture: Used as _seq column for version tracking Storage key format: {user_id}:{_seq} or just {_seq} for shared tables

Implementations

impl SeqId

pub const EPOCH: u64 = 1704067200000

Custom epoch: 2024-01-01 00:00:00 UTC (same as SnowflakeGenerator)

pub fn new(snowflake_id: i64) -> SeqId

Create a new SeqId from a Snowflake ID

pub fn from_i64(value: i64) -> SeqId

Create SeqId from raw i64 value

pub fn as_i64(&self) -> i64

Get the raw i64 value

pub fn timestamp_millis(&self) -> u64

Extract timestamp in milliseconds since Unix epoch

This is useful for debugging, logging, and time-based queries.

pub fn timestamp_seconds(&self) -> u64

Extract timestamp in whole seconds since Unix epoch

pub fn age_seconds(&self, now_millis: u64) -> u64

Compute how many whole seconds old this SeqId is relative to now_millis

pub fn timestamp(&self) -> SystemTime

Extract timestamp as SystemTime

pub fn worker_id(&self) -> u16

Extract worker ID (0-1023)

pub fn sequence(&self) -> u16

Extract sequence number (0-4095)

pub fn from_string(s: &str) -> Result<SeqId, String>

Parse from string representation

pub fn to_bytes(&self) -> [u8; 8]

Convert to bytes (big-endian for consistent ordering in RocksDB)

pub fn from_bytes(bytes: &[u8]) -> Result<SeqId, String>

Parse from bytes (big-endian)

pub fn max_id_for_timestamp(timestamp_millis: u64) -> Result<SeqId, String>

Return the maximum possible SeqId for the provided timestamp.

This packs the timestamp together with the largest worker/sequence values so the returned SeqId encompasses every Snowflake generated at or before timestamp_millis.

Trait Implementations

impl Clone for SeqId

fn clone(&self) -> SeqId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SeqId

impl Debug for SeqId

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SeqId

fn deserialize<D>( deserializer: D, ) -> Result<SeqId, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for SeqId

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

Formats the value using the given formatter.

impl Eq for SeqId

impl From<i64> for SeqId

fn from(value: i64) -> SeqId

Converts to this type from the input type.

impl Hash for SeqId

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for SeqId

fn cmp(&self, other: &SeqId) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for SeqId

fn eq(&self, other: &SeqId) -> 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 PartialOrd for SeqId

fn partial_cmp(&self, other: &SeqId) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for SeqId

fn serialize<S>( &self, serializer: S, ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl StorageKey for SeqId

fn storage_key(&self) -> Vec<u8>

Serialize this key to bytes for storage using order-preserving encoding.

fn from_storage_key(bytes: &[u8]) -> Result<SeqId, String>

Deserialize this key from bytes

impl StructuralPartialEq for SeqId