Enum TimeUnit 

pub enum TimeUnit {
    Seconds,
    Minutes,
    Hours,
    Days,
    Weeks,
    Months,
    Years,
    Ever,
}

Time unit definitions for interval configuration.

Represents different time granularities for event counting.

Calendar-Aligned Buckets vs Uniform Buckets

Default (calendar-aligned):

• Buckets snap to calendar boundaries in local time
• Days rotate at local midnight (12:00 AM)
• Weeks rotate Monday at midnight
• Months rotate on the 1st
• Years rotate January 1st

Uniform buckets (disable calendar feature):

• Buckets align to January 1st of the current year at 00:00 UTC
• Days = 24-hour periods from that point
• Weeks = 7-day periods
• Months = 30-day periods (not calendar months)
• Years = 365-day periods (ignores leap days)
• All counters of the same time unit have aligned start times

Why Calendar-Aligned by Default?

Best for client-side and user-facing use cases:

• Aligns to how users talk: “today”, “this week”, “this month”
• Day boundaries at local midnight (not arbitrary 24-hour windows)
• Matches how users think: “I used the app 3 times today”
• Works with daily/weekly/monthly goals and limits

Use uniform buckets (disable calendar feature) when you need:

• Consistent bucket sizes for statistical analysis
• Predictable memory usage (30 days ≈ 1 month)
• Industry-standard “30-day rolling window” (backend analytics)
• Better year approximation: 12 × 30 = 360 days (1.4% error vs 365)

TimeUnits are ordered from smallest to largest: Minutes < Hours < Days < Weeks < Months < Years < Ever

Ever is a special variant that represents “use the longest configured time unit for this event.” It is resolved lazily during query execution.

Variants

Seconds

Minutes

Hours

Days

Weeks

Months

Years

Ever

Implementations

impl TimeUnit

pub fn duration(&self) -> Duration

Returns the duration represented by this time unit.

Note: Months use a 30-day approximation, Years use 365 days.

Panics

Panics if called on TimeUnit::Ever, which has no fixed duration. Ever must be resolved to a concrete time unit before calling this method.

Trait Implementations

impl Clone for TimeUnit

fn clone(&self) -> TimeUnit

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TimeUnit

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TimeUnit

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<TimeUnit> for TimeWindow

fn from(unit: TimeUnit) -> Self

Converts to this type from the input type.

impl Hash for TimeUnit

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

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 TimeUnit

fn cmp(&self, other: &TimeUnit) -> 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 TimeUnit

fn eq(&self, other: &TimeUnit) -> 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 TimeUnit

fn partial_cmp(&self, other: &TimeUnit) -> 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 TimeUnit

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for TimeUnit

impl Eq for TimeUnit

impl StructuralPartialEq for TimeUnit