RefreshAhead class final
Refresh-ahead: after refreshAfter has elapsed since the last read,
the next get triggers a background refresh while still returning the
current (potentially stale) value. The cache is never cold.
Useful for high-read, low-staleness-tolerance data (e.g., product prices).
- Inheritance
-
- Object
- CachePolicy
- RefreshAhead
Constructors
- RefreshAhead({required Duration refreshAfter, Duration? ttl})
-
const
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- refreshAfter → Duration
-
How long after the last access before a background refresh is triggered.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- ttl → Duration?
-
Hard TTL — the entry is evicted if a background refresh hasn't completed
by this deadline. Prevents infinitely stale data.
final
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited