WriteThroughCache<K, V extends Object> class

Wraps a synchronous Cache with an async loader, turning a cache miss into a single load whose result is stored (the read-through / write-through pattern apps re-implement around every remote fetch).

Concurrent misses for the SAME key share one in-flight load rather than each invoking loader — a thundering-herd guard. A load that throws is NOT cached and the error propagates to every waiter; the next call retries. Audited: 2026-06-12 11:26 EDT

Constructors

WriteThroughCache(Cache<K, V> _cache, Future<V> _loader(K key))

Wraps cache, filling misses by awaiting loader. Audited: 2026-06-12 11:26 EDT

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

getOrLoad(K key) → Future<V>

Returns the cached value for key; on a miss, loads it once via the loader, stores it, and returns it. Simultaneous misses for key await the same load. Audited: 2026-06-12 11:26 EDT

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