DejaOptions

Global cache defaults, overridable per query via QueryParameters<T> and per key prefix via DejaClient.SetDefaults. 

public sealed class DejaOptions

Properties#

Property TypeDefaultDescription
DefaultStaleTime TimeSpan<code>TimeSpan.Zero</code>How long after a successful fetch data is considered fresh. While fresh, a keyed Execute serves the cache and does not refetch.
DefaultCacheTime TimeSpan<code>5 minutes</code>How long an entry with zero subscribers survives before eviction. A component remounting within this window gets its data instantly.
DefaultRefetchOnMount RefetchOnMount<code>IfStale</code>Whether a keyed Execute that finds cached data refetches in the background.
MaxEntries int?<code>null (no cap)</code>Optional hard cap on cache entries. When exceeded, least-recently-used entries with no subscribers are evicted first.
EvictionInterval TimeSpan<code>1 minute</code>How often the eviction sweep runs.
StructuralComparison bool<code>false</code>When true, an entry that refetches to a value equal to the current one (per EqualityComparer<T>.Default) keeps its old reference and skips notifying subscribers, so components don't re-render for identical data.
TimeProvider TimeProvider<code>TimeProvider.System</code>Clock used for staleness and eviction; swap for a fake in tests.
Zero stale time is not zero requests

The default stale time of TimeSpan.Zero means cached data renders instantly but is always revalidated in the background on the next mount — "cached" does not mean "no request" unless you raise it.

QueryDefaults#

QueryDefaults#

public sealed class QueryDefaults { public TimeSpan? StaleTime { get; set; } public TimeSpan? CacheTime { get; set; } public RefetchOnMount? RefetchOnMount { get; set; } }

Per-prefix defaults registered with DejaClient.SetDefaults. Every property left null falls through to a shorter matching prefix, then to DejaOptions. Per-query values on QueryParameters<T> beat both.

client.SetDefaults(QueryKey.Of("countries"), new QueryDefaults
{
    StaleTime = TimeSpan.FromHours(1),
    RefetchOnMount = RefetchOnMount.Never,
});