packages/effect-fc/src/Query.ts

@@ -1,4 +1,4 @@
-import { type Cause, type Context, DateTime, type Duration, Effect, Exit, Fiber, HashMap, identity, Option, Pipeable, Predicate, type Scope, Stream, Subscribable, SubscriptionRef } from "effect"
+import { type Cause, Console, type Context, DateTime, type Duration, Effect, Exit, Fiber, HashMap, identity, Option, Pipeable, Predicate, type Scope, Stream, Subscribable, SubscriptionRef } from "effect"
 import * as QueryClient from "./QueryClient.js"
 import * as Result from "./Result.js"
 
@@ -195,13 +195,18 @@ extends Pipeable.Class() implements Query<K, A, E, R, P> {
         Scope.Scope | QueryClient.QueryClient | R
     > {
         return Effect.andThen(this.getCacheEntry(key), Option.match({
-            onSome: entry => QueryClient.isQueryClientCacheEntryStale(entry, this.staleTime)
-                ? Effect.succeed(Subscribable.make({
-                    get: Effect.succeed(entry.result as Result.Result<A, E, P>),
-                    get changes() { return Stream.make(entry.result as Result.Result<A, E, P>) },
-                }))
-                : this.start(key, Result.willRefresh(entry.result) as Result.Final<A, E, P>),
-            onNone: () => this.start(key, initial),
+            onSome: entry => Effect.andThen(
+                QueryClient.isQueryClientCacheEntryStale(entry, this.staleTime),
+                isStale => isStale
+                    ? this.start(key, Result.willRefresh(entry.result) as Result.Final<A, E, P>)
+                    : Effect.succeed(Subscribable.make({
+                        get: Effect.succeed(entry.result as Result.Result<A, E, P>),
+                        get changes() { return Stream.make(entry.result as Result.Result<A, E, P>) },
+                    })),
+            ),
+            onNone: () => this.start(key, initial).pipe(
+                Effect.tap(Console.log("Cache missed"))
+            ),
         }))
     }
 

packages/effect-fc/src/QueryClient.ts

@@ -111,5 +111,5 @@ export const isQueryClientCacheEntryStale = (
     staleTime: Duration.DurationInput,
 ): Effect.Effect<boolean> => Effect.andThen(
     DateTime.now,
-    now => Duration.lessThan(DateTime.distanceDuration(self.createdAt, now), staleTime),
+    now => Duration.greaterThanOrEqualTo(DateTime.distanceDuration(self.createdAt, now), staleTime),
 )

packages/example/src/routes/query.tsx

@@ -28,6 +28,7 @@ const ResultView = Component.makeUntraced("Result")(function*() {
                 Effect.andThen(response => response.json),
                 Effect.andThen(Schema.decodeUnknown(Post)),
             ),
+            staleTime: "10 seconds",
         })
 
         const mutation = yield* Mutation.make({