chore: refresh gramsrv public release

internal/rpc/story_pinned_cache.go

@@ -0,0 +1,60 @@
+package rpc
+
+import (
+	"context"
+	"time"
+
+	"telesrv/internal/domain"
+	"telesrv/internal/readmodelcache"
+)
+
+// storyPinnedAvailableCache 缓存 (viewer,peer)→是否有置顶故事,由统一缓存原语承载
+// (LRU 单条驱逐 / epoch 守卫 / 内建 singleflight;纯 TTL,无版本闸门)。
+type storyPinnedAvailableCache struct {
+	cache *readmodelcache.Cache[storyProjectionCacheKey, bool]
+}
+
+func newStoryPinnedAvailableCache(now func() time.Time) *storyPinnedAvailableCache {
+	return &storyPinnedAvailableCache{
+		cache: readmodelcache.New[storyProjectionCacheKey, bool](readmodelcache.Config[storyProjectionCacheKey, bool]{
+			MaxEntries: storyProjectionCacheMaxEntries,
+			TTL:        storyPinnedStoriesCacheTTL,
+			Now:        now,
+		}),
+	}
+}
+
+func (c *storyPinnedAvailableCache) getOrLoad(ctx context.Context, viewerUserID int64, peer domain.Peer, load func() (bool, error)) (bool, error) {
+	if c == nil || viewerUserID == 0 || peer.ID == 0 {
+		return load()
+	}
+	return c.cache.GetOrLoad(ctx, storyProjectionCacheKey{viewerUserID: viewerUserID, peer: peer}, load)
+}
+
+func (c *storyPinnedAvailableCache) Delete(viewerUserID int64, peer domain.Peer) {
+	if c == nil || viewerUserID == 0 || peer.ID == 0 {
+		return
+	}
+	c.cache.Invalidate(storyProjectionCacheKey{viewerUserID: viewerUserID, peer: peer})
+}
+
+func (c *storyPinnedAvailableCache) DeleteViewer(viewerUserID int64) {
+	if c == nil || viewerUserID == 0 {
+		return
+	}
+	c.cache.InvalidateWhere(func(k storyProjectionCacheKey) bool { return k.viewerUserID == viewerUserID })
+}
+
+func (c *storyPinnedAvailableCache) DeletePeer(peer domain.Peer) {
+	if c == nil || peer.ID == 0 {
+		return
+	}
+	c.cache.InvalidateWhere(func(k storyProjectionCacheKey) bool { return k.peer == peer })
+}
+
+func (c *storyPinnedAvailableCache) Flush() {
+	if c == nil {
+		return
+	}
+	c.cache.Flush()
+}