Feed Access Patterns

story_id	consumer	verb	by	filter	order	limit	consistency	SLA_ms
FEED-001	UserSvc	Get User	user_id			1	STRONG	50
FEED-002	PostSvc	List Posts	author_id		created_at DESC	50	EVENTUAL	100
FEED-003	FeedSvc	Get Feed	user_id	shard=*	created_at DESC	50	EVENTUAL	120
FEED-004	PostSvc	Get Post	post_id			1	STRONG	60
FEED-005	EngageSvc	List Likes	post_id		created_at DESC	200	EVENTUAL	150
FEED-006	EngageSvc	List Comments	post_id		created_at ASC	200	EVENTUAL	180
FEED-007	SearchSvc	Posts by Tag	tag		created_at DESC	200	EVENTUAL	200
FEED-008	GraphSvc	Followers of	user_id		created_at DESC	500	EVENTUAL	250
FEED-009	NotifySvc	Notifications	user_id	read=false	created_at DESC	50	EVENTUAL	120
FEED-010	Ops	Top Authors	period		follower_count DESC	100	EVENTUAL	500

Shard home feed SK (e.g., <ts>#<shard>#POST#<id>) to avoid hot keys.