kimi-code/apps
qer 444e6b15f0
fix(web): cap live session subscriptions to reduce lag with many sessions (#1320)
* fix(web): cap live session subscriptions to reduce lag with many sessions

Every opened session stayed subscribed to its WebSocket event stream across reconnects, so opening hundreds of sessions turned background events into a constant reducer and sidebar recompute storm. Keep only the four most-recently-opened sessions subscribed; evicted sessions resume from their tracked cursor on re-open.

* fix(web): reset cursor for sessions evicted from the subscription cap

Some session events (status_changed, meta_updated, ...) are broadcast to every connection and still advance lastSeqBySession for an unsubscribed session. If an evicted session emits per-session durable events and then a global event, the cursor jumps past the missed events, so resuming from it later would skip them and leave the reopened session stale. Track evicted sessions and reset their cursor on the next re-subscribe so the daemon replays or snapshots what was missed.

* fix(web): rebuild evicted sessions from a snapshot on re-open

Two fixes for the subscription cap:

- Re-opening a session that was evicted now rebuilds it from a snapshot instead of resuming from seq 0. Replaying from zero made the projector regenerate assistant/tool message ids, which duplicated the already-loaded transcript; resuming from the kept cursor could skip per-session events that arrived while unsubscribed.

- Eviction now skips the active session wherever it sits in the list, instead of breaking when it lands at the tail. First-time opens retain only after an awaited snapshot, so rapid clicks can complete out of order and leave the active session at the tail, which previously let the list grow past the cap.

* fix(web): keep stale cursor marker until snapshot succeeds

Re-opening an evicted session deleted the stale-cursor marker before the snapshot ran. If the snapshot failed transiently, the marker was gone and a later re-open would fall back to subscribeToSessionEvents, resuming from a cursor that may have skipped per-session events while evicted. Read the marker instead of deleting it, and let syncSessionFromSnapshot clear it once the snapshot succeeds.
2026-07-02 21:48:47 +08:00
..
kimi-code fix(pi-tui): repaint viewport in place when content collapses above it (#1315) 2026-07-02 20:52:37 +08:00
kimi-desktop chore(kimi-desktop): rename installers to kcd-beta-alpha-crazy-internal (#1267) 2026-07-01 19:50:11 +08:00
kimi-web fix(web): cap live session subscriptions to reduce lag with many sessions (#1320) 2026-07-02 21:48:47 +08:00
vis feat(agent-core): keep head and tail of user messages during compaction (#1313) 2026-07-02 19:24:37 +08:00