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Graph/replacement-change-model-rebuild

Pattern

Model Rebuild on Update

replacement-change-model-rebuild

Observable list and table update paths can trigger full model rebuilds (e.g., list reversal/setAll, sort recreations), so change listeners and UI render cycles see replacement-style add/remove or wholesale redraws instead of incremental diffs, breaking expectations and performance.

Node Details

Public graph metadata

Updated7/15/2026

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30 linked nodes

the UI doesn’t update consistently, sometimes the count lags behind — when using useTransition. Tension: especially after fast re-renders or route changes. Outcome: Zustand state and Server Actions transitions aren’t syncing properly in React’s concurrent rendering mode.

Updating an input causes the entire React app to refresh/re-render, even though only part of the Zustand state should change.

Query callers must remember to destructure and call refetch manually after a mutation

should change, which then change the `labelIds$()` which should (but actually doesn't) trigger a reload of the query string with the new filter — this.friendService.labels$.set([{id: 1, id: 2}]). Tension: the `labels$()` should change, which then change the `labelIds$()`. Outcome: Has somebody already implemented it?

These Todo items can be "completed", which triggers a mutation call to the back-end but optimistically updates (via `setQueryData`) the individual item. Tension: Making these optimistic updates across multiple lists of Todos is fairly complex and feels inefficient. Outcome: then any child components that need to render that data can just get the Todo object from the react-query cache.

When user click this button I enable the `useGrocerAllNotifications` query and update `FlatList` data. Tension: it sometimes does not rerender. Outcome: Looks like the problem has been fixed.

NestJS hot reload does not pick up changes in referenced workspace packages

if i change some property on Vehicle model and run this code again, I don't see any change on table — Vehicle.metadata.create_all(engine). Tension: I want that change to be detected and automatically migrated to database. Outcome: once created, SQLModel will not attempt to change the schema of your database tables.

In a React/Framer Motion collapsible sidebar, the icon inside a memoized `SidebarItem` visually re-renders whenever `is_expanded` toggles, even though the icon prop itself is static and memoized. Console logs confirm the icon/component re-render occurs on expansion state changes.

the event keeps getting added multiple times instead of just once — Each time my component updates or the page re-renders. Tension: making my app slower. Outcome: but I need it to work every time the user double-clicks, without getting duplicated.

Redux-Toolkit Query polling performs the initial fetch and displays data, but once the polling interval elapses, no additional network requests are made and the UI does not update. Manual refetch works correctly.

When multiple counter buttons in the same cart component trigger RTK Query mutations, the loading state becomes shared, causing spinners to appear on all counters when only one item is being updated.

The reducer state is not updating correctly and subsequent renders fail because the counter value becomes invalid (e.g., NaN) instead of changing from its initial value.

Clicking the Edit button lets the user change a task title, but clicking Save does not update what’s shown in the UI. Redux state updates (payload changes), yet the new title disappears and the previous task is rendered.

These functions are get re-created, causing memoized children to re-render unnecessarily. — I have a dashboard with many components, and i try to pass functions as props to deeply nested children. Tension: Every time a parent re-renders, these functions are get re-created.

Filtering items by `isActive` works initially, but toggling an individual item's `isActive` in the UI doesn’t move it between the Active/Inactive views because the filtered list doesn’t rerender from the updated source data.

When a child component wrapper (ListWrap) filters and re-renders the list of message items, removing an item that is not last causes all subsequent items to be removed as well.

When ag-Grid data is updated every few seconds via async transactions, any in-progress filter changes selected in the filter popup (before clicking Apply) are applied to the grid. Additionally, the filter behavior is inconsistent when trying to have the filter update only after the user clicks Apply.

Resetting the timer by lifting/resetting state in the parent causes the app/game to become unresponsive due to frequent re-renders. The Timer component also attempts to reset its local state during render, leading to problematic behavior.

Changing the dropdown sort option causes the displayed list to update one step behind (e.g., selecting “A-Z” shows the previous “new to old” sort first).

In a React app, resizing the browser window causes a parent component to re-render and the child component(s) (e.g., <PaymentOption {...paymentProps} />) to re-render as well, even though the child’s content should not change with layout changes.

by selecting a column header - this occurs via table.sort(). Tension: Every sort rebuilds the entire model: You're replacing the model each time with a new SortableTableModel. Outcome: manual sorting while avoiding `table.sort()` is the best option.

runtime updates looked up rows by id only — After converting a memory events table to range partitioning by occurred_at. Tension: review found two production risks.

developers don't know how to trigger re-renders, bind CSS classes dynamically, or structure the component lifecycle — In s&box, building HUD and menu UI requires Razor components (PanelComponent), not Unity-style OnGUI or uGUI. Tension: BuildHash() is the key re-render trigger that many miss.

Developers building NPCs in s&box often use monolithic Update() methods with complex state machines. — in s&box. Tension: This becomes hard to extend and debug. Outcome: A task/schedule pattern provides clean separation of NPC behaviors.

SkinnedModelRenderer morph values in s&box are not automatically persisted in dupes or saves — and are not synced over the network. Tension: Developers who set morphs directly lose them on dupe/save/load and new clients don't see them. Outcome: developers who set morphs directly lose them on dupe/save/load and new clients don't see them.

recreate schedule/behavior objects every tick — Developers building NPCs in s&box. Tension: causing allocations. Outcome: The correct pattern caches schedules by type and reuses them, only reinitializing when a new schedule is selected.

visible flicker, collapses expanded UI sections, and loses scroll positions — Dashboard with SSE-driven updates (session cards, alert panels).

Switching waves to Gemini-hosted models and a local Ollama model required more than changing model strings — A local agent benchmark was hard-coded around one CLI runtime and its MCP tool naming convention. Tension: the new runtime emitted different JSON events and exposed MCP tools under different names.

naive optimistic updates either (a) flicker because the next server [REDACTED]shot wipes them or (b) get stuck because you can't — In a server-authoritative realtime app (game tick, collaborative doc). Tension: the next server [REDACTED]shot wipes them. Outcome: Switching to derive-from-[REDACTED]+[REDACTED] made the whole thing trivially correct.

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