Bound long-lived frontend history caches

docs/release-control/v6/internal/subsystems/frontend-primitives.md

@@ -141,6 +141,7 @@ work extends shared components instead of creating new local variants.
 109. `frontend-modern/src/components/shared/summaryInteractionA11y.ts`
 110. `frontend-modern/src/components/shared/SummaryRowActionButton.tsx`
 111. `frontend-modern/src/hooks/createNonSuspendingQuery.ts`
+     111a. `frontend-modern/src/utils/storageSummaryCache.ts`
 112. `frontend-modern/src/components/shared/TableCardHeader.tsx`
 113. `frontend-modern/src/components/shared/UpgradeLink.tsx`
 114. `frontend-modern/src/components/shared/useUpgradeNavigation.ts`
@@ -2748,6 +2749,15 @@ surface instead of falling through the app-level `Loading view...` fallback.
 Feature slices such as recovery and infrastructure drawers may consume that
 helper, but they must not fork new suspense-escape helpers once the shared
 contract exists.
+That retained-value boundary is explicitly bounded for long-lived browser
+sessions. Fulfilled resource/range queries use a 64-entry LRU with a five-minute
+inactive lifetime, clear on organization changes, and reject late old-scope
+completions from the shared cache. Large storage summary history follows the
+same ownership rule through `frontend-modern/src/utils/storageSummaryCache.ts`:
+it keeps at most 20 recent node/range summaries and aborts in-flight requests
+when organization ownership changes. Drawer navigation, chart range churn,
+background tabs, reconnects, and server restarts must not turn either cache
+into an append-only browser history.
 The settings reporting shell now also owns a deliberate split between
 historical performance reports and current-state VM inventory export.
 `frontend-modern/src/components/Settings/ReportingPanel.tsx`,

docs/release-control/v6/internal/subsystems/registry.json

@@ -4610,6 +4610,7 @@
         "frontend-modern/src/utils/sourcePlatformOptions.ts",
         "frontend-modern/src/utils/sourcePlatforms.ts",
         "frontend-modern/src/utils/ssoProviderPresentation.ts",
+        "frontend-modern/src/utils/storageSummaryCache.ts",
         "frontend-modern/src/utils/systemLogsPresentation.ts",
         "frontend-modern/src/utils/systemSettingsPresentation.ts",
         "frontend-modern/src/utils/textPresentation.ts",
@@ -5035,15 +5036,18 @@
           },
           {
             "id": "retained-value-query-helper",
-            "label": "retained-value query helper proof",
+            "label": "retained-value and storage history cache proof",
             "match_prefixes": [],
             "match_files": [
-              "frontend-modern/src/hooks/createNonSuspendingQuery.ts"
+              "frontend-modern/src/hooks/createNonSuspendingQuery.ts",
+              "frontend-modern/src/utils/storageSummaryCache.ts"
             ],
             "allow_same_subsystem_tests": false,
             "test_prefixes": [],
             "exact_files": [
-              "frontend-modern/src/components/Infrastructure/__tests__/ResourceDetailDrawer.history.test.tsx"
+              "frontend-modern/src/components/Infrastructure/__tests__/ResourceDetailDrawer.history.test.tsx",
+              "frontend-modern/src/hooks/__tests__/createNonSuspendingQuery.test.tsx",
+              "frontend-modern/src/utils/__tests__/storageSummaryCache.test.ts"
             ]
           },
           {

docs/release-control/v6/internal/subsystems/storage-recovery.md

@@ -1803,7 +1803,11 @@ must not treat starter
     bounded in-memory cache for same-tab remounts, but its cache key must carry
     an explicit summary contract version so long-lived demo sessions do not
     rehydrate stale pool or disk sparkline shapes after the storage summary
-    chart model changes.
+    chart model changes. The shared storage history owner at
+    `frontend-modern/src/utils/storageSummaryCache.ts` must likewise remain
+    bounded to 20 recent node/range summaries, use LRU replacement, and abort
+    in-flight requests when organization ownership changes so a late response
+    cannot recreate an old-scope cache entry.
 19. Keep cross-surface workload handoffs on canonical IDs too. Shared workload
     chart transport may look up provider-backed VM history through unified
     metrics targets, but infrastructure/workloads/storage/recovery navigation
@@ -1897,6 +1901,16 @@ that Safe auto-fix or Autopilot remediation is verified.
 
 ## Current State
 
+### Storage history remount state is bounded
+
+Storage summary history no longer treats every node/range combination visited
+by an always-open tab as permanent browser state. The shared cache keeps 20
+recent summaries, refreshes LRU order on reuse, and cancels outstanding chart
+requests during an organization switch. This cache is separate from backend
+metrics-history retention and recovery-ingest ownership: increasing backup
+polling or server-side recovery enumeration must not expand the browser cache
+outside the fixed remount budget.
+
 ### vSphere member composition is inventory, not protection evidence
 
 ESXi host members projected under a vCenter connection in the grouped

frontend-modern/src/components/Storage/__tests__/Storage.test.tsx

@@ -531,7 +531,9 @@ describe('Storage', () => {
     const storageContentSurface = screen.getByTestId('storage-content-surface');
     expect(await within(storageContentSurface).findByText(/\+40(?:\.0)? GB/)).toBeInTheDocument();
     expect(within(storageContentSurface).getByText(/-20(?:\.0)? GB/)).toBeInTheDocument();
-    expect(storageSummarySpy).toHaveBeenCalledWith('24h', undefined, { nodeId: undefined });
+    expect(storageSummarySpy).toHaveBeenCalledWith('24h', expect.any(AbortSignal), {
+      nodeId: undefined,
+    });
 
     storageSummarySpy.mockRestore();
   });

frontend-modern/src/hooks/__tests__/createNonSuspendingQuery.test.tsx

@@ -1,18 +1,26 @@
 import { afterEach, describe, expect, it, vi } from 'vitest';
 import { cleanup, render, screen, waitFor } from '@solidjs/testing-library';
+import { createSignal } from 'solid-js';
 import {
   createNonSuspendingQuery,
+  getCreateNonSuspendingQueryCacheDiagnosticsForTest,
   resetCreateNonSuspendingQueryCacheForTest,
 } from '@/hooks/createNonSuspendingQuery';
+import { eventBus } from '@/stores/events';
 
 afterEach(() => {
   resetCreateNonSuspendingQueryCacheForTest();
   cleanup();
+  vi.useRealTimers();
 });
 
-function QueryProbe(props: { cacheNamespace: string; fetcher: (key: string) => Promise<string> }) {
+function QueryProbe(props: {
+  cacheNamespace: string;
+  fetcher: (key: string) => Promise<string>;
+  queryKey?: () => string;
+}) {
   const state = createNonSuspendingQuery<string, string>({
-    source: () => 'stable-key',
+    source: () => props.queryKey?.() ?? 'stable-key',
     cacheKey: (key) => `${props.cacheNamespace}:${key}`,
     fetcher: props.fetcher,
     initialValue: 'initial',
@@ -51,4 +59,96 @@ describe('createNonSuspendingQuery', () => {
     expect(screen.getByTestId('query-probe').textContent).toContain('loading:false');
     expect(screen.getByTestId('query-probe').textContent).not.toContain('initial');
   });
+
+  it('evicts least-recently-used resource and range entries at the cache limit', async () => {
+    const cacheNamespace = `bounded-query-cache-${Date.now()}`;
+    const { maxEntries } = getCreateNonSuspendingQueryCacheDiagnosticsForTest();
+    const [queryKey, setQueryKey] = createSignal('resource-0:1h');
+    const fetcher = vi.fn(async (key: string) => `loaded:${key}`);
+
+    render(() => (
+      <QueryProbe cacheNamespace={cacheNamespace} fetcher={fetcher} queryKey={queryKey} />
+    ));
+
+    for (let index = 0; index <= maxEntries; index += 1) {
+      const key = `resource-${index}:1h`;
+      setQueryKey(key);
+      await waitFor(() => {
+        expect(screen.getByTestId('query-probe').textContent).toContain(`loaded:${key}`);
+      });
+    }
+
+    const diagnostics = getCreateNonSuspendingQueryCacheDiagnosticsForTest();
+    expect(diagnostics.size).toBe(maxEntries);
+    expect(diagnostics.keys).not.toContain(`${cacheNamespace}:resource-0:1h`);
+    expect(diagnostics.keys).toContain(`${cacheNamespace}:resource-${maxEntries}:1h`);
+  });
+
+  it('drops retained values when the organization changes', async () => {
+    const cacheNamespace = `org-query-cache-${Date.now()}`;
+    const firstRender = render(() => (
+      <QueryProbe cacheNamespace={cacheNamespace} fetcher={async () => 'org-a-value'} />
+    ));
+
+    await waitFor(() => {
+      expect(screen.getByTestId('query-probe').textContent).toContain('org-a-value');
+    });
+    firstRender.unmount();
+    expect(getCreateNonSuspendingQueryCacheDiagnosticsForTest().size).toBe(1);
+
+    eventBus.emit('org_switched', 'org-b');
+
+    render(() => (
+      <QueryProbe cacheNamespace={cacheNamespace} fetcher={() => new Promise<string>(() => {})} />
+    ));
+
+    expect(getCreateNonSuspendingQueryCacheDiagnosticsForTest().size).toBe(0);
+    expect(screen.getByTestId('query-probe').textContent).toContain('initial');
+    expect(screen.getByTestId('query-probe').textContent).not.toContain('org-a-value');
+  });
+
+  it('does not repopulate the cache when an old-org request resolves late', async () => {
+    let resolveFetch: ((value: string) => void) | undefined;
+    render(() => (
+      <QueryProbe
+        cacheNamespace={`late-query-cache-${Date.now()}`}
+        fetcher={() =>
+          new Promise<string>((resolve) => {
+            resolveFetch = resolve;
+          })
+        }
+      />
+    ));
+
+    await waitFor(() => {
+      expect(resolveFetch).toBeTypeOf('function');
+    });
+    eventBus.emit('org_switched', 'org-b');
+    resolveFetch?.('late-org-a-value');
+
+    await waitFor(() => {
+      expect(screen.getByTestId('query-probe').textContent).toContain('initial');
+    });
+    expect(screen.getByTestId('query-probe').textContent).not.toContain('late-org-a-value');
+    expect(getCreateNonSuspendingQueryCacheDiagnosticsForTest().size).toBe(0);
+  });
+
+  it('expires inactive retained values after the cache age limit', async () => {
+    vi.useFakeTimers();
+    vi.setSystemTime(new Date('2026-07-23T12:00:00.000Z'));
+    const diagnostics = getCreateNonSuspendingQueryCacheDiagnosticsForTest();
+
+    render(() => (
+      <QueryProbe cacheNamespace="expiring-query-cache" fetcher={async () => 'short-lived-value'} />
+    ));
+
+    await Promise.resolve();
+    await Promise.resolve();
+    await Promise.resolve();
+    expect(getCreateNonSuspendingQueryCacheDiagnosticsForTest().size).toBe(1);
+
+    vi.advanceTimersByTime(diagnostics.maxAgeMs);
+
+    expect(getCreateNonSuspendingQueryCacheDiagnosticsForTest().size).toBe(0);
+  });
 });

frontend-modern/src/hooks/createNonSuspendingQuery.ts

@@ -1,4 +1,5 @@
 import { type Accessor, createEffect, createSignal, onCleanup } from 'solid-js';
+import { eventBus } from '@/stores/events';
 
 interface CreateNonSuspendingQueryOptions<T, K> {
   source: Accessor<K | null>;
@@ -15,14 +16,130 @@ interface QueryRunOptions {
 /**
  * Keep query-backed surfaces out of the app-level Suspense boundary by
  * retaining the last fulfilled value while the next request is in flight.
+ *
+ * This cache is shared across route/drawer remounts, so it needs an explicit
+ * ownership boundary. In particular, history responses can be large and their
+ * keys contain resource IDs and time ranges that continually change during a
+ * long-lived browser session.
  */
-const retainedQueryCache = new Map<
+const RETAINED_QUERY_CACHE_MAX_ENTRIES = 64;
-  string,
+const RETAINED_QUERY_CACHE_MAX_AGE_MS = 5 * 60_000;
-  { error: unknown; resolvedOnce: boolean; value: unknown }
+
->();
+type RetainedQueryCacheEntry = {
+  cachedAt: number;
+  error: unknown;
+  resolvedOnce: boolean;
+  value: unknown;
+};
+
+const retainedQueryCache = new Map<string, RetainedQueryCacheEntry>();
+let retainedQueryCacheGeneration = 0;
+let retainedQueryCacheExpiryTimer: ReturnType<typeof setTimeout> | null = null;
+
+const clearRetainedQueryCacheExpiryTimer = () => {
+  if (retainedQueryCacheExpiryTimer !== null) {
+    clearTimeout(retainedQueryCacheExpiryTimer);
+    retainedQueryCacheExpiryTimer = null;
+  }
+};
+
+const pruneExpiredRetainedQueryEntries = (now = Date.now()) => {
+  for (const [key, entry] of retainedQueryCache) {
+    if (now - entry.cachedAt >= RETAINED_QUERY_CACHE_MAX_AGE_MS) {
+      retainedQueryCache.delete(key);
+    }
+  }
+};
+
+const scheduleRetainedQueryCacheExpiry = () => {
+  clearRetainedQueryCacheExpiryTimer();
+  if (retainedQueryCache.size === 0) {
+    return;
+  }
+
+  let nextExpiryAt = Number.POSITIVE_INFINITY;
+  for (const entry of retainedQueryCache.values()) {
+    nextExpiryAt = Math.min(nextExpiryAt, entry.cachedAt + RETAINED_QUERY_CACHE_MAX_AGE_MS);
+  }
+
+  retainedQueryCacheExpiryTimer = setTimeout(
+    () => {
+      retainedQueryCacheExpiryTimer = null;
+      pruneExpiredRetainedQueryEntries();
+      scheduleRetainedQueryCacheExpiry();
+    },
+    Math.max(0, nextExpiryAt - Date.now()),
+  );
+};
+
+const clearRetainedQueryCache = () => {
+  retainedQueryCacheGeneration += 1;
+  retainedQueryCache.clear();
+  clearRetainedQueryCacheExpiryTimer();
+};
+
+const readRetainedQueryCacheEntry = (key: string): RetainedQueryCacheEntry | null => {
+  const cached = retainedQueryCache.get(key);
+  if (!cached) {
+    return null;
+  }
+  if (Date.now() - cached.cachedAt >= RETAINED_QUERY_CACHE_MAX_AGE_MS) {
+    retainedQueryCache.delete(key);
+    scheduleRetainedQueryCacheExpiry();
+    return null;
+  }
+
+  // Map insertion order is the LRU order. A cache hit keeps a remounted
+  // surface's value ahead of older, inactive resource/range combinations.
+  retainedQueryCache.delete(key);
+  retainedQueryCache.set(key, cached);
+  return cached;
+};
+
+const writeRetainedQueryCacheEntry = (
+  key: string,
+  value: Omit<RetainedQueryCacheEntry, 'cachedAt'>,
+) => {
+  pruneExpiredRetainedQueryEntries();
+  retainedQueryCache.delete(key);
+  retainedQueryCache.set(key, {
+    ...value,
+    cachedAt: Date.now(),
+  });
+
+  while (retainedQueryCache.size > RETAINED_QUERY_CACHE_MAX_ENTRIES) {
+    const oldestKey = retainedQueryCache.keys().next().value;
+    if (oldestKey === undefined) {
+      break;
+    }
+    retainedQueryCache.delete(oldestKey);
+  }
+  scheduleRetainedQueryCacheExpiry();
+};
 
 export function resetCreateNonSuspendingQueryCacheForTest() {
-  retainedQueryCache.clear();
+  clearRetainedQueryCache();
+}
+
+export function getCreateNonSuspendingQueryCacheDiagnosticsForTest() {
+  pruneExpiredRetainedQueryEntries();
+  return {
+    keys: Array.from(retainedQueryCache.keys()),
+    maxAgeMs: RETAINED_QUERY_CACHE_MAX_AGE_MS,
+    maxEntries: RETAINED_QUERY_CACHE_MAX_ENTRIES,
+    size: retainedQueryCache.size,
+  };
+}
+
+const unsubscribeRetainedQueryOrgSwitch = eventBus.on('org_switched', () => {
+  clearRetainedQueryCache();
+});
+
+if (import.meta.hot) {
+  import.meta.hot.dispose(() => {
+    unsubscribeRetainedQueryOrgSwitch();
+    clearRetainedQueryCache();
+  });
 }
 
 export function createNonSuspendingQuery<T, K>(options: CreateNonSuspendingQueryOptions<T, K>) {
@@ -38,7 +155,7 @@ export function createNonSuspendingQuery<T, K>(options: CreateNonSuspendingQuery
     if (!cacheKey) {
       return null;
     }
-    const cached = retainedQueryCache.get(cacheKey);
+    const cached = readRetainedQueryCacheEntry(cacheKey);
     if (!cached) {
       return null;
     }
@@ -69,9 +186,15 @@ export function createNonSuspendingQuery<T, K>(options: CreateNonSuspendingQuery
     return options.initialValue;
   };
 
+  const unsubscribeLiveQueryOrgSwitch = eventBus.on('org_switched', () => {
+    reset();
+  });
+  onCleanup(unsubscribeLiveQueryOrgSwitch);
+
   const run = async (key: K, runOptions: QueryRunOptions = {}): Promise<T> => {
     const requestId = ++latestRequestId;
     const retainedCacheKey = getRetainedCacheKey(key);
+    const cacheGeneration = retainedQueryCacheGeneration;
     if (!runOptions.background) {
       setLoading(true);
     }
@@ -92,8 +215,8 @@ export function createNonSuspendingQuery<T, K>(options: CreateNonSuspendingQuery
     } finally {
       if (requestId === latestRequestId) {
         setResolvedOnce(true);
-        if (retainedCacheKey) {
+        if (retainedCacheKey && cacheGeneration === retainedQueryCacheGeneration) {
-          retainedQueryCache.set(retainedCacheKey, {
+          writeRetainedQueryCacheEntry(retainedCacheKey, {
             error: error(),
             resolvedOnce: true,
             value: value(),

frontend-modern/src/utils/__tests__/storageSummaryCache.test.ts

@@ -66,7 +66,7 @@ describe('storageSummaryCache', () => {
 
       expect(result).toBe(response);
       expect(mockGetStorageSummaryCharts).toHaveBeenCalledTimes(1);
-      expect(mockGetStorageSummaryCharts).toHaveBeenCalledWith('1h', undefined, {
+      expect(mockGetStorageSummaryCharts).toHaveBeenCalledWith('1h', expect.any(AbortSignal), {
         nodeId: 'node-1',
       });
       expect(readStorageSummaryCache('1h', 'node-1')).toBe(response);
@@ -77,7 +77,7 @@ describe('storageSummaryCache', () => {
 
       await fetchStorageSummaryAndCache('24h');
 
-      expect(mockGetStorageSummaryCharts).toHaveBeenCalledWith('24h', undefined, {
+      expect(mockGetStorageSummaryCharts).toHaveBeenCalledWith('24h', expect.any(AbortSignal), {
         nodeId: undefined,
       });
     });
@@ -203,5 +203,43 @@ describe('storageSummaryCache', () => {
       expect(mockGetStorageSummaryCharts).toHaveBeenCalledTimes(2);
       expect(readStorageSummaryCache('1h')).toBe(second);
     });
+
+    it('aborts an in-flight summary request when the organization changes', async () => {
+      let signal: AbortSignal | undefined;
+      mockGetStorageSummaryCharts.mockImplementationOnce(
+        (_range: TimeRange, requestSignal: AbortSignal) => {
+          signal = requestSignal;
+          return new Promise<StorageSummaryChartsResponse>((_resolve, reject) => {
+            requestSignal.addEventListener('abort', () => {
+              reject(new DOMException('Aborted', 'AbortError'));
+            });
+          });
+        },
+      );
+
+      const request = fetchStorageSummaryAndCache('1h');
+      expect(signal?.aborted).toBe(false);
+
+      eventBus.emit('org_switched', 'org-b');
+
+      expect(signal?.aborted).toBe(true);
+      await expect(request).rejects.toMatchObject({ name: 'AbortError' });
+      expect(readStorageSummaryCache('1h')).toBeNull();
+    });
+
+    it('keeps only the 20 most recently used node and range summaries', async () => {
+      mockGetStorageSummaryCharts.mockImplementation(
+        (_range: TimeRange, _signal: AbortSignal, options?: { nodeId?: string }) =>
+          Promise.resolve(makeResponse(Number(options?.nodeId?.split('-').at(-1)) || 1)),
+      );
+
+      for (let index = 0; index <= 20; index += 1) {
+        await fetchStorageSummaryAndCache('1h', { nodeId: `node-${index}` });
+      }
+
+      expect(readStorageSummaryCache('1h', 'node-0')).toBeNull();
+      expect(readStorageSummaryCache('1h', 'node-1')).not.toBeNull();
+      expect(readStorageSummaryCache('1h', 'node-20')).not.toBeNull();
+    });
   });
 });

frontend-modern/src/utils/storageSummaryCache.ts

@@ -4,6 +4,7 @@ import { getOrgID } from '@/utils/apiClient';
 import { normalizeOrgScope } from '@/utils/orgScope';
 
 const STORAGE_SUMMARY_CACHE_VERSION = 1;
+const MAX_IN_MEMORY_STORAGE_SUMMARIES = 20;
 
 function cacheKeyFor(
   range: TimeRange,
@@ -14,13 +15,51 @@ function cacheKeyFor(
 }
 
 const inMemoryCache = new Map<string, StorageSummaryChartsResponse>();
-const inFlightFetches = new Map<string, Promise<StorageSummaryChartsResponse>>();
+const inFlightFetches = new Map<
+  string,
+  {
+    controller: AbortController;
+    promise: Promise<StorageSummaryChartsResponse>;
+  }
+>();
+let storageSummaryCacheGeneration = 0;
+
+const readInMemoryStorageSummary = (key: string): StorageSummaryChartsResponse | null => {
+  const cached = inMemoryCache.get(key);
+  if (!cached) {
+    return null;
+  }
+  inMemoryCache.delete(key);
+  inMemoryCache.set(key, cached);
+  return cached;
+};
+
+const writeInMemoryStorageSummary = (key: string, response: StorageSummaryChartsResponse): void => {
+  inMemoryCache.delete(key);
+  inMemoryCache.set(key, response);
+  while (inMemoryCache.size > MAX_IN_MEMORY_STORAGE_SUMMARIES) {
+    const oldestKey = inMemoryCache.keys().next().value;
+    if (oldestKey === undefined) {
+      break;
+    }
+    inMemoryCache.delete(oldestKey);
+  }
+};
+
+const clearStorageSummaryCache = () => {
+  storageSummaryCacheGeneration += 1;
+  inMemoryCache.clear();
+  for (const entry of inFlightFetches.values()) {
+    entry.controller.abort();
+  }
+  inFlightFetches.clear();
+};
 
 export function readStorageSummaryCache(
   range: TimeRange,
   nodeId?: string,
 ): StorageSummaryChartsResponse | null {
-  return inMemoryCache.get(cacheKeyFor(range, nodeId)) ?? null;
+  return readInMemoryStorageSummary(cacheKeyFor(range, nodeId));
 }
 
 export function fetchStorageSummaryAndCache(
@@ -30,31 +69,38 @@ export function fetchStorageSummaryAndCache(
   const inFlightKey = cacheKeyFor(range, options?.nodeId);
   const existing = inFlightFetches.get(inFlightKey);
   if (existing) {
-    return existing;
+    return existing.promise;
   }
 
-  const request = ChartsAPI.getStorageSummaryCharts(range, undefined, {
+  const controller = new AbortController();
+  const cacheGeneration = storageSummaryCacheGeneration;
+  const request = ChartsAPI.getStorageSummaryCharts(range, controller.signal, {
     nodeId: options?.nodeId,
   })
     .then((response) => {
-      inMemoryCache.set(inFlightKey, response);
+      if (cacheGeneration === storageSummaryCacheGeneration) {
+        writeInMemoryStorageSummary(inFlightKey, response);
+      }
       return response;
     })
     .finally(() => {
-      inFlightFetches.delete(inFlightKey);
+      const inFlight = inFlightFetches.get(inFlightKey);
+      if (inFlight?.controller === controller) {
+        inFlightFetches.delete(inFlightKey);
+      }
     });
 
-  inFlightFetches.set(inFlightKey, request);
+  inFlightFetches.set(inFlightKey, { controller, promise: request });
   return request;
 }
 
 const unsubscribeStorageOrgSwitch = eventBus.on('org_switched', () => {
-  inMemoryCache.clear();
+  clearStorageSummaryCache();
-  inFlightFetches.clear();
 });
 
 if (import.meta.hot) {
   import.meta.hot.dispose(() => {
     unsubscribeStorageOrgSwitch();
+    clearStorageSummaryCache();
   });
 }