103 lines
3.3 KiB
Markdown
103 lines
3.3 KiB
Markdown
# Dataset Cache Invalidation Fix
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## Issue
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Datasets were not automatically refreshing in the UI after create/delete operations:
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- **Creating a dataset**: Dataset created in OS but not shown in UI until manual refresh
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- **Deleting a dataset**: Dataset deleted from OS but still showing in UI until manual refresh
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## Root Cause
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The React Query cache invalidation logic was overly complex with:
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1. Multiple invalidation strategies (removeQueries, invalidateQueries, refetchQueries)
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2. Manual refresh triggers with complex state management
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3. Race conditions between cache removal and refetch
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4. Delays and multiple refetch attempts
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This created inconsistent behavior where the cache wasn't properly updated.
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## Solution
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Simplified the cache invalidation to use React Query's built-in mechanism:
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### Before (Complex)
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\\\ ypescript
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onSuccess: async (_, variables) => {
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// Multiple cache operations
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queryClient.removeQueries(...)
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await queryClient.invalidateQueries(...)
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await new Promise(resolve => setTimeout(resolve, 500))
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await queryClient.refetchQueries(...)
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setDatasetRefreshTrigger(...) // Manual trigger
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// More refetch attempts...
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}
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\\\
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### After (Simple)
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\\\ ypescript
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onSuccess: async (_, variables) => {
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setExpandedPools(prev => new Set(prev).add(variables.poolId))
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await queryClient.invalidateQueries({
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queryKey: ['storage', 'zfs', 'pools', variables.poolId, 'datasets']
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})
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await queryClient.refetchQueries({
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queryKey: ['storage', 'zfs', 'pools', variables.poolId, 'datasets']
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})
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}
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\\\
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## Changes Made
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### 1. Simplified createDataset Mutation
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**File**: rontend/src/pages/Storage.tsx (line 256-267)
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- Removed complex cache removal logic
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- Removed refresh trigger state updates
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- Removed delays
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- Simplified to: invalidate → refetch
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### 2. Simplified deleteDataset Mutation
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**File**: rontend/src/pages/Storage.tsx (line 274-285)
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- Same simplification as createDataset
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- Removed 62 lines of complex cache logic
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- Reduced from ~60 lines to 8 lines
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### 3. Removed Unused State
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- Removed datasetRefreshTrigger state variable (line 175)
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- Removed
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efreshTrigger prop from DatasetRows component (line 633)
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## Technical Details
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### Why This Works Better
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1. **invalidateQueries**: Marks the query as stale
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2. **refetchQueries**: Immediately fetches fresh data from API
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3. **No race conditions**: Operations happen in order
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4. **No manual triggers**: React Query handles cache automatically
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5. **Consistent behavior**: Same logic for create and delete
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### React Query Best Practices
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- Use invalidateQueries to mark data as stale
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- Use
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efetchQueries to immediately get fresh data
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- Let React Query manage the cache lifecycle
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- Avoid manual
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emoveQueries unless necessary
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- Don't use setTimeout for synchronization
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## Testing
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After the fix:
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1. ✅ Create dataset → Immediately appears in UI
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2. ✅ Delete dataset → Immediately removed from UI
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3. ✅ No manual refresh needed
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4. ✅ Build successful (9.99s)
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5. ✅ No TypeScript errors
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## Files Modified
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- rontend/src/pages/Storage.tsx
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- Lines reduced: ~120 lines → ~60 lines in mutation logic
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- Complexity reduced: High → Low
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- Maintainability: Improved
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## Backup
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Original file backed up to: rontend/src/pages/Storage.tsx.backup
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---
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**Date**: 2025-12-25
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**Status**: ✅ Fixed and Tested
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**Build**: ✅ Successful
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**Impact**: Dataset UI now updates immediately on create/delete
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