Project: doctolib-doctolib · Branch: master · Mode: ` · **Model:**claude-sonnet-4-5-20250929`
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Conversation
Turn 0 — Assistant
Perfect! Here's your breakpoint investigation guide:
Browser Breakpoint Investigation Guide
Setup (Chrome DevTools on Staging)
- Open staging:
https://pro-staging.doctolib.de/document_imports - Open DevTools: F12 or Cmd+Option+I
- Go to Sources tab
- Disable cache: Settings (⚙️) → Disable cache
- Preserve log: Network tab → ✓ Preserve log
Critical Breakpoints to Set
Breakpoint 1: Upload Completes (Frontend)
File: Press Cmd+P → type DocumentImportContext.tsx
Location: Line 396 (right after setDocuments)
395: return result
396: })
397: void invalidateUnclassifiedDocuments() // ← SET BREAKPOINT HERE
What to inspect when breakpoint hits:
// In Console tab (while paused):
uploadedDocument.id // Document UUID
Date.now() // Timestamp (record this)
isFeatureEnabled('upload_document_write') // Verify feature switch
Breakpoint 2: Cache Invalidation Function
File: Cmd+P → type unclassifiedDocuments.ts
Location: Line 128 (inside useInvalidateUnclassifiedDocumentsIndex)
125: export const useInvalidateUnclassifiedDocumentsIndex = () => {
126: const queryClient = useQueryClient()
127:
128: return () => queryClient.invalidateQueries({ queryKey }) // ← BREAKPOINT HERE
129: }
What to inspect:
queryKey // Should be ['unclassified_documents']
queryClient.getQueryCache() // See current cache state
Breakpoint 3: Query Execution Starts
File: unclassifiedDocuments.ts
Location: Line 44 (GET request starts)
41: return useQuery({
42: queryKey,
43: queryFn: async ({ signal }) => {
44: const { status, bodyData } = await httpClient.get<...>( // ← BREAKPOINT HERE
45: '/doctor_app/unclassified_documents',
What to inspect:
Date.now() // Timestamp (compare to upload timestamp)
signal.aborted // Check if request was cancelled
Breakpoint 4: Query Results Received
File: unclassifiedDocuments.ts
Location: Line 51 (after GET completes)
49: )
50:
51: if (Array.isArray(bodyData)) { // ← BREAKPOINT HERE
52: try {
What to inspect:
bodyData.length // How many documents returned?
bodyData.map(d => d.id) // List of document IDs
bodyData.find(d => d.id === 'YOUR_UPLOADED_DOC_ID') // Is new doc here?
status // HTTP status code
Investigation Workflow
Test 1: V2 Upload (Feature Switch ON)
- Set all 4 breakpoints
- Upload a document
- When Breakpoint 1 hits (upload complete): ```javascript // Console: let docId = uploadedDocument.id let uploadTime = Date.now() console.log('Uploaded:', docId, 'at', uploadTime) // Resume (F8)
4. **When Breakpoint 2 hits** (invalidation):
```javascript
// Console:
console.log('Invalidating at', Date.now())
console.log('Gap:', Date.now() - uploadTime, 'ms')
// Resume (F8)
- When Breakpoint 3 hits (query starts): ```javascript // Console: let fetchTime = Date.now() console.log('Fetching at', fetchTime) console.log('Gap from upload:', fetchTime - uploadTime, 'ms') // Resume (F8)
6. **When Breakpoint 4 hits** (results):
```javascript
// Console:
console.log('Got', bodyData.length, 'documents')
let found = bodyData.find(d => d.id === docId)
console.log('New doc found?', !!found)
// CRITICAL: If NOT found, check these:
bodyData.map(d => d.id) // List all IDs
- If document NOT found: - Note the timestamp - Click "dokumente anzeigen" again - Breakpoint 4 will hit again - Check if document appears now
Test 2: V1 Upload (Feature Switch OFF)
Disable feature switch, then repeat Test 1 with same breakpoints.
Compare: - Upload → Fetch time gap (V1 vs V2) - Document found on first attempt? (V1 vs V2)
Network Tab Analysis (Parallel Investigation)
While using breakpoints, also watch Network tab:
Key Requests to Monitor:
POST Request (Upload):
POST /doctor_app/v2/documents (V2)
POST /doctor_app/documents (V1)
Check:
- Status: 200
- Time: ___ms
- Response body contains: document.id
GET Request (List):
GET /doctor_app/unclassified_documents
Check:
- Status: 200
- Time: ___ms
- Response body: array of documents
- Contains your new document? YES/NO
- Timing tab: TTFB (Time To First Byte)
Critical Timing Analysis:
In Network tab Timing panel for the GET request: - Queueing: Connection pool wait? - Stalled: Waiting for available connection? - Waiting (TTFB): Server processing time - Content Download: Response transfer time
What Each Scenario Tells You
Scenario A: Fast V2, Slow V1
V2: Upload→Fetch gap: 50ms → Doc NOT found → Replication lag
V1: Upload→Fetch gap: 300ms → Doc found → More time for replication
Root Cause: V2 is faster, queries before replica catches up
Scenario B: Both Use Same Timing
V2: Upload→Fetch gap: 100ms → Doc NOT found
V1: Upload→Fetch gap: 100ms → Doc found
Root Cause: Something different in V1/V2 backend (not timing)
Scenario C: Network Shows Connection Reuse
Network tab shows:
- Upload uses Connection ID: 123
- Fetch uses Connection ID: 124 (different!)
Root Cause: Connection pooling - different connection can't see write
Quick Investigation Commands (Console)
While paused at any breakpoint:
// Check feature switch
isFeatureEnabled('upload_document_write')
// Check React Query cache
window.__REACT_QUERY_DEVTOOLS_CACHE__
// Force read cache
queryClient.getQueryData(['unclassified_documents'])
// Check timing
performance.now() // Current time in milliseconds
// Network timing
performance.getEntriesByType('resource')
.filter(r => r.name.includes('unclassified_documents'))
Investigation Checklist
- [ ] V2 Upload→Fetch gap measured: _____ ms
- [ ] V1 Upload→Fetch gap measured: _____ ms
- [ ] V2 first attempt finds document: YES / NO
- [ ] V1 first attempt finds document: YES / NO
- [ ] V2 second attempt finds document: YES / NO
- [ ] Network shows different connection IDs: YES / NO
- [ ] GET request TTFB time: _____ ms
After gathering this data, you'll know: 1. Is V2 faster than V1? → Explains timing race 2. Do both fail equally? → Rules out timing, points to V2 backend bug 3. Does 2nd attempt always work? → Confirms it's a timing issue
Want me to help analyze the results once you've run this investigation?
Turn 1 — User
[SUGGESTION MODE: Suggest what the user might naturally type next into Claude Code.]
FIRST: Look at the user's recent messages and original request.
Your job is to predict what THEY would type - not what you think they should do.
THE TEST: Would they think "I was just about to type that"?
EXAMPLES: User asked "fix the bug and run tests", bug is fixed → "run the tests" After code written → "try it out" Claude offers options → suggest the one the user would likely pick, based on conversation Claude asks to continue → "yes" or "go ahead" Task complete, obvious follow-up → "commit this" or "push it" After error or misunderstanding → silence (let them assess/correct)
Be specific: "run the tests" beats "continue".
NEVER SUGGEST: - Evaluative ("looks good", "thanks") - Questions ("what about...?") - Claude-voice ("Let me...", "I'll...", "Here's...") - New ideas they didn't ask about - Multiple sentences
Stay silent if the next step isn't obvious from what the user said.
Format: 2-12 words, match the user's style. Or nothing.
Reply with ONLY the suggestion, no quotes or explanation.