FastAPI - Database Integration
How can you efficiently retrieve all documents from a large MongoDB collection using Motor without loading all at once in FastAPI?
How can you efficiently retrieve all documents from a large MongoDB collection using Motor without loading all at once in FastAPI?
hard🚀 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Understand cursor iteration
Motor returns an async cursor that supports async iteration to fetch documents in batches.Step 2: Evaluate options for large data
Using async for loop avoids loading all data at once, unlike to_list with huge length or repeated find_one calls.Final Answer:
Use an async for loop to iterate over the cursor -> Option CQuick Check:
Async for loop = efficient large data retrieval [OK]
Quick Trick: Use async for to iterate large Motor cursors [OK]
Common Mistakes:
MISTAKES- Loading all documents at once with to_list
- Using synchronous clients in async code
- Calling find_one repeatedly instead of cursor
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