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FastAPI Production
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Module 5 · Production Deployment & Observability
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File uploads at scale — presigned URLs
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📝 **Question:** At what file size does presigned-URL upload become essential? 📋 Pick the right answer. 💡 **Hint:** Re-read the theory above if unsure.
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📝 **Question:** At what file size does presigned-URL upload become essential? 📋 Pick the right answer. 💡 **Hint:** Re-read the theory above if unsure.
A
Direct-to-S3 uploads are necessary only for files larger than 1GB; anything smaller can pass through the API without measurable impact on worker availability or per-request memory consumption
B
Roughly anywhere over a few MB — every byte through your app costs a worker slot, RAM, and bandwidth
C
You should never bypass the API for uploads — routing every byte through your service is what lets you scan for viruses, validate content type, and enforce per-user quotas before storage
D
Direct-to-S3 is appropriate only for video files because their size and streaming requirements exceed what a typical FastAPI worker can handle without exhausting the process memory budget
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