Scholarlink

We’ve built the WebSocket connection – devices can send small protobuf messages and receive commands instantly. But what happens when a camera needs to upload a 5MB JPEG? Or does a microphone record a 15-second audio clip that compresses to 2MB? Sending these through WebSocket hits Lambda’s hard limit: 6MB maximum payload size.

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Presigned URLs for Large File Uploads

  • 章节

  • 发表日期：

    2026年

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  • Dmytro Kozhevin

摘要

We’ve built the WebSocket connection – devices can send small protobuf messages and receive commands instantly. But what happens when a camera needs to upload a 5MB JPEG? Or does a microphone record a 15-second audio clip that compresses to 2MB? Sending these through WebSocket hits Lambda’s hard limit: 6MB maximum payload size.