DevVercel3 months ago
Optimizing Vercel Sandbox snapshots
4 min read
Vercel Sandbox filesystem snapshots now restore in under one second, down from over 40 seconds. The team parallelized S3 downloads using Range headers and the AWS Go SDK transfermanager, achieving 2-5x faster downloads. Decompression was also parallelized. Snapshots are compressed.vhs files stored in S3.
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