Etag Stream
Streaming ETag Computation
A Transform stream that calculates ETag/S3 MD5 sum using the same algorithm as S3. Perfect for verifying large files uploaded using multipart S3 API while keeping memory usage low.
Transform Stream
Node.js Transform stream for ETag calculation
Low Memory
Stream processing keeps memory usage minimal
S3 Compatible
Uses exact same algorithm as Amazon S3
Etag Stream Features
Efficient streaming ETag computation for large file processing
Transform Stream Interface
Built as a Node.js Transform stream that can be easily integrated into existing streaming pipelines.
Memory Efficient Processing
Stream-based processing keeps memory usage low even when processing very large files.
S3-Compatible Algorithm
Uses the exact same MD5-based algorithm that Amazon S3 uses to calculate ETags.
Multipart Upload Verification
Especially useful for verifying large files uploaded using the multipart S3 API.
Pass-Through Data
Data passes through the stream unchanged, allowing for additional processing downstream.
Event-Driven Architecture
Emits events for ETag completion, errors, and data flow for flexible integration.
Basic ETag Stream Usage
Use ETag stream to calculate checksums while streaming file data, perfect for upload verification and data integrity checks.
File Upload Verification
Integrate ETag stream into file upload pipelines to verify data integrity and match S3 ETags for uploaded files.
Pipeline Integration
Combine ETag stream with other transform streams for complex file processing pipelines with integrity checking.