Is there a mechanism for automatically compressing objects loaded to S3?

Question

I have a customer who has asked for the following functionality:

When a new object is loaded into S3, there is a "compression" option in the API which automatically compresses this file before loading it into S3.

This would save customer money in storage costs.

Answer

This does not exist as a built-in feature of S3. However, you can have Lambda compress objects as they are added to the bucket. Here is an example: lambda-s3-zip.

You can also compress on the command line as you are copying the object into S3.

gzip myfile.txt | aws s3 cp - s3://mybucket/myfile.txt.gz

You can also compress on the command line as you are copying the object into S3.

```
gzip myfile.txt | aws s3 cp - s3://mybucket/myfile.txt.gz
```

Is there a mechanism for automatically compressing objects loaded to S3?

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