Question 1

How to set up Attache with AWS S3 and Heroku?

Accepted Answer

Deploy Attache to Heroku using the provided button, then configure VHOST environment variable with S3 credentials as per vhost.example.yml. Ensure CACHE_SIZE_BYTES and SECRET_KEY are set for cache and authorization.

Question 2

Attache vs ActiveStorage for Rails: which is better?

Accepted Answer

Attache is better for offloading upload processing and dynamic resizing without app bloat, while ActiveStorage integrates tightly with Rails but lacks built-in resumable uploads. Choose Attache for scalability, ActiveStorage for simplicity within Rails.

Question 3

Does Attache support video file processing or thumbnails?

Accepted Answer

No, Attache focuses on image resizing using ImageMagick and basic file handling; it doesn't include video transcoding or thumbnail generation. You'd need additional services for advanced media processing.

Question 4

How to handle file access permissions in Attache?

Accepted Answer

Use SECRET_KEY for HMAC authorization on uploads and deletes, but for user-specific permissions, you must implement logic in your main app since Attache only provides basic host-level security.

Question 5

Can Attache be used with a Node.js or Python backend?

Accepted Answer

Yes, but integration requires custom client code since official libraries are Ruby-centric. You can use the HTTP APIs directly, but it's more work compared to using attache-rails for Ruby apps.

Question 6

What's the performance impact of Attache's local disk cache?

Accepted Answer

The LRU cache with CACHE_SIZE_BYTES eviction helps manage disk space and speeds up repeated requests, but high-traffic sites may need monitoring to avoid cache thrashing and ensure cloud storage fallbacks work smoothly.

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