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Rails 8.2 introduces fallback reads for `RAILS_MASTER_KEY`, allowing Rails to try multiple keys when decrypting encrypted files. A useful addition for handling key transitions in Rails applications.

Read more: blog.saeloun.com/2026/11/02/r...

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Rails 8.2 adds fallback reads for RAILS_MASTER_KEY
Rails 8.2 can read encrypted files with comma-separated fallback keys. See a synthetic example, failed multi-key writes, and input and instance-caching limits.
blog.saeloun.com
November 2, 2026 at 7:45 AM