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I am a huge fan of append-only logs as a fundamental architectural principle. The Log [1] should be required reading for any CS undergraduate. [1]: https://eng

• kasey_junk 2y ago
  I love them so much that I’ve noodled with building a programming language optimized for using them. Things like types that encode what events are legal in a log, first class support for data versions, fast file read and writes, etc
  • daxfohl 2y ago
    How do you do GDPR takedowns?
    • jaseemabid 2y ago
      Immutable append only persistent log doesn't imply store everything _forever_. If you want to remove something you could add a tombstone record (like Cassandra) and eventually remove the original entry during routine maintenance operations like repacking into a more efficient format, archival into cold storage, TTL handling etc.
    • UltraSane 2y ago
      Best method is to encrypt data with a per user key so you if you delete the encryption key that customer's data cannot be read. You can create a new customer key at a fixed time interval to make deletion more granular.