If you had a specific software or protocol in mind (e.g., “multikey in Redis” or “multikey in AWS KMS”), let me know and I’ll narrow the review.
Definition: A multikey index is an index on an array field in a document database (e.g., MongoDB). Each value in the array gets a separate index entry pointing to the same document. multikey
❌ Standard library often missing (C++, Java, Python need custom or third-party) ❌ Memory overhead for multiple key mappings if done naively If you had a specific software or protocol in mind (e
❌ Key management becomes complex – which slot holds which key? ❌ Some software assumes one key per token ❌ Limited storage (e.g., YubiKey 5 holds ≤ 25 resident FIDO2 keys) ❌ Standard library often missing (C++, Java, Python
Tagging systems, permissions lists, event participants, any “many-to-many” flattened into a document.