Storage evaluation packages (SB-06 / 0.9)¶
| Engine | Decision | Evidence summary |
|---|---|---|
| sled | defer | Pure Rust; API churn and maintenance risk vs redb. Revisit post-0.10 if demand appears. |
| LevelDB | reject | Overlaps RocksDB; weaker packaging story for Oxiland MSRV/platform matrix. |
| MDBX | defer | Attractive LMDB successor, but heed/LMDB already covers the mmap transactional niche in 0.9. |
| SurrealKV | defer | Early ecosystem; promote only after crash/reopen suite and license/MSRV review. |
Promotion rule (ADR-022): no advertisement without shared
tests/backend_conformance.rs crash/reopen/transaction evidence and a
feature/platform CI matrix.