tucana · research · also Tucana key-value store

Tucana

Tucana is a research key-value store combining a buffered tree index, a separate key-value log and copy-on-write persistence.

Readers use the last committed version; an inserted value becomes visible after commit. The prototype permits one writer per key range. [1]

Prefixes narrow leaf searches; a hash match still requires reading the full key to exclude collisions. [1]

Relations

related
Key-value separation, Value log, Kreon

Citations

  1. Papagiannis, Saloustros, Gonzalez-Ferez and Bilas. Tucana. USENIX ATC 2016, pp. 537-550, sections 3-4. (accessed 2026-11-10)

Further reading

  1. Hesela: Tucana, Kreon and the cost of mapped writes (accessed 2026-11-10)
Sources & caveats
  • ATC 2016 research prototype. Source review, not an implementation test or benchmark reproduction.

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Hesela team. Tucana. Hesela. 2026-11-10. https://hesela.dev/terms/tucana/