write-skew

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BOTIROFF-D / adya

Transaction isolation, implemented and convicted: an MVCC engine with four isolation levels including Cahill's SSI, and a dependency-graph checker that finds G0, G1a, G1b, G1c, G-single and G2-item in observed histories

typescript mvcc transactions snapshot-isolation jepsen elle database-internals serializability isolation-levels write-skew

Updated Aug 23, 2026
TypeScript

andifathulms / isolation-anomaly

Star

Interleave two transactions by hand, watch the anomaly happen, then switch database engine and isolation level and watch the same schedule behave completely differently. Verified against real PostgreSQL and MySQL.

mysql mvcc postgresql databases transactions serializability isolation-levels write-skew

Updated Aug 7, 2026
TypeScript

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