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Fast Verification of Strong Database Isolation (Extended Version)
Zhiheng Cai, Si Liu, Hengfeng Wei +2
Strong isolation guarantees, such as serializability and snapshot isolation, are essential for maintaining data consistency and integrity in modern databases. Verifying whether a d…
TXSQL: Lock Optimizations Towards High Contented Workloads (Extended Version)
Donghui Wang, Yuxing Chen, Chengyao Jiang +10
Two-phase locking (2PL) is a fundamental and widely used concurrency control protocol. It regulates concurrent access to database data by following a specific sequence of acquiring…
Boosting End-to-End Database Isolation Checking via Mini-Transactions (Extended Version)
Hengfeng Wei, Jiang Xiao, Na Yang +4
Transactional isolation guarantees are crucial for database correctness. However, recent studies have uncovered numerous isolation bugs in production databases. The common black-bo…
Online Timestamp-based Transactional Isolation Checking of Database Systems (Extended Version)
Hexu Li, Hengfeng Wei, Hongrong Ouyang +4
Serializability (SER) and snapshot isolation (SI) are widely used transactional isolation levels in database systems. The isolation checking problem asks whether a given execution…
TxnSails: Achieving Serializable Transaction Scheduling with Self-Adaptive Isolation Level Selection
Qiyu Zhuang, Wei Lu, Shuang Liu +6
Achieving the serializable isolation level, regarded as the gold standard for transaction processing, is costly. Recent studies reveal that adjusting specific query patterns within…