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HTAP Workloads: Challenges and Solutions
In this talk, we consider challenges posed to modern DMBS by so-called HTAP workloads. HTAP (Hybrid Transactional & Analytical Processing) combines:
- Fast OLTP-style requests that should be executed with maximal throughput and reasonably low latency.
- OLAP-style analytical queries that require reading a lot of rows to be executed.
As a solution to this question, we consider several approaches: persistent-parallel trees, fork+COW approach (from HyPer), MVCC, and HTAP-aware LSM tree (from LASER).