Transaction

This blog post explores the fascinating interplay between Hybrid Logical Clocks (HLC) and Multi-Version Concurrency Control (MVCC) in enabling distributed transactions in CockroachDB. It covers how HLC addresses causality issues and how MVCC handles concurrency conflicts in a distributed setting.

This document analyzes the distributed transaction protocol used in Percolator, a system for large-scale incremental processing deployed by Google. Percolator extends Bigtable to provide multi-row ACID transactions through a standard two-phase commit protocol.