\documentclass[twocolumn]{article} \title{ARTful conflict checking for FoundationDB} \author{Andrew Noyes} \date{} \usepackage{hyperref} \usepackage{biblatex} \bibliography{bibliography} \begin{document} \maketitle \section{Abstract} FoundationDB \cite{DBLP:conf/sigmod/ZhouXSNMTABSLRD21} provides serializability using a specialized data structure called \textit{lastCommit}. This data structure maps key ranges (sets of keys denoted by either a singleton key or a half-open interval) to a ``commit version'' represented as a 64-bit integer \footnote{See Algorithm 1 referenced in \cite{DBLP:conf/sigmod/ZhouXSNMTABSLRD21}}. FoundationDB implements \textit{lastCommit} as a version-augmented probabilistic SkipList \cite{10.1145/78973.78977}. In this paper, we propose an alternative implementation of \textit{lastCommit} as a version-augmented Adaptive Radix Tree \cite{DBLP:conf/icde/LeisK013}, and evaluate its performance. \printbibliography \end{document}