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choisit une \textbf{partition key} : garantie que toutes les entrées avec la même partition key seront stockées sur le même noeud +\item SELECT sur une valeur unique de partition key : optimisé (un seul noeud à contacter) +\item SELECT sur plusieurs valeurs de partition key : possible mais lent +\end{itemize} +\begin{center} + \includegraphics[width=.4\linewidth]{assets/cassandra-data-model.jpg} +\end{center} +\end{frame} + \begin{frame}{Une étude de cas encore expérimentale} \vfill