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The telecommunications industry is seeing a rapid and dramatic change brought about by the confluence of new technologies like 5G and IoT. Invented to make the most current data available wherever and whenever you need it, cross data center replication (XDCR) has been around for decades, but doing it with legacy technology quickly gets expensive, and now with 5G making things even more difficult, properly doing active-active XDCR on a legacy RDBMS has become incredibly complex and error-prone. Enterprises are fast realizing they either need to replace their database completely or risk operating at a permanent technological and economic disadvantage.
In this paper, we’ll discuss what XDCR is and why it’s needed; what active-active XDCR is and why it is such a challenge to implement for so many companies; and finally, how VoltDB does active-active XDCR in a way that avoids conflicts and also allows for total fault tolerance and sub 10-millisecond intelligent decisions on complex streaming data without losing any data accuracy.