Main Memory vs. RAM-Disk Databases: A Linux-based Benchmark

A new type of DBMS, the main memory database (MMDB), claims breakthrough performance and availability via memory-only processing. But doesn't database caching, or using a RAM-disk, achieve the same result with a traditional (disk-based) database? This benchmark tests eXtremeDB against a widely used embedded database, in both disk-based and RAM-disk modes. Deployment on RAM-disk boosts the traditional database by as much as 74 percent, but it still lags the MMDB. Read about the architectural reasons for this disparity.

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