Storage engine = component of a DBMS responsible for storing/retrieving data on memory/disk (locally).
You can plug in different storage engines into your DB system depending on your use-case.
Comparing Databases
Understand the use case in detail and the current and anticipated variables.
Stress test tools
You can construct a test cluster and stimulate your workload using stress tools supported by the DB.
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Benchmarks can be useful to define and test details of the service-level agreement
The service-level agreement (or SLA) is a commitment by the service provider about the quality of provided services. Among other things, the SLA can include information about latency, throughput, jitter, and the number and frequency of failures
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Chapters