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Percona for MongoDB inMemory Storage Engine Performance Expectations

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  • Percona for MongoDB inMemory Storage Engine Performance Expectations

    Hi, i have a replica set with 2 inMemory (primary and secondary) and 1 WiredTiger (Hidden) and i was expecting a huge performance impact without indexing all queries with this setup because of the in-memory engine but when i compare my old whole WiredTiger setup with this there is no better performance with in-memory engine, do you think that i'm missing something?

  • #2
    If this is a read-only workload then you might not see significant differences if those reads are already in memory. You might see a greater impact on writes. If that's a wrong assumption, then version and environment information might be needed. Meanwhile, though, this webinar might be of interest as it covers use cases:
    https://www.percona.com/resources/we...-memory-engine

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