why keyspace misses?

[Raghava Mutharaju]

Hello all,

If all the key-value pairs can fit in memory, why would there be key space misses?

The machine on which I run Redis has 16GB RAM. It has the following keyspace hits & misses

keyspace_hits:669385318

keyspace_misses:24788696

Memory values are as follows

used_memory:1465709832

used_memory_human:1.37G

used_memory_rss:1534599168

used_memory_peak:7920770664

used_memory_peak_human:7.38G

So the RAM should be sufficient to hold all the key-value pairs. Why are there still many keyspace misses?

Thank you.

Regards,

Raghava.

[Andy McCurdy]

Perhaps you're querying on keys that don't exist?

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[Raghava Mutharaju]

ah, good catch. Yes, that could be the reason :)

Thank you.

Regards,

Raghava.