Comparing the memory footprint of pelikan and redis

[skimhugo]

The question is pelikan seems preallocate a large chunk of memory, how can I make a better comparison?

I saw the crate segcache‘s code logic, to use segcache also need preallocate memory.

I'm confused, how do I compare pelikan with other hash-map solution.

[thinkingfish]

In segcache, the number of segments not in use is tracked by metrics: SEGMENT_FREE, which started out as the total number of segments pre-allocated. It's decremented here. If you use segment_size from the builder (defaults are here) and this metric, you can calculate how much memory is preallocated by not in use.

[skimhugo]

Thanks, I will try.