You can keep both the value log and LSM tree in memory, exposed by badger.Options. That'd still give you persistence and crash-resilience while allowing your re

You can keep both the value log and LSM tree in memory, exposed by badger.Options. That'd still give you persistence and crash-resilience while allowing your reads to benefit from direct memory access. If persistence is a non-goal, yeah, tmpfs would work. If you use it as an in-memory DB, then I'd recommend using the LSM options, instead of Default options.