Cargo Features

radixdb = { version = "0.2.5", default-features = false, features = ["custom-store", "mem-store", "paged-file-store"] }
default = custom-store, mem-store, paged-file-store

These default features are set whenever radixdb is added without default-features = false somewhere in the dependency tree.

custom-store default mem-store paged-file-store
mem-store default = custom-store, parking_lot
paged-file-store default = custom-store, fnv, memmap, parking_lot

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

fnv paged-file-store
parking_lot mem-store paged-file-store
memmap paged-file-store