These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 1.05 s (backtrack: 0/20).

[ebuild  N     ] acct-group/redis-0-r2::gentoo  0 KiB
[ebuild  N     ] dev-libs/jemalloc-5.4.0-r2:0/2::gentoo  USE="stats -debug -lazy-lock -prof -xmalloc" 893 KiB
[ebuild  N     ] acct-user/redis-0-r2::gentoo  0 KiB
[ebuild  N     ] dev-db/redis-8.2.2:0/8.2::gentoo  USE="jemalloc ssl (-selinux) (-systemd) -tcmalloc -test" 3854 KiB

Total: 4 packages (4 new), Size of downloads: 4746 KiB