Results:
❯ go test --bench .
goos: darwin
goarch: arm64
pkg: github.com/juev/bench-redis
Benchmark_readKeysWithPipe-10 38 33315189 ns/op
Benchmark_readKeys-10 1 68555998875 ns/op
Benchmark_readKeysWithGoRoutines-10 7 147565268 ns/op
Benchmark_readKeysWithConc-10 1 3433085166 ns/op
PASS
ok github.com/juev/bench-redis 81.608s