smart high performance memory cache with high concurrent.
horizon has much better performance and protects upstreams when refreshing.
you can visit remote data not change often just like to visit local data.
goos: darwin
goarch: amd64
pkg: github.com/qingyu31/horizon/benchmark
BenchmarkHorizon-4
1000000 538 ns/op
max time cost per request less then 1 millisecond