v1.0.3 performance optimization

Thanks @oraoto !
By reuse the gen.Query , we have a huge performance improvement.

Benchmark

Enviroment

CPU: Intel Xeon Platinum 8260 @ 2.394GHz 4Core
Memeory: 8GB
OS: Debian GNU/Linux 10 (buster) x86_64

Post Details Page

1000QPS to 2500QPS

Flame Graph

After optimization

Before

Contributors

@1379 @oraoto