Go Best Practices

• 不要频繁的使用<-time.After,它会创建大量channel和goroutine, 可以使用time.Ticker类似时间轮的算法解决；
• 不用频繁的创建[]byte 和 bytes.Buffer对象, 缓存并重复使用他们；
• 多使用缓存池sync.Pool

Fasthttp best practices

• Do not allocate objects and []byte buffers - just reuse them as much as possible. Fasthttp API design encourages this.
• sync.Pool is your best friend.
• Profile your program in production. go tool pprof --alloc_objects your-program mem.pprof usually gives better insights for optimization opportunities than go tool pprof your-program cpu.pprof.
• Write tests and benchmarks for hot paths.
• Avoid conversion between []byte and string, since this may result in memory allocation+copy. Fasthttp API provides functions for both []byte and string - use these functions instead of converting manually between []byte and string. There are some exceptions - see this wiki page for more details.
• Verify your tests and production code under race detector on a regular basis.
• Prefer quicktemplate instead of html/template in your webserver.