golang returning from cache

Question

My response time is about 3 second, so I want to decrease the response time. The first thing that I think is returning from cache but I couldn't find any framework or explanation about that. How can I achieve it or is there any alternative solution?

Should I use this framework: https://github.com/mediocregopher/radix.v2

I am using postgresql for db and in for loop I call this code:

err := GetDB().Table("table_name").Find(&words).Error

Answer 1

Your question is too broad but based on the discussion above, I believe what you're trying to do is to load some sort of static data from a database that will be used in your program, and it does not need to be refreshed. In that case, it makes sense to load the data when you connect the database once and keep it in a global variable under a package. For instance:

package model

var SomeData []SomeType

package main

func main() {
  // Load data from the db
  model.SomeData = loadedData
  // Start the program...  
}

This assumes model.SomeData will not change during the program. If you need to, for instance, reload it periodically, a better structure for the program is:

package model

var someData []SomeType
var someDataLock sync.RWMutex

func GetData() []SomeType {
   someDataLock.RLock()
   defer someDataLock.RUnlock()
   return someData
}

func SetData(in []SomeType) {
   someDataLock.Lock()
   defer someDataLock.Unlock()
   someData=in
}

Then you use model.SetData to set the data, and model.GetData to get the data in a thread-safe manner.