How to do persistent caching in golang?

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package main

import (
    "fmt"
    "log"
    "time"
    "golang.org/x/exp/inmem"
)

func main() {
    // Create an in-memory cache with a TTL of 1 minute
    cache := inmem.NewWithTTL(time.Minute)

    // Save data to the cache
    cache.Set("key", "value")

    // Retrieve data from the cache
    value, found := cache.Get("key")
    if found {
        fmt.Println("Value:", value)
    } else {
        fmt.Println("Value not found in cache")
    }

    // Wait for 2 minutes
    time.Sleep(2 * time.Minute)

    // Check if the data has expired
    _, found = cache.Get("key")
    if found {
        fmt.Println("Value still in cache")
    } else {
        fmt.Println("Value expired")
    }
}