golang框架的性能优化

import "golang.org/x/exp/slices"

var cache = map[string]string{}

func GetValueFromCache(key string) (string, bool) {
    value, ok := cache[key]
    return value, ok
}

func SetValueToCache(key, value string) {
    slices.Set(cache, key, value)
}

type User struct {
    ID       int    `gorm:"primary_key"`
    Username string `gorm:"unique"`
    Password string
}

func FindUserByUsername(username string) (*User, error) {
    var user User
    return &user, db.Where("username = ?", username).First(&user).Error
}

import "sync"

type WorkerPool struct {
    workers []chan<- func()
    wg      sync.WaitGroup
}

func NewWorkerPool(size int) *WorkerPool {
    wp := &WorkerPool{
        workers: make([]chan<- func(), size),
    }
    for i := 0; i < size; i++ {
        task := make(chan<- func())
        wp.workers[i] = task
        wp.wg.Add(1)
        go wp.runWorker(task)
    }
    return wp
}

func (wp *WorkerPool) Submit(task func()) {
    ch := wp.workers[rand.Intn(len(wp.workers)) % len(wp.workers)]
    ch <- task
}

go build -race main.go
go build -cgo main.go