Caching with Go

gistfile1.go

// Without caching, or with a memoization wrapper:

func (c *Context) FooApi() (*Result, error) {
	return c.apiClient.someGoogleApiQuery.Do()
}

func (c *Context) BarApi(someArg string) (*Result, error) {
	return c.apiClient.someGoogleApiQuery.Filter(someArg).Do()
}

// With explicit caching

func (c *Context) FooApiCached() (r *Result, err error) {
	key := "FooApi"
	_, err = memcache.Gob.Get(c, key, r)
	if err == nil {
		return r, nil
	}

	r, err = c.apiClient.someGoogleApiQuery.Do()

	if err != nil {
		return r, err
	}

	memcache.Gob.Set(c, &memcache.Item{
		Key: key,
		Object: r,
	})
	return r, nil
}

func (c *Context) BarApiCached(someArg string) (r *Result, err error) {
	key := "BarApi:" + someArg
	_, err = memcache.Gob.Get(c, key, r)
	if err == nil {
		return r, nil
	}

	r, err = c.apiClient.someGoogleApiQuery.Filter(someArg).Do()

	if err != nil {
		return r, err
	}

	memcache.Gob.Set(c, &memcache.Item{
		Key: key,
		Object: r,
	})
	return r, nil
}