Go接口服务添加限速功能

// Create a rate with the given limit (number of requests) for the given// period (a time.Duration of your choice).import "github.com/ulule/limiter/v3"rate := limiter.Rate{    Period: 1 * time.Hour,    Limit:  1000,}// You can also use the simplified format "<limit>-<period>"", with the given// periods://// * "S": second// * "M": minute// * "H": hour// * "D": day//// Examples://// * 5 reqs/second: "5-S"// * 10 reqs/minute: "10-M"// * 1000 reqs/hour: "1000-H"// * 2000 reqs/day: "2000-D"//rate, err := limiter.NewRateFromFormatted("1000-H")if err != nil {    panic(err)}// Then, create a store. Here, we use the bundled Redis store. Any store// compliant to limiter.Store interface will do the job. The defaults are// "limiter" as Redis key prefix and a maximum of 3 retries for the key under// race condition.import "github.com/ulule/limiter/v3/drivers/store/redis"store, err := redis.NewStore(client)if err != nil {    panic(err)}// Alternatively, you can pass options to the store with the "WithOptions"// function. For example, for Redis store:import "github.com/ulule/limiter/v3/drivers/store/redis"store, err := redis.NewStoreWithOptions(pool, limiter.StoreOptions{    Prefix:   "your_own_prefix",})if err != nil {    panic(err)}// Or use a in-memory store with a goroutine which clears expired keys.import "github.com/ulule/limiter/v3/drivers/store/memory"store := memory.NewStore()// Then, create the limiter instance which takes the store and the rate as arguments.// Now, you can give this instance to any supported middleware.instance := limiter.New(store, rate)// Alternatively, you can pass options to the limiter instance with several options.instance := limiter.New(store, rate, limiter.WithClientIPHeader("True-Client-IP"), limiter.WithIPv6Mask(mask))// Finally, give the limiter instance to your middleware initializer.import "github.com/ulule/limiter/v3/drivers/middleware/stdlib"middleware := stdlib.NewMiddleware(instance)