Retry addon for Fiber designed to apply retry mechanism for unsuccessful network operations. This addon uses an exponential backoff algorithm with jitter. It calls the function multiple times and tries to make it successful. If all calls are failed, then, it returns an error. It adds a jitter at each retry step because adding a jitter is a way to break synchronization across the client and avoid collision.
- Retry Addon
- Table of Contents
- Signatures
- Examples
- Default Config
- Custom Config
- Config
- Default Config Example
func NewExponentialBackoff(config ...Config) *ExponentialBackoff
Firstly, import the addon from Fiber,
import (
"github.com/gofiber/fiber/v3/addon/retry"
)
retry.NewExponentialBackoff()
retry.NewExponentialBackoff(retry.Config{
InitialInterval: 2 * time.Second,
MaxBackoffTime: 64 * time.Second,
Multiplier: 2.0,
MaxRetryCount: 15,
})
// Config defines the config for addon.
type Config struct {
// InitialInterval defines the initial time interval for backoff algorithm.
//
// Optional. Default: 1 * time.Second
InitialInterval time.Duration
// MaxBackoffTime defines maximum time duration for backoff algorithm. When
// the algorithm is reached this time, rest of the retries will be maximum
// 32 seconds.
//
// Optional. Default: 32 * time.Second
MaxBackoffTime time.Duration
// Multiplier defines multiplier number of the backoff algorithm.
//
// Optional. Default: 2.0
Multiplier float64
// MaxRetryCount defines maximum retry count for the backoff algorithm.
//
// Optional. Default: 10
MaxRetryCount int
// currentInterval tracks the current waiting time.
//
// Optional. Default: 1 * time.Second
currentInterval time.Duration
}
// DefaultConfig is the default config for retry.
var DefaultConfig = Config{
InitialInterval: 1 * time.Second,
MaxBackoffTime: 32 * time.Second,
Multiplier: 2.0,
MaxRetryCount: 10,
currentInterval: 1 * time.Second,
}