Enhanced Http Client

Http Client Library that provides "enhanced" http client with resiliency & circuit breaker backed functionality

Retry policy

EnhancedHttpClient will retry requests for

• Network issues
• 5xx HTTP status
• Request Timeout

Circuit breaker policy

Circuit breaker layer resides before retry policy layer and can be in closed|open|half-open states. Used as-is from gobreaker

Usage:

go get github.com/RassulYunussov/ehttpclient

By default ehttpclient.Create produces EnhancedHttpClient with no retry and no circuit breaker. Client can add policies:

• retry
• circuit breaker
• retry + cicruit breaker

Default

No retry policy. No circuit breaker

defaultClient := ehttpclient.Create(200*time.Millisecond)

Retry

The retry policy uses multiplication of attempt & backoffTimeout

// retry count 3
// backoff timeout
retryClient := ehttpclient.Create(200*time.Millisecond, ehttpclient.WithRetry(3, 100*time.Millisecond))

Circuit breaker

// detailed info about configuration can be found here: https://github.com/sony/gobreaker
retryClient := ehttpclient.Create(200*time.Millisecond, ehttpclient.WithCircuitBreaker(1, 2, time.Second, time.Second))

Retry + Circuit breaker

ehttpClient := ehttpclient.Create(200*time.Millisecond, ehttpclient.WithRetry(3, 100*time.Millisecond), ehttpclient.WithCircuitBreaker(1, 2, time.Second, time.Second))

Make a request

request, err := http.NewRequest(http.MethodGet, "http://localhost:8080", nil)
response, err := client.Do(request)