Which SLIs/SLOs are relevant for Retry patterns?

Retry patterns are essential in ensuring the reliability and performance of services. They help in reducing errors and improving user satisfaction by providing a smooth user experience even during transient failures. In this context, Service Level Indicators (SLIs) and Service Level Objectives (SLOs) play a crucial role in measuring the effectiveness of retry mechanisms.

Retry Patterns, SLIs, SLOs, Service Reliability, Performance Monitoring

// Example of a retry pattern in PHP function retry($fn, $maxRetries = 3, $delay = 1000) { $attempts = 0; while ($attempts < $maxRetries) { try { return $fn(); } catch (Exception $e) { $attempts++; if ($attempts >= $maxRetries) { throw $e; // Exceeded max retries, rethrow exception } usleep($delay); // Wait before retrying } } } // SLI example: measuring success rate of retries $successRate = $successfulRetries / $totalRetries; // SLO example: target a 95% success rate for retries $sloTarget = 0.95; if ($successRate < $sloTarget) { // Log or alert as SLO is violated }

Retry Patterns SLIs SLOs Service Reliability Performance Monitoring

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