Which SLIs/SLOs are relevant for Linkerd?

Relevant SLIs/SLOs for Linkerd

Service Level Indicators (SLIs) and Service Level Objectives (SLOs) are crucial for measuring and ensuring the performance and reliability of service mesh like Linkerd. Here are some of the relevant SLIs/SLOs you should consider:

  • Request Latency: Measure the time taken to process a request.
  • Request Success Rate: Percentage of successful requests over total requests received.
  • Traffic Failures: Count of failed requests due to server errors, timeouts, etc.
  • Service Availability: Percentage of time the service is accessible and functioning correctly.

Example of SLIs/SLOs Implementation

// Define SLIs/SLOs in a PHP-based microservices application class SLI { public static function requestLatency($startTime, $endTime) { return $endTime - $startTime; // Calculate latency } public static function requestSuccessRate($successCount, $totalCount) { return ($successCount / $totalCount) * 100; // Calculate success rate } } // Example usage $latency = SLI::requestLatency(microtime(true), microtime(true) + 0.2); echo "Request Latency: " . $latency . " seconds";

Linkerd SLIs SLOs Service Level Indicators Service Level Objectives request latency request success rate service availability

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