Which SLIs/SLOs are relevant for Monolith vs microservices?

SLIs/SLOs for Monolith vs Microservices

When managing services, monitoring performance through Service Level Indicators (SLIs) and Service Level Objectives (SLOs) becomes crucial. Both monolithic and microservices architectures have distinct considerations for SLIs and SLOs.

Monolith SLIs/SLOs Example

In a monolithic architecture, the focus may be more on overall system performance and uptime. Common SLIs include:

  • Availability: The percentage of time the service is operational.
  • Latency: The response time for requests to be processed.
  • Error Rate: The percentage of requests resulting in an error.

Microservices SLIs/SLOs Example

Microservices architectures require a more granular approach due to the distributed nature of the services. They often involve:

  • Service Dependability: The health and status of each microservice.
  • Performance per Service: Individual response times and error rates for each microservice.
  • Network Performance: The communication latency between microservices.

Example Code Snippet

<?php // Example of calculating error rate for a service $totalRequests = 1000; $errorRequests = 50; $errorRate = ($errorRequests / $totalRequests) * 100; echo "Error Rate: " . $errorRate . "%"; ?>

SLIs SLOs Monolith Microservices Performance Monitoring Service Level Indicators Service Level Objectives

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