Understanding SLOs, SLIs, and SLAs: A Practical Guide
Introduction Service Level Indicators (SLIs), Service Level Objectives (SLOs), and Service Level Agreements (SLAs) are fundamental concepts in Site Reliability Engineering. Understanding and implementing them correctly is crucial for maintaining reliable services.
Core Concepts SLI (Service Level Indicator) Definition: A quantitative measure of service reliability from the user’s perspective.
Common SLIs:
Availability: Percentage of successful requests Latency: Proportion of requests served faster than threshold Throughput: Requests processed per second Error Rate: Percentage of failed requests Example SLI Definitions:
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