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DevOps Intermediate

What is Error Budget?

The acceptable amount of unreliability allowed for a service, calculated as 100% minus the Service Level Objective.

An error budget quantifies how much downtime or errors a service can tolerate. For example, a 99.9% availability SLO gives an error budget of 0.1%, translating to about 8.76 hours per year or 43.8 minutes per month. Teams can spend this budget on risky deployments, experiments, and new features. When the budget is depleted, the team shifts focus to reliability improvements. This framework turns the tension between development speed and stability into a data-driven conversation, removing subjective arguments about when to slow down or speed up releases.

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GitFlow
A branching model for Git that defines a strict workflow with feature, develop, release, hotfix, and main branches.
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A storage and distribution service for container images, similar to a package repository but for Docker images.
Pipeline as Code
Defining CI/CD pipeline configurations as version-controlled code files rather than through UI-based pipeline builders.
Grafana
An open-source analytics and visualization platform for creating dashboards from various data sources.
Ansible
An agentless automation tool for configuration management, application deployment, and task automation using YAML playbooks.
Monitoring
The practice of collecting, analyzing, and alerting on system metrics and logs to ensure application health and performance.
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