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ada
757ae4cd00
- Introduced comprehensive notes on virtualization, covering architecture, hypervisors, and containerization. - Added detailed lecture on basic network services including DNS, DHCP, and NTP, emphasizing their importance in IT infrastructure. - Included notes on backup systems (СРК), discussing RTO, RPO, and backup strategies. - Documented the significance of monitoring systems, differentiating between monitoring and observability, and outlining key metrics to track. - Created new markdown files for personal projects on home server setup and containerization, linking them to the main notes.
57 lines
1012 B
Markdown
57 lines
1012 B
Markdown
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## ✅ SLI — Service Level Indicator
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**Показатель уровня сервиса.**
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Что мы измеряем?
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📌 Примеры:
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- Доля успешных запросов
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- Среднее время отклика
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- Аптайм за 30 дней
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---
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## 🎯 SLO — Service Level Objective
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**Целевой уровень показателя.**
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Какого значения мы хотим достичь?
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📌 Примеры:
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- 99.9% успешных запросов
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- ≤ 200 мс отклик в 95% случаев
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---
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## 🤝 SLA — Service Level Agreement
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**Соглашение об уровне сервиса.**
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Юридическое обязательство перед клиентом.
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📌 Включает:
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- SLO (цели)
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- Санкции за нарушения
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- Обязанности сторон
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---
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## 📊 Связь:
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```
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SLI → что измеряем
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SLO → цель показателя
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SLA → договор с клиентом
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```
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