#Sre

20 questions

• How would you design monitoring for an application from scratch?Site Reliability & Operations#observabilityMiddle›
• What are metrics, logs, and traces, and when do you reach for each?Site Reliability & Operations#observabilityMiddle›
• How do you choose alert thresholds to avoid alert fatigue and false positives?Site Reliability & Operations#alertingMiddle›
• What are the four golden signals of monitoring?Site Reliability & Operations#observabilityMiddle›
• What are the common monitoring tools and how do you choose between them?Site Reliability & Operations#observabilityMiddle›
• How do you detect problems before users complain?Site Reliability & Operations#observabilityMiddle›
• A web page or API is slow — how do you find the cause?Site Reliability & Operations#performanceMiddle›
• How do you optimize a slow database query?Site Reliability & Operations#databaseMiddle›
• How do you tell whether a bottleneck is CPU, memory, I/O, or network?Site Reliability & Operations#performanceMiddle›
• How would you tune a high-traffic WordPress site for performance?Site Reliability & Operations#wordpressSenior›
• What are the cache layers in a typical web stack?Site Reliability & Operations#cachingMiddle›
• How do you decide what to cache and for how long (TTL)?Site Reliability & Operations#cachingMiddle›
• What is a cache stampede and how do you prevent it?Site Reliability & Operations#cachingMiddle›
• How do you design a backup and disaster recovery strategy?Site Reliability & Operations#disaster-recoverySenior›
• What is graceful degradation when a dependency fails?Site Reliability & Operations#resilienceMiddle›
• How do circuit breakers and retries with backoff work in distributed systems?Site Reliability & Operations#resilienceMiddle›
• How do you tell a DDoS attack apart from a natural traffic spike?Site Reliability & Operations#ddosMiddle›
• Where and how do you configure rate limiting?Site Reliability & Operations#rate-limitingMiddle›
• What is the difference between Layer 7 and Layer 3/4 DDoS attacks, and why do mitigations differ?Site Reliability & Operations#ddosSenior›
• How would you build a DDoS incident response runbook?Site Reliability & Operations#ddosSenior›