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