Your Redis cache has 1GB memory limit. What eviction policy would you choose for a web session store where you want to keep recent sessions?

Which caching pattern checks the cache first, then the database on miss, then populates the cache?

Write-through caching always writes to both cache and database simultaneously.

Which Redis data structure is best for implementing a real-time leaderboard?

What is a cache stampede?

Explain negative caching and when to use it.