| 1 | What is Redis Sentinel, and what role does it play in providing high availability for a non clustered Redis setup? Redis › Redis Sentinel & High Availability | Redis | Redis Sentinel & High Availability | Beginner |
| 2 | What is the difference between using Redis Sentinel and using Redis Cluster for achieving high availability, and how would you decide between them? Redis › Redis Sentinel & High Availability | Redis | Redis Sentinel & High Availability | Advanced |
| 3 | How would you deploy Redis Sentinel across multiple data centers or availability zones to maximize resilience against a localized failure? Redis › Redis Sentinel & High Availability | Redis | Redis Sentinel & High Availability | Advanced |
| 4 | Why does Redis Sentinel recommend running at least three Sentinel instances rather than just one? Redis › Redis Sentinel & High Availability | Redis | Redis Sentinel & High Availability | Beginner |
| 5 | How does an application discover the current primary Redis instance when using Sentinel, especially after a failover has occurred? Redis › Redis Sentinel & High Availability | Redis | Redis Sentinel & High Availability | Intermediate |
| 6 | How do you check the current status of a Sentinel deployment to confirm it is properly monitoring your Redis primary and replicas? Redis › Redis Sentinel & High Availability | Redis | Redis Sentinel & High Availability | Intermediate |
| 7 | What is the quorum setting in a Sentinel configuration, and how does it affect the decision to trigger a failover? Redis › Redis Sentinel & High Availability | Redis | Redis Sentinel & High Availability | Intermediate |
| 8 | How would you deploy a highly available Redis Sentinel setup on Kubernetes to provide automatic failover for a primary and replica configuration? Redis › Redis with Docker & Kubernetes | Redis | Redis with Docker & Kubernetes | Advanced |
| 9 | What is Redis replication, and how does it help improve availability and read scalability? Redis › Redis Replication | Redis | Redis Replication | Beginner |
| 10 | How do you configure a Redis instance to become a replica of another Redis instance? Redis › Redis Replication | Redis | Redis Replication | Beginner |
| 11 | How would you set up a disaster recovery plan for Redis that accounts for an entire data center or region becoming unavailable? Redis › Redis Backup & Disaster Recovery | Redis | Redis Backup & Disaster Recovery | Intermediate |
| 12 | How do managed cloud Redis services typically handle backup and disaster recovery differently than a self hosted Redis instance? Redis › Redis Backup & Disaster Recovery | Redis | Redis Backup & Disaster Recovery | Intermediate |
| 13 | How does mutual TLS authentication differ from standard one way TLS, and why would you enable it for Redis? Redis › TLS & Encryption in Redis | Redis | TLS & Encryption in Redis | Intermediate |
| 14 | What is the Redlock algorithm, and why was it proposed for implementing distributed locks across multiple independent Redis instances? Redis › Distributed Locks with Redis | Redis | Distributed Locks with Redis | Advanced |
| 15 | How would you implement a distributed rate limiter using Redis that works correctly across multiple application servers handling requests for the same user? Redis › Rate Limiting with Redis | Redis | Rate Limiting with Redis | Advanced |
| 16 | How would you design and test a complete disaster recovery drill for a Redis based application to verify your team can actually recover successfully under pressure? Redis › Redis Backup & Disaster Recovery | Redis | Redis Backup & Disaster Recovery | Advanced |
| 17 | How would you set up proactive alerting for a production Redis instance to catch problems before they significantly impact your application? Redis › Redis Monitoring & Observability | Redis | Redis Monitoring & Observability | Advanced |
| 18 | What happens to a Redis Cluster's replicas during a failover event, and how does the cluster decide which replica gets promoted? Redis › Redis Replication | Redis | Redis Replication | Advanced |
| 19 | What are the tradeoffs between self managing Redis on Kubernetes versus using a Kubernetes Operator specifically built for Redis? Redis › Redis with Docker & Kubernetes | Redis | Redis with Docker & Kubernetes | Advanced |
| 20 | What is the difference between full resynchronization and partial resynchronization when a replica reconnects to its primary after a temporary disconnection? Redis › Redis Replication | Redis | Redis Replication | Intermediate |
| 21 | What is Redis Cluster, and what problem does it solve compared to running a single Redis instance? Redis › Clustering | Redis | Clustering | Beginner |
| 22 | What is the difference between a master node and a replica node within a Redis Cluster? Redis › Clustering | Redis | Clustering | Beginner |
| 23 | How does Redis Cluster automatically handle failover when a master node becomes unavailable? Redis › Clustering | Redis | Clustering | Intermediate |
| 24 | How does a client library handle automatic reconnection if the connection to Redis is unexpectedly lost? Redis › Connection Pooling & Client Libraries | Redis | Connection Pooling & Client Libraries | Intermediate |
| 25 | What is a split brain scenario in the context of Redis Cluster, and how does the cluster protect against it? Redis › Clustering | Redis | Clustering | Advanced |