Basics of Memcached
- What is Memcached, and why is it used?
- How does Memcached work?
- Explain the key features of Memcached.
- What type of data structures are supported in Memcached?
- How does Memcached store data in memory?
- What are common use cases of Memcached in web applications?
- Compare Memcached and Redis.
- What are the advantages of using Memcached?
- What are the limitations of Memcached?
- How does Memcached achieve high performance?
Core Concepts
- What is a cache miss in Memcached?
- What is a cache hit, and how is it measured?
- Explain the Least Recently Used (LRU) eviction policy in Memcached.
- What is the maximum size of a key and value in Memcached?
- How does Memcached handle hashing?
- Explain the concept of slabs and chunks in Memcached.
- What is the binary protocol, and how does it differ from the text protocol?
- How are keys stored in Memcached?
- What happens when the memory limit is reached in Memcached?
- How does Memcached handle concurrent requests?
Performance Optimization
- How can you optimize Memcached for read-heavy workloads?
- How do you optimize Memcached for write-heavy workloads?
- What is connection pooling, and how does Memcached utilize it?
- What are the performance impacts of using large keys or values?
- How do you reduce latency in Memcached?
- What tools can be used to monitor Memcached performance?
- Explain the impact of network latency on Memcached.
- How does the slab allocator improve performance in Memcached?
- How do you identify hot keys in Memcached?
- What strategies can prevent cache stampede in Memcached?
Scaling and Clustering
- Can Memcached be used in a distributed environment? How?
- What is consistent hashing, and why is it important in Memcached?
- How do you scale Memcached in a cluster setup?
- Explain node addition and removal in a Memcached cluster.
- How does Memcached handle load balancing?
- What happens if a node fails in a distributed Memcached setup?
- How do you manage replication in Memcached?
- What are the trade-offs of using multiple nodes in Memcached?
- What is sharding, and how is it implemented in Memcached?
- Can Memcached cluster handle fault tolerance? If yes, how?
Data Consistency and Expiry
- How does Memcached handle data consistency?
- What is the default expiration policy in Memcached?
- How do you set an expiration time for keys in Memcached?
- What happens when a key expires in Memcached?
- How does Memcached handle stale data?
- What is the impact of lazy expiration in Memcached?
- Can Memcached guarantee strong consistency? Why or why not?
- How can you invalidate cached data in Memcached?
- What is the role of the flush_all command in Memcached?
- How does Memcached deal with inconsistent data across nodes?
Real-World Use Cases
- How would you use Memcached to improve the performance of a web application?
- Describe how Memcached is used in session storage.
- How does Memcached help in database query caching?
- Can Memcached be used as a message queue? Why or why not?
- What are the best practices for using Memcached in a microservices architecture?
- How does Memcached handle frequent writes in a high-traffic application?
- What are the trade-offs of using Memcached in e-commerce platforms?
- How would you implement rate limiting using Memcached?
- What is a common use case for Memcached in social media platforms?
- How do you use Memcached for content delivery network (CDN) caching?
Security and Authentication
- How does Memcached handle security?
- What is SASL authentication, and how is it configured in Memcached?
- How do you secure Memcached in a production environment?
- Can Memcached be used over SSL/TLS connections?
- What are the risks of running Memcached in an open network?
- How do you restrict unauthorized access to Memcached?
- How do you monitor for potential security breaches in Memcached?
- What is the impact of DDOS attacks on Memcached?
- What are best practices for securing Memcached in cloud environments?
- How do you enable firewall rules for Memcached?
Troubleshooting and Debugging
- What tools can you use to debug Memcached performance issues?
- How do you identify and resolve high latency in Memcached?
- What are the common causes of cache miss in Memcached?
- How do you monitor key expiry and cache utilization?
- What happens when Memcached runs out of memory?
- How do you resolve connection timeouts in Memcached?
- What are slab allocation issues, and how do you address them?
- How do you analyze Memcached logs?
- What is the impact of frequent evictions on performance?
- How do you handle OOM (Out of Memory) errors in Memcached?
Advanced Concepts
- How do you implement multi-tenancy in Memcached?
- What is the role of memcachedb, and how does it differ from Memcached?
- How do you integrate Memcached with Docker and Kubernetes?
- What is the role of Memcached clients, and how do they work?
- Explain how compression can be applied to data in Memcached.
- How do you handle cross-datacenter replication with Memcached?
- What are the differences between Memcached and Hazelcast?
- Can Memcached support transactional operations? If yes, how?
- What is the impact of serialization/deserialization on Memcached performance?
- How does Memcached integrate with modern frameworks like Django or Spring?
Future and Trends
- What are the recent enhancements in Memcached?
- How does Memcached compare to other modern caching systems?
- What are emerging use cases for Memcached in AI/ML workflows?
- How does Memcached handle serverless architectures?
- What improvements would you suggest for Memcached?
- What is the role of Memcached in edge computing?
- Can Memcached support time-series data efficiently?
- How does Memcached handle data compression and deduplication?
- What are some open-source alternatives to Memcached?
- How does Memcached adapt to distributed cloud environments?
Top comments (0)