Caching Expert
How would you handle cache synchronization in a distributed environment?
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Use distributed locks and consensus protocols to ensure data consistency.
Use caching only for read-heavy workloads to avoid synchronization issues.
Synchronize caches by increasing cache size.
Synchronize caches by using different keys for each cache.
Name situations when to use different replacement strategies?
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Change the strategy based on server load only.
Use the replacement strategy with the longest name.
Always use the same replacement strategy regardless of the situation.
Use different strategies based on access patterns and data size.
What is cache replacement?
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Compressing cache data to save space.
Encrypting cache data for security purposes.
Backing up cache data to a secure location.
Replacing old data in the cache with new data.
What are some common cache writing strategies?
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Write-through, write-back, and write-around.
Compression, encryption, and replication.
Load balancing, failover, and redundancy.
Sharding, partitioning, and clustering.
Name some common scenarios when caching should be used.
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Caching is ideal for storing user passwords.
Caching should be used for frequently accessed data to reduce load times.
Caching is useful for encrypting sensitive information.
Caching helps in database schema design.
Describe the impact of cache size on performance.
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Cache size has no impact on system performance.
Increasing cache size reduces the need for server backups.
Smaller cache sizes always increase data retrieval speed.
Larger cache sizes generally improve performance by reducing cache misses.
Name some cache invalidation strategies.
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Load balancing, failover, and clustering.
Sharding, replication, and partitioning.
Time-to-live, write-through, and cache-aside.
Compression, encryption, and decryption.
What is cache invalidation?
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The action of encrypting cache data for security.
The process of removing outdated data from the cache.
The method of backing up cache data to a secure location.
The process of expanding cache storage capacity.
What is a cache miss?
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A scenario where data retrieval is slower than usual.
A situation where the server fails to respond.
An event where the database becomes unavailable.
An event where requested data is not found in the cache.
What is a cache key and how is it used?
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A unique identifier used to store and retrieve cached data.
A special key used to unlock secure databases.
A tool for managing database connections.
A password used for user authentication.
What is caching?
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A process of storing frequently accessed data in a temporary storage.
A technique to balance load among servers.
A method of securing data using encryption.
A process of compressing data to save storage space.