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The process of removing outdated data from the cache.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