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The process of removing outdated data from the cache.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