Caching Expert

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How would you handle cache synchronization in a distributed environment?

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1

Use caching only for read-heavy workloads to avoid synchronization issues.

2

Synchronize caches by using different keys for each cache.

3

Synchronize caches by increasing cache size.

4

Use distributed locks and consensus protocols to ensure data consistency.

Name situations when to use different replacement strategies?

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1

Change the strategy based on server load only.

2

Use the replacement strategy with the longest name.

3

Always use the same replacement strategy regardless of the situation.

4

Use different strategies based on access patterns and data size.

What is cache replacement?

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1

Compressing cache data to save space.

2

Replacing old data in the cache with new data.

3

Backing up cache data to a secure location.

4

Encrypting cache data for security purposes.

What are some common cache writing strategies?

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1

Load balancing, failover, and redundancy.

2

Compression, encryption, and replication.

3

Write-through, write-back, and write-around.

4

Sharding, partitioning, and clustering.

Name some common scenarios when caching should be used.

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1

Caching should be used for frequently accessed data to reduce load times.

2

Caching helps in database schema design.

3

Caching is useful for encrypting sensitive information.

4

Caching is ideal for storing user passwords.

Describe the impact of cache size on performance.

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1

Smaller cache sizes always increase data retrieval speed.

2

Larger cache sizes generally improve performance by reducing cache misses.

3

Increasing cache size reduces the need for server backups.

4

Cache size has no impact on system performance.

Name some cache invalidation strategies.

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1

Load balancing, failover, and clustering.

2

Compression, encryption, and decryption.

3

Time-to-live, write-through, and cache-aside.

4

Sharding, replication, and partitioning.

What is cache invalidation?

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1

The action of encrypting cache data for security.

2

The process of expanding cache storage capacity.

3

The method of backing up cache data to a secure location.

4

The process of removing outdated data from the cache.

What is a cache miss?

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1

An event where requested data is not found in the cache.

2

An event where the database becomes unavailable.

3

A situation where the server fails to respond.

4

A scenario where data retrieval is slower than usual.

What is a cache key and how is it used?

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1

A unique identifier used to store and retrieve cached data.

2

A special key used to unlock secure databases.

3

A tool for managing database connections.

4

A password used for user authentication.

What is caching?

Select the correct answer

1

A process of storing frequently accessed data in a temporary storage.

2

A process of compressing data to save storage space.

3

A method of securing data using encryption.

4

A technique to balance load among servers.