Eladio Rocha
Quiz by , created 16 days ago

Explore caching strategies for high-performance, scalable systems. Learn how caching reduces database load, the importance of cache expiration policies, and solutions for challenges like the cold-start and celebrity problems. Discover best practices for implementing distributed caching layers effectively.

1
0
0
Eladio Rocha
Created by Eladio Rocha 16 days ago
Close

Caching Strategies for High-Performance Systems

Question 1 of 9

1

What is a primary reason for using a caching layer in a high-performance system?

Select one of the following:

  • To simplify database schema design.

  • To reduce the frequency of accessing the database disk.

  • To improve write throughput of the database.

  • To avoid using load balancers.

Explanation

Question 2 of 9

1

Why is a horizontally distributed caching layer advantageous?

Select one of the following:

  • It eliminates the need for a database.

  • It allows the caching layer to be scaled independently of the application servers.

  • It enables better enforcement of database constraints.

  • It reduces the number of application servers needed.

Explanation

Question 3 of 9

1

What role does a hash function play in a distributed caching system?

Select one of the following:

  • It ensures consistent cache invalidation.

  • It determines which cache server stores specific data.

  • It manages the redundancy of cache servers.

  • It calculates the expiration time for cached data.

Explanation

Question 4 of 9

1

What type of caching architecture keeps the cache local to application servers?

Select one of the following:

  • Independent caching fleet.

  • Integrated caching within application servers.

  • Hybrid caching model.

  • Disk-based caching system.

Explanation

Question 5 of 9

1

What is the "celebrity problem" in caching?

Select one of the following:

  • Difficulty in caching data for infrequently accessed keys.

  • High traffic to specific cached data causing uneven load distribution.

  • Inability to cache frequently updated information.

  • Issues with redundancy in cached data.

Explanation

Question 6 of 9

1

What is a significant concern when dealing with a cold-start cache problem?

Select one of the following:

  • Cache data not invalidating properly.

  • High initial traffic hitting the database until the cache is warmed up.

  • Inability to scale the cache horizontally.

  • Expired cache entries causing stale data.

Explanation

Question 7 of 9

1

Why is setting an appropriate expiration policy for cached data important?

Select one of the following:

  • To ensure the database schema remains consistent.

  • To balance between data freshness and cache effectiveness.

  • To allow caching of frequently updated data.

  • To reduce the need for redundancy in the cache.

Explanation

Question 8 of 9

1

What type of applications benefit the most from caching?

Select one of the following:

  • Applications with frequent write operations.

  • Applications with a high read-to-write ratio.

  • Applications requiring real-time data consistency.

  • Applications with low user traffic.

Explanation

Question 9 of 9

1

What is one approach to mitigate the cold-start problem in caching?

Select one of the following:

  • Using a write-through caching strategy.

  • Preloading the cache with historical data or simulated traffic before deployment.

  • Shortening the cache expiration time.

  • Disabling caching temporarily.

Explanation

Previous
Next