Eladio Rocha
Test por , creado hace 16 días

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.

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Eladio Rocha
Creado por Eladio Rocha hace 16 días
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Caching Strategies for High-Performance Systems

Pregunta 1 de 9

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

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación

Pregunta 2 de 9

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Why is a horizontally distributed caching layer advantageous?

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación

Pregunta 3 de 9

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

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación

Pregunta 4 de 9

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

Selecciona una de las siguientes respuestas posibles:

  • Independent caching fleet.

  • Integrated caching within application servers.

  • Hybrid caching model.

  • Disk-based caching system.

Explicación

Pregunta 5 de 9

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What is the "celebrity problem" in caching?

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación

Pregunta 6 de 9

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

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación

Pregunta 7 de 9

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

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación

Pregunta 8 de 9

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What type of applications benefit the most from caching?

Selecciona una de las siguientes respuestas posibles:

  • Applications with frequent write operations.

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

  • Applications requiring real-time data consistency.

  • Applications with low user traffic.

Explicación

Pregunta 9 de 9

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

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación