40088079
Descripción
Test por Eladio Rocha, actualizado hace 16 días
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Creado por Eladio Rocha
hace 16 días
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Pregunta 1
Pregunta
What is a primary reason for using a caching layer in a high-performance system?
Respuesta
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To simplify database schema design.
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To reduce the frequency of accessing the database disk.
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To improve write throughput of the database.
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To avoid using load balancers.
Pregunta 2
Pregunta
Why is a horizontally distributed caching layer advantageous?
Respuesta
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It eliminates the need for a database.
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It allows the caching layer to be scaled independently of the application servers.
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It enables better enforcement of database constraints.
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It reduces the number of application servers needed.
Pregunta 3
Pregunta
What role does a hash function play in a distributed caching system?
Respuesta
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It ensures consistent cache invalidation.
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It determines which cache server stores specific data.
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It manages the redundancy of cache servers.
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It calculates the expiration time for cached data.
Pregunta 4
Pregunta
What type of caching architecture keeps the cache local to application servers?
Respuesta
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Independent caching fleet.
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Integrated caching within application servers.
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Hybrid caching model.
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Disk-based caching system.
Pregunta 5
Pregunta
What is the "celebrity problem" in caching?
Respuesta
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Difficulty in caching data for infrequently accessed keys.
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High traffic to specific cached data causing uneven load distribution.
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Inability to cache frequently updated information.
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Issues with redundancy in cached data.
Pregunta 6
Pregunta
What is a significant concern when dealing with a cold-start cache problem?
Respuesta
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Cache data not invalidating properly.
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High initial traffic hitting the database until the cache is warmed up.
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Inability to scale the cache horizontally.
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Expired cache entries causing stale data.
Pregunta 7
Pregunta
Why is setting an appropriate expiration policy for cached data important?
Respuesta
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To ensure the database schema remains consistent.
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To balance between data freshness and cache effectiveness.
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To allow caching of frequently updated data.
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To reduce the need for redundancy in the cache.
Pregunta 8
Pregunta
What type of applications benefit the most from caching?
Respuesta
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Applications with frequent write operations.
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Applications with a high read-to-write ratio.
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Applications requiring real-time data consistency.
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Applications with low user traffic.
Pregunta 9
Pregunta
What is one approach to mitigate the cold-start problem in caching?
Respuesta
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Using a write-through caching strategy.
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Preloading the cache with historical data or simulated traffic before deployment.
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Shortening the cache expiration time.
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Disabling caching temporarily.
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