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Showing 1881–1900 of 2015 results

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System design · Matching
Difficulty: Medium
Match the descriptions to these scaling approaches terms: Horizontal scaling, Vertical scaling, Autoscaling, Load balancer.
Scaling approachesConcept relationships
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System design · Matching
Difficulty: Medium
Match the descriptions to these service entry points terms: Reverse proxy, API gateway, Service discovery, Health check.

Service entry pointsConcept relationships

System design · Matching

Difficulty: Hard

Match the descriptions to these cache write and read paths terms: Cache-aside, Read-through cache, Write-through cache, Write-back cache.

Cache write and read pathsConcept relationships

System design · Matching

Difficulty: Hard

Match the descriptions to these cache failure modes terms: Cache stampede, Cache penetration, Cache avalanche, Stale cache entry.

Cache failure modesConcept relationships

System design · Matching

Difficulty: Hard

Match the descriptions to these partitioning choices terms: Range partitioning, Hash partitioning, Consistent hashing, Hot partition.

Partitioning choicesConcept relationships

System design · Numerical Answer

Difficulty: Medium

A stable system averages 12 arrivals per second and 0.20 seconds per item in the system. By Little’s law, what is the average number of items? Enter a number within 0.001.

Little's lawQueueing

System design · Numerical Answer

Difficulty: Medium

A cache serves 70% of requests in 1 ms; the remaining requests take 20 ms total. What is the mean request latency in ms? Tolerance: 0.001.

CachingExpected latency

System design · Numerical Answer

Difficulty: Medium

Assume one server processes at most 20 jobs per second. Jobs arrive at 4 per second. What is arrival rate divided by service rate? Tolerance: 0.0001.

UtilizationQueue capacity

System design · Numerical Answer

Difficulty: Medium

A stable system averages 16 arrivals per second and 0.25 seconds per item in the system. By Little’s law, what is the average number of items? Enter a number within 0.001.

Little's lawQueueing

System design · Numerical Answer

Difficulty: Medium

A cache serves 72% of requests in 2 ms; the remaining requests take 21 ms total. What is the mean request latency in ms? Tolerance: 0.001.

CachingExpected latency

System design · Numerical Answer

Difficulty: Medium

Assume one server processes at most 21 jobs per second. Jobs arrive at 5 per second. What is arrival rate divided by service rate? Tolerance: 0.0001.

UtilizationQueue capacity

System design · Numerical Answer

Difficulty: Medium

A stable system averages 20 arrivals per second and 0.30 seconds per item in the system. By Little’s law, what is the average number of items? Enter a number within 0.001.

Little's lawQueueing

System design · Numerical Answer

Difficulty: Medium

A cache serves 74% of requests in 3 ms; the remaining requests take 22 ms total. What is the mean request latency in ms? Tolerance: 0.001.

CachingExpected latency

System design · Numerical Answer

Difficulty: Medium

Assume one server processes at most 22 jobs per second. Jobs arrive at 6 per second. What is arrival rate divided by service rate? Tolerance: 0.0001.

UtilizationQueue capacity

System design · Numerical Answer

Difficulty: Medium

A stable system averages 24 arrivals per second and 0.35 seconds per item in the system. By Little’s law, what is the average number of items? Enter a number within 0.001.

Little's lawQueueing

System design · Numerical Answer

Difficulty: Medium

A cache serves 76% of requests in 1 ms; the remaining requests take 23 ms total. What is the mean request latency in ms? Tolerance: 0.001.

CachingExpected latency

System design · Numerical Answer

Difficulty: Medium

Assume one server processes at most 23 jobs per second. Jobs arrive at 7 per second. What is arrival rate divided by service rate? Tolerance: 0.0001.

UtilizationQueue capacity

System design · Numerical Answer

Difficulty: Medium

A stable system averages 28 arrivals per second and 0.40 seconds per item in the system. By Little’s law, what is the average number of items? Enter a number within 0.001.

Little's lawQueueing

System design · Numerical Answer

Difficulty: Medium

A cache serves 78% of requests in 2 ms; the remaining requests take 24 ms total. What is the mean request latency in ms? Tolerance: 0.001.

CachingExpected latency

System design · Numerical Answer

Difficulty: Medium

Assume one server processes at most 24 jobs per second. Jobs arrive at 8 per second. What is arrival rate divided by service rate? Tolerance: 0.0001.

UtilizationQueue capacity

Showing 1881–1900 of 2015 results

1…94 95 96…101