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HLDsystem_design~10 mins

Fan-out on write vs fan-out on read in HLD - Interactive Practice

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Practice - 5 Tasks
Answer the questions below
1fill in blank
easy

Complete the code to describe fan-out on write.

HLD
In fan-out on write, the system [1] updates to all followers immediately after a write.
Drag options to blanks, or click blank then click option'
Apushes
Bdelays
Cignores
Dreads
Attempts:
3 left
💡 Hint
Common Mistakes
Confusing fan-out on write with fan-out on read.
Thinking the system delays updates.
2fill in blank
medium

Complete the code to describe fan-out on read.

HLD
In fan-out on read, the system [1] updates to followers only when a read request happens.
Drag options to blanks, or click blank then click option'
Apushes
Bdelays
Cpulls
Dfetches
Attempts:
3 left
💡 Hint
Common Mistakes
Mixing up push and pull in fan-out strategies.
Assuming updates happen immediately after write.
3fill in blank
hard

Fix the error in the statement about fan-out on write.

HLD
Fan-out on write [1] the system to update followers only during read requests.
Drag options to blanks, or click blank then click option'
Aforces
Bprevents
Callows
Dignores
Attempts:
3 left
💡 Hint
Common Mistakes
Thinking fan-out on write updates only on reads.
Confusing prevents with allows.
4fill in blank
hard

Fill both blanks to complete the comparison.

HLD
Fan-out on write [1] latency on writes but [2] latency on reads.
Drag options to blanks, or click blank then click option'
Aincreases
Bdecreases
Creduces
Dadds
Attempts:
3 left
💡 Hint
Common Mistakes
Mixing up which latency increases or decreases.
Assuming writes are always fast.
5fill in blank
hard

Fill all three blanks to complete the fan-out on read description.

HLD
Fan-out on read [1] write latency, [2] read latency, and [3] complexity in read handling.
Drag options to blanks, or click blank then click option'
Areduces
Bincreases
Cadds
Dignores
Attempts:
3 left
💡 Hint
Common Mistakes
Thinking fan-out on read increases write latency.
Ignoring added complexity in reads.