Recall & Review
beginner
What is the purpose of the
open_file_cache directive in nginx?The
open_file_cache directive caches information about open files to reduce file system lookups and improve performance.Click to reveal answer
intermediate
Which parameters are commonly set with
open_file_cache?Common parameters include
max (maximum number of cached files), inactive (time after which cached items are removed if not used), and min_uses (minimum number of uses before caching).Click to reveal answer
intermediate
What does the
open_file_cache_valid directive control?It sets how often nginx checks if cached file information is still valid, by specifying a time interval.
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beginner
How does enabling
open_file_cache affect nginx performance?It reduces the number of file system calls, which lowers latency and CPU usage, making nginx serve files faster.
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beginner
What happens if
open_file_cache is not used in a high-traffic nginx server?Nginx will perform more frequent file system lookups, increasing CPU load and slowing down response times.
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What does the
open_file_cache directive do in nginx?✗ Incorrect
The
open_file_cache directive caches file info to reduce file system calls.Which parameter sets the maximum number of cached files in
open_file_cache?✗ Incorrect
The
max parameter defines the maximum number of cached files.What does
open_file_cache_valid control?✗ Incorrect
open_file_cache_valid sets the interval for cache validation.If
open_file_cache is disabled, what is a likely effect?✗ Incorrect
Without caching, nginx does more file system calls, increasing CPU load.
Which directive controls how many times a file must be used before caching with
open_file_cache?✗ Incorrect
min_uses sets the minimum number of uses before caching a file.Explain how the
open_file_cache directive improves nginx performance.Think about how caching avoids repeated work.
You got /4 concepts.
Describe the key parameters of
open_file_cache and their roles.Focus on what controls cache size, duration, and validation.
You got /4 concepts.