Memory usage analysis (INFO memory) in Redis - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to check Redis memory usage.

Redis

INFO [1]

Drag options to blanks, or click blank then click option'

Astats

Bclients

Cmemory

Dpersistence

Attempts:

3 left

💡 Hint

Common Mistakes

Using INFO stats instead of INFO memory.

Using INFO clients which shows client info, not memory.

The INFO memory command shows memory usage details in Redis.

2fill in blank

medium

Complete the command to get the peak memory usage in Redis.

Redis

INFO memory | grep [1]

Drag options to blanks, or click blank then click option'

Aused_memory_peak

Bmemory_fragmentation_ratio

Cused_memory

Dmaxmemory

Attempts:

3 left

💡 Hint

Common Mistakes

Using used_memory which shows current usage, not peak.

Using maxmemory which is a config limit, not usage.

The used_memory_peak field shows the highest memory Redis has used.

3fill in blank

hard

Fix the error in the command to show memory fragmentation ratio.

Redis

INFO memory | grep [1]

Drag options to blanks, or click blank then click option'

Amemory_fragmentation

Bmem_fragmentation_ratio

Cfragmentation_ratio

Dmem_fragment_ratio

Attempts:

3 left

💡 Hint

Common Mistakes

Using incomplete or incorrect field names causing no output.

Misspelling fragmentation or ratio.

The correct field name is mem_fragmentation_ratio in Redis INFO memory output.

4fill in blank

hard

Fill both blanks to create a command that shows used memory and peak memory.

Redis

INFO memory | grep -E '[1]|[2]'

Drag options to blanks, or click blank then click option'

Aused_memory

Bused_memory_peak

Cmaxmemory

Dmemory_fragmentation_ratio

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong field names causing no matches.

Forgetting to quote the pattern or use -E option.

This command uses grep with a pattern to show both used_memory and used_memory_peak fields.

5fill in blank

hard

Fill all three blanks to create a command that shows used memory, peak memory, and fragmentation ratio.

Redis

INFO memory | grep -E '[1]|[2]|[3]'

Drag options to blanks, or click blank then click option'

Aused_memory

Bused_memory_peak

Cmem_fragmentation_ratio

Dmaxmemory

Attempts:

3 left

💡 Hint

Common Mistakes

Using maxmemory instead of fragmentation ratio.

Missing quotes or incorrect field names.

This command filters the INFO memory output to show used_memory, used_memory_peak, and mem_fragmentation_ratio fields.