MEMORY HELP

MEMORY HELP

Introduction and Use Case(s)

The MEMORY HELP command in Redis provides a list of subcommands related to memory usage, offering guidance on how to understand and optimize memory consumption. This command is particularly useful for developers and system administrators who need to monitor and manage the memory footprint of their Redis instances.

Syntax

MEMORY HELP

Parameter Explanations

The MEMORY HELP command does not take any parameters. It simply returns a list of available subcommands under the MEMORY command family, along with brief descriptions of what each subcommand does.

Return Values

The MEMORY HELP command returns an array of strings, where each string provides information about a subcommand related to memory usage. For example:

1) "MEMORY DOCTOR"
2) " - Outputs memory problems report"
3) "MEMORY MALLOC-STATS"
4) " - Show allocator internal stats"
5) "MEMORY PURGE"
6) " - Attempt to purge dirty pages for reuse"
7) "MEMORY STATS"
8) " - Show memory usage details"
9) "MEMORY USAGE <key>"
10) " - Estimate memory usage of key"

Code Examples

dragonfly> MEMORY HELP
1) "MEMORY DOCTOR"
2) " - Outputs memory problems report"
3) "MEMORY MALLOC-STATS"
4) " - Show allocator internal stats"
5) "MEMORY PURGE"
6) " - Attempt to purge dirty pages for reuse"
7) "MEMORY STATS"
8) " - Show memory usage details"
9) "MEMORY USAGE <key>"
10) " - Estimate memory usage of key"

Best Practices

Regularly use MEMORY HELP to familiarize yourself with the available tools for monitoring and managing memory in Redis.
Combine MEMORY HELP with other MEMORY subcommands like MEMORY STATS and MEMORY DOCTOR to get a comprehensive view of your instance’s memory health.

Common Mistakes

Ignoring the output of MEMORY HELP and underutilizing the full suite of memory management tools provided by Redis.
Misinterpreting the purpose of MEMORY HELP; it is an informational command and does not perform any memory diagnostics or optimizations by itself.

FAQs

What is the purpose of `MEMORY HELP`?

MEMORY HELP provides a list of memory-related subcommands in Redis and brief descriptions of their functionalities, helping users to understand and utilize these commands effectively.