SLOWLOG HELP

Introduction and Use Case(s)

The SLOWLOG HELP command in Redis provides information about the subcommands available for managing the Slow Log feature. The Slow Log is used to log queries that exceed a specified execution time threshold, helping identify performance bottlenecks.

Syntax

  1. SLOWLOG HELP

Parameter Explanations

The SLOWLOG HELP command does not take any parameters.

Return Values

The command returns an array of strings where each string describes a specific subcommand related to the Slow Log. For example:

  1. 1) "SLOWLOG <subcommand> [argument [arguments ...]]"
  2. 2) "  GET     - return top <count> entries from the slowlog (default: 10)"
  3. 3) "  LEN     - return length of slowlog"
  4. 4) "  RESET   - reset the slowlog"
  5. 5) "  HELP    - show this help"

Code Examples

  1. dragonfly> SLOWLOG HELP
  2. 1) "SLOWLOG <subcommand> [argument [arguments ...]]"
  3. 2) "  GET     - return top <count> entries from the slowlog (default: 10)"
  4. 3) "  LEN     - return length of slowlog"
  5. 4) "  RESET   - reset the slowlog"
  6. 5) "  HELP    - show this help"

Best Practices

Using SLOWLOG HELP can be particularly useful when you’re unfamiliar with the Slow Log’s subcommands or need a quick reference without leaving the Redis CLI.

Common Mistakes

  • Assuming Parameters: The SLOWLOG HELP command does not accept any parameters. Providing parameters will result in an error.
  • Ignoring Output Format: Not recognizing that the output is an array of strings which need to be parsed to understand the available subcommands.

FAQs

What is the primary purpose of the SLOWLOG feature?

The SLOWLOG feature logs commands that exceed a specified execution time, assisting in identifying and troubleshooting performance issues.

How often should I check the Slow Log?

Regularly monitoring the Slow Log, especially after deploying new code or configurations, helps quickly identify and resolve performance problems.