EVAL_RO

Syntax

EVAL_RO script numkeys [key [key ...]] [arg [arg ...]]

Available since:: 7.0.0
Time complexity:: Depends on the script that is executed.
ACL categories:: @slow, @scripting,

This is a read-only variant of the EVAL command that cannot execute commands that modify data.

For more information about when to use this command vs EVAL, please refer to Read-only scripts.

For more information about EVAL scripts please refer to Introduction to Eval Scripts.

Examples

> SET mykey "Hello"
OK

> EVAL_RO "return redis.call('GET', KEYS[1])" 1 mykey
"Hello"

> EVAL_RO "return redis.call('DEL', KEYS[1])" 1 mykey
(error) ERR Error running script (call to b0d697da25b13e49157b2c214a4033546aba2104): @user_script:1: @user_script: 1: Write commands are not allowed from read-only scripts.

RESP2/RESP3 Reply

The return value depends on the script that was executed.