18 lines
692 B
Markdown
18 lines
692 B
Markdown
This is a read-only variant of the `EVAL` command that cannot execute commands that modify data.
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For more information about when to use this command vs `EVAL`, please refer to [Read-only scripts](/docs/manual/programmability/#read-only_scripts).
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For more information about `EVAL` scripts please refer to [Introduction to Eval Scripts](/topics/eval-intro).
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@examples
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```
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> SET mykey "Hello"
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OK
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> EVAL_RO "return redis.call('GET', KEYS[1])" 1 mykey
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"Hello"
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> EVAL_RO "return redis.call('DEL', KEYS[1])" 1 mykey
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(error) ERR Error running script (call to b0d697da25b13e49157b2c214a4033546aba2104): @user_script:1: @user_script: 1: Write commands are not allowed from read-only scripts.
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```
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