> ## Documentation Index
> Fetch the complete documentation index at: https://upstash.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# EVALSHA

> Evaluate a cached Lua script server side.

`EVALSHA` is like `EVAL` but instead of sending the script over the wire every time, you reference the script by its SHA1 hash. This is useful for caching scripts on the server side.

## Arguments

<ParamField body="sha" type="str" required>
  The sha1 hash of the script.
</ParamField>

<ParamField body="keys" type="List[str]" required>
  All of the keys accessed in the script
</ParamField>

<ParamField body="args" type="List[str]" required>
  All of the arguments you passed to the script
</ParamField>

## Response

<ResponseField type="?" required>
  The result of the script.
</ResponseField>

<RequestExample>
  ```py Example theme={"system"}
  result = redis.evalsha("fb67a0c03b48ddbf8b4c9b011e779563bdbc28cb", args=["hello"])
  assert result = "hello"
  ```
</RequestExample>