await redis.set("key", "helloworld")
const length = await redis.setrange("key", 5, "redis");
console.log(length); // 10

// The value of "key" is now "helloredis"
The SETRANGE command in Redis is used to modify a portion of the value of a key by replacing a substring within the key’s existing value. It allows you to update part of the string value associated with a specific key at a specified offset.

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Arguments

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key
string
required
The name of the Redis key for which you want to modify the value.
​
offset
integer
required
The zero-based index in the value where you want to start replacing characters.
​
value
string
required
The new string that you want to insert at the specified offset in the existing value.

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Response

The length of the value after it was modified.
await redis.set("key", "helloworld")
const length = await redis.setrange("key", 5, "redis");
console.log(length); // 10

// The value of "key" is now "helloredis"