String functions

strSet

The strSet command stores or updates a string value associated with a specified key. If the key already exists, its value is overwritten.

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Simple use

      const res = await client.strSet("user:greeting", "World World")
    console.log(res);

Full Example

  async function main() {
  const client = fleare.createClient("127.0.0.1", 9219);
  ...
  
  try {
    await client.connect();

    const res = await client.strSet("user:greeting", "World World")
    console.log(res);

  } catch (err) {
    console.error(err);
  } finally {
    await client.close();
  }
}

Output

  ""

strAppend

The strAppend command is used to append one or more string values to an existing string stored at a given key. If the key does not exist, it creates a new entry with the concatenated value.

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Simple use

      const res = await client.strAppend("user:greeting", "World", " World")
    console.log(res);

Output

  ""

strRange

The strRange command returns a substring from a string value stored at a specified key, based on start and end offsets (inclusive). It supports negative indices, enabling easy access to characters counted from the end of the string.

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Simple use

      const res = await client.strRange("user:greeting", 0, -1);
    console.log(res);

Output

  World World

strGet

The strGet command is used to retrieve the string value associated with a specified key. If the key does not exist or has a different data type, appropriate responses are returned. This command is safe to use for read-only operations and ensures type safety for string keys.

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Simple use

  const res = await client.strGet("user:greeting");
console.log(res);

Output

  World World

strLength

The strLength command is used to retrieve the length (in characters) of a string value stored at a specified key in the Fleare key-value store. If the key does not exist, it returns 0. It validates the key and ensures the value is of string type.

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Simple use

  const res = await client.strLength("user:greeting");
console.log(res);

Output

  11