Notice: This page requires JavaScript to function properly.
Please enable JavaScript in your browser settings or update your browser.Aprenda EXISTS Command | The Essential Redis Commands
Introduction to Redis

bookEXISTS Command

EXISTS Command

If you simply need to check whether a key exists in Redis without retrieving its value, you can use the EXISTS command.

Example Usage

If you provide a single key, the result will be 1 if the key exists, or 0 if it does not.

In this case, the result will be 1 since the key mykey exists.

When multiple keys are specified, the command will return the number of keys that exist in Redis. If we also have keys key1 and key3 in the database, this query will return 2, since only key1 and key3 exist in the database.

question mark

What will the EXISTS command return when checking multiple keys?

Select the correct answer

Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Seção 2. Capítulo 3

Pergunte à IA

expand

Pergunte à IA

ChatGPT

Pergunte o que quiser ou experimente uma das perguntas sugeridas para iniciar nosso bate-papo

Awesome!

Completion rate improved to 3.33

bookEXISTS Command

Deslize para mostrar o menu

EXISTS Command

If you simply need to check whether a key exists in Redis without retrieving its value, you can use the EXISTS command.

Example Usage

If you provide a single key, the result will be 1 if the key exists, or 0 if it does not.

In this case, the result will be 1 since the key mykey exists.

When multiple keys are specified, the command will return the number of keys that exist in Redis. If we also have keys key1 and key3 in the database, this query will return 2, since only key1 and key3 exist in the database.

question mark

What will the EXISTS command return when checking multiple keys?

Select the correct answer

Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Seção 2. Capítulo 3
some-alt