Summary  
The chapter covers how to retrieve the value associated with a given key in a key-value store using the GET command, returning nil when the key is absent.

General domain of usage  
In-memory data caching

## GET Command

After storing a **value** in a **key**, it makes sense that we would want to **retrieve** it, and that's exactly what the `GET` **command** allows us to do.

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <link
      rel="stylesheet"
      href="https://cdn.jsdelivr.net/npm/notiflix@2.7.0/dist/notiflix-aio-2.7.0.min.css"
    />
    <link
      rel="stylesheet"
      href="https://staging-content-media-cdn.codefinity.com/courses/c1087363-9025-4c37-8d5e-983a32a007e9/text-boxes-section/copyable-text-box.css"
    />
  </head>
  <body>
    <div class="text-widget">
      
      <input
        type="text"
        class="text-field"
        id="widget1-text"
        value="GET [key]
"
      />
      
      <button
        class="copy-button"
        onclick="handleClick('widget1-text', 'widget1-notify')"
      >
        <svg width="20" height="20" viewBox="0 0 32 32" xml:space="preserve">
          <g>
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              d="m26.121 6.707-3.828-3.828A2.98 2.98 0 0 0 20.172 2H12a3.003 3.003 0 0 0-3 3v1H8a3.003 3.003 0 0 0-3 3v18a3.003 3.003 0 0 0 3 3h12a3.003 3.003 0 0 0 3-3v-1h1a3.003 3.003 0 0 0 3-3V8.829a2.982 2.982 0 0 0-.879-2.122ZM22 5.414 23.586 7H22ZM20 28H8a1.001 1.001 0 0 1-1-1V9a1.001 1.001 0 0 1 1-1h8v3a2.002 2.002 0 0 0 2 2h3v14a1 1 0 0 1-1 1ZM18 9.414 19.586 11H18ZM24 24h-1V12.829a2.982 2.982 0 0 0-.879-2.122l-3.828-3.828A2.98 2.98 0 0 0 16.171 6H11V5a1.001 1.001 0 0 1 1-1h8v3a2.002 2.002 0 0 0 2 2h3v14a1 1 0 0 1-1 1Zm-6-8h-8a1 1 0 0 1 0-2h8a1 1 0 0 1 0 2Zm0 4h-8a1 1 0 0 1 0-2h8a1 1 0 0 1 0 2Zm0 4h-8a1 1 0 0 1 0-2h8a1 1 0 0 1 0 2Z"
              fill="#a6b8e6"
            ></path>
          </g>
        </svg>
      </button>
    </div>
    
    <script src="https://cdn.jsdelivr.net/npm/notiflix@2.7.0/dist/notiflix-aio-2.7.0.min.js"></script>
    <script src="https://staging-content-media-cdn.codefinity.com/courses/c1087363-9025-4c37-8d5e-983a32a007e9/text-boxes-section/copyable-text-box.js"></script>
  </body>
</html>

Inside the `[key]` **placeholder**, you should **provide** the **name** of the **key**, which will **return** the **value** stored under it.

## Example Usage

We already have a **key** called `mykey`, with the **value** `Hello, Redis!` stored **under it**. Let's retrieve the **value** using the **key**.

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <link
      rel="stylesheet"
      href="https://cdn.jsdelivr.net/npm/notiflix@2.7.0/dist/notiflix-aio-2.7.0.min.css"
    />
    <link
      rel="stylesheet"
      href="https://staging-content-media-cdn.codefinity.com/courses/c1087363-9025-4c37-8d5e-983a32a007e9/text-boxes-section/copyable-text-box.css"
    />
  </head>
  <body>
    <div class="text-widget">
      
      <input
        type="text"
        class="text-field"
        id="widget1-text"
        value="GET mykey
"
      />
      
      <button
        class="copy-button"
        onclick="handleClick('widget1-text', 'widget1-notify')"
      >
        <svg width="20" height="20" viewBox="0 0 32 32" xml:space="preserve">
          <g>
            <path
              d="m26.121 6.707-3.828-3.828A2.98 2.98 0 0 0 20.172 2H12a3.003 3.003 0 0 0-3 3v1H8a3.003 3.003 0 0 0-3 3v18a3.003 3.003 0 0 0 3 3h12a3.003 3.003 0 0 0 3-3v-1h1a3.003 3.003 0 0 0 3-3V8.829a2.982 2.982 0 0 0-.879-2.122ZM22 5.414 23.586 7H22ZM20 28H8a1.001 1.001 0 0 1-1-1V9a1.001 1.001 0 0 1 1-1h8v3a2.002 2.002 0 0 0 2 2h3v14a1 1 0 0 1-1 1ZM18 9.414 19.586 11H18ZM24 24h-1V12.829a2.982 2.982 0 0 0-.879-2.122l-3.828-3.828A2.98 2.98 0 0 0 16.171 6H11V5a1.001 1.001 0 0 1 1-1h8v3a2.002 2.002 0 0 0 2 2h3v14a1 1 0 0 1-1 1Zm-6-8h-8a1 1 0 0 1 0-2h8a1 1 0 0 1 0 2Zm0 4h-8a1 1 0 0 1 0-2h8a1 1 0 0 1 0 2Zm0 4h-8a1 1 0 0 1 0-2h8a1 1 0 0 1 0 2Z"
              fill="#a6b8e6"
            ></path>
          </g>
        </svg>
      </button>
    </div>
    
    <script src="https://cdn.jsdelivr.net/npm/notiflix@2.7.0/dist/notiflix-aio-2.7.0.min.js"></script>
    <script src="https://staging-content-media-cdn.codefinity.com/courses/c1087363-9025-4c37-8d5e-983a32a007e9/text-boxes-section/copyable-text-box.js"></script>
  </body>
</html>

**The console** will return the **string** `Hello, Redis!`, which is **stored** under that **key**.

What happens if the specified key does not exist when using the `GET` command?

Learn how to implement and configure caching in Spring Boot applications using Redis. Explore Redis integration, Spring caching annotations, and practical strategies for managing cache and improving application performance in backend systems.

GET Command

GET Command

Example Usage

1. What does the `GET` command do in Redis?

2. What happens if the specified key does not exist when using the `GET` command?

GET Command

GET Command

Example Usage

1. What does the GET command do in Redis?

2. What happens if the specified key does not exist when using the GET command?

1. What does the `GET` command do in Redis?

2. What happens if the specified key does not exist when using the `GET` command?