docs: Content SEO updates (#2990)

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callback/README.md

@@ -1,25 +1,27 @@
 ---
-title: Callback
+title: "Callback Pattern in Java: Mastering Asynchronous Communication"
+shortTitle: Callback
+description: "Learn about the Java Callback Design Pattern, including its intent, usage scenarios, benefits, trade-offs, and real-world examples. Understand how to implement and effectively use callbacks in your Java applications."
 category: Functional
 language: en
 tag:
-    - Asynchronous
-    - Decoupling
-    - Idiom
-    - Reactive
+  - Asynchronous
+  - Decoupling
+  - Idiom
+  - Reactive
 ---
 
-## Intent
-
-Callback is a piece of executable code that is passed as an argument to other code, which is expected to call back (execute) the argument at some convenient time.
-
 ## Also known as
 
 * Call-After
 * Event-Subscription
 * Listener
 
-## Explanation
+## Intent of Callback Design Pattern
+
+The Java Callback Design Pattern is a piece of executable code passed as an argument to other code, which is expected to call back (execute) the argument at a convenient time.
+
+## Detailed Explanation of Callback Pattern with Real-World Examples
 
 Real-world example
 
@@ -35,7 +37,7 @@ Wikipedia says
 
 > In computer programming, a callback, also known as a "call-after" function, is any executable code that is passed as an argument to other code; that other code is expected to call back (execute) the argument at a given time.
 
-**Programmatic Example**
+## Programmatic Example of Callback Pattern in Java
 
 We need to be notified after the executing task has finished. We pass a callback method for the executor and wait for it to call back on us.
 
@@ -87,7 +89,7 @@ Program output:
 17:12:11.682 [main] INFO com.iluwatar.callback.App -- I'm done now.
 ```
 
-## Applicability
+## When to Use the Callback Pattern in Java
 
 Use the Callback pattern when
 
@@ -95,14 +97,14 @@ Use the Callback pattern when
 * Implementing notification mechanisms where certain events need to trigger actions in other components.
 * Decoupling modules or components that need to interact without having a direct dependency on each other
 
-## Known uses
+## Real-World Applications of Callback Pattern in Java
 
 * GUI frameworks often use callbacks for event handling, such as user interactions (clicks, key presses)
 * Node.js heavily relies on callbacks for non-blocking I/O operations
 * Frameworks that deal with asynchronous operations, like Promises in JavaScript, use callbacks to handle the resolution or rejection of asynchronous tasks
 * [CyclicBarrier](http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/CyclicBarrier.html#CyclicBarrier%28int,%20java.lang.Runnable%29) constructor can accept a callback that will be triggered every time a barrier is tripped.
 
-## Consequences
+## Benefits and Trade-offs of Callback Pattern
 
 Benefits:
 
@@ -116,13 +118,13 @@ Trade-offs:
 * Inversion of control can lead to harder-to-follow code flow, making debugging more challenging
 * Potential issues with error handling, especially in languages or environments where exceptions are used, as errors might need to be propagated through callbacks
 
-## Related patterns
+## Related Java Design Patterns
 
 * [Command](https://java-design-patterns.com/patterns/command/): Callbacks can be implemented as Command objects in scenarios where more flexibility or statefulness is required in the callback operation
 * [Observer](https://java-design-patterns.com/patterns/observer/): Callbacks can be seen as a more dynamic and lightweight form of the Observer pattern, with the ability to subscribe and unsubscribe callback functions dynamically
 * [Promise](https://java-design-patterns.com/patterns/promise/): In some languages or frameworks, Promises or Futures can be used to handle asynchronous operations more cleanly, often using callbacks for success or failure cases
 
-## Credits
+## References and Credits
 
 * [Design Patterns: Elements of Reusable Object-Oriented Software](https://amzn.to/3w0pvKI)
 * [Effective Java](https://amzn.to/4cGk2Jz)