Asynchronous Method Call

Definition of Asynchronous Method Call

Asynchronous Method Call refers to a programming technique where a task or function is executed concurrently, without waiting for the completion of previous tasks. This enables the efficient handling of multiple operations simultaneously without blocking the main thread or the application’s flow. As a result, it improves the overall responsiveness and performance of a system.


Asynchronous Method Call: /əˌsɪŋkrəˈnəs ˈmɛθəd kɔl/

Key Takeaways

  1. Asynchronous Method Calls allow multiple tasks to run concurrently, improving overall performance by not waiting for a method to complete before starting another one.
  2. With Asynchronous Method Calls, the program is non-blocking, enabling it to remain responsive during lengthy operations, providing a better user experience.
  3. Error handling is essential in Asynchronous Method Calls to ensure proper functioning. Callbacks, Promises, and Async/Await are techniques employed to handle errors and improve code readability.

Importance of Asynchronous Method Call

The term Asynchronous Method Call is important because it refers to a programming technique that improves the efficiency and responsiveness of software systems.

By allowing tasks to run concurrently and independent of one another, this method enables programs to multitask and utilize available resources more effectively.

As a result, the waiting time for certain operations to complete is reduced, and the user experience is significantly enhanced.

Overall, asynchronous method calls are vital in managing complex operations, particularly in today’s technology-driven world where web services, APIs, and other time-consuming processes play a significant role in software development and user interactions.


Asynchronous method calls play a crucial role in enhancing the overall performance and responsiveness in software applications, particularly those that require simultaneous execution of multiple tasks. They are particularly useful in applications with elements such as network communications, file input/output (I/O), database processing, and user interface interactions, which can encounter time-consuming processes. Asynchronous methods are specifically designed to operate independently, allowing the main program to continue executing other tasks without waiting for a response from these time-intensive processes.

This non-blocking approach ensures an optimal user experience, as it eliminates the possibility of unresponsive applications or inconvenient processing delays, seamlessly delivering smooth-functioning performance. Apart from enhancing responsiveness, asynchronous method calls also help in better utilization of available resources. Since they facilitate the completion of multiple tasks through a single program thread, they reduce the need to create additional threads for individual tasks.

As a result, the limited resources, such as CPU time and memory usage, can be effectively managed, leading to increased overall efficiency. Furthermore, asynchronous methods also lead to easier development and debugging of parallel execution since they simplify the complex concepts related to multi-threading. In summary, asynchronous method calls offer numerous advantages that assist developers in creating agile, expandable, and effective software solutions that cater to diverse multitasking requirements while delivering an exceptional user experience.

Examples of Asynchronous Method Call

AJAX (Asynchronous JavaScript and XML): AJAX is a popular web development technique that allows web applications to make asynchronous requests to a server for data retrieval without the need to refresh the entire page. This enables a smoother and more responsive user experience. For example, when using Google Maps, as you navigate through the map, the application requests new map tiles asynchronously in the background while you continue to explore the area.

Online Chat Applications: Many online chat applications, such as Slack or Facebook Messenger, rely on asynchronous method calls to send and receive messages. When a user types a message and hits “send,” the chat application transmits the message to the server asynchronously. The server processes the message, stores it (if necessary), and sends it to the recipient, who receives the message in real-time without needing to refresh their screen.

E-commerce websites: E-commerce websites like Amazon often use asynchronous method calls to improve the user experience. For example, as you type in the search bar, the website may send asynchronous calls to the server to fetch a list of matching products or suggestions based on the input, updating suggestions without requiring the user to press “enter” or refresh the page. Additionally, adding items to the shopping cart or providing real-time shipping and pricing estimates are often achieved using asynchronous methods, ensuring a smooth shopping experience for customers.

FAQ: Asynchronous Method Call

What is an asynchronous method call?

An asynchronous method call is a programming technique wherein the execution of a method runs independently from the main application or process flow, allowing the program to continue running while the method performs its tasks. This helps improve efficiency, especially in tasks that may take a long time to complete or require waiting for external resources.

How does an asynchronous method call differ from a synchronous method call?

In a synchronous method call, the calling function or thread waits for the called method to complete its execution before resuming its own execution. This means that the program’s flow is halted until the called method returns a value or completes its task. In contrast, an asynchronous method call allows the main program flow to continue while the called method executes, improving efficiency and resource usage.

What are some common use cases for asynchronous method calls?

Asynchronous method calls are useful in situations where tasks are time-consuming or depend on external resources, like downloading files from the internet, reading data from a database, or processing large amounts of data. By using asynchronous calls, developers can maintain a responsive user interface or avoid blocking the main execution thread, leading to a better user experience and more efficient application.

How do I create an asynchronous method call in a programming language?

Creating an asynchronous method call depends on the programming language being used. In many modern languages like JavaScript, Python, or C#, developers can use built-in asynchronous and await keywords, or leverage libraries and frameworks that provide asynchronous methods and tools. It is essential to understand the specifics of your chosen programming language and its best practices for implementing asynchronous calls effectively.

What are some potential drawbacks or challenges in using asynchronous method calls?

While asynchronous method calls offer several benefits, they can also introduce complexity when managing application state, handling errors, or coordinating multiple asynchronous tasks. Developers need to be mindful of potential race conditions, callback hell, and error handling to maintain maintainable and stable applications when implementing asynchronous methods.

Related Technology Terms

  • Non-blocking function
  • Callback function
  • Promise
  • Concurrent execution
  • Event loop

Sources for More Information


About The Authors

The DevX Technology Glossary is reviewed by technology experts and writers from our community. Terms and definitions continue to go under updates to stay relevant and up-to-date. These experts help us maintain the almost 10,000+ technology terms on DevX. Our reviewers have a strong technical background in software development, engineering, and startup businesses. They are experts with real-world experience working in the tech industry and academia.

See our full expert review panel.

These experts include:


About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

More Technology Terms

Technology Glossary

Table of Contents