Monthly Archives: February 2023

Client Side Rendering

Client Side Rendering


Client-side rendering (CSR) is a popular method for developing modern web applications. It makes the user experience more dynamic, smoother, faster, and interactive. This approach to web application development offers numerous advantages, including increased flexibility, performance, and scalability.

CSR, in particular, has become a popular method for developing single-page applications, emphasizing the distinction between websites and web applications.

What is Client Side Rendering?

Client-side rendering is a process in which web page content is generated and updated dynamically within the user’s browser using JavaScript rather than the standard method in which everything happens on the server. The server only renders the basic HTML code of the web page, while the parts required to display the content, such as complete logic, templates, routing, and data fetching, are rendered using JavaScript within the browser, which is the client. That is why this approach is known as CSR.

The application uses JavaScript to retrieve data and render UI components in this approach to developing a web application. While the user is using the application, the application sends data update requests to the server, which responds with updated data. Only then does the application render the UI, displaying the updated data.

Client Side Rendering – Pros and Cons

Each method for developing modern web applications has advantages and disadvantages.

Scalability is critical for most modern web applications today, and CSR’s approach provides exactly that. Because the server’s role in this approach is more about providing data rather than rendering, the CSR approach allows for greater scalability. Scalability is typically defined as a web application’s ability to handle an increasing number of customers, clients, or users while remaining responsive to all users.

CSR enables a fast and responsive web application. The first page to load may be a little slower, but each subsequent page is fast and responsive. This occurs because, after the first page load, the application does not need to send a request to the server to load it again, but instead only needs to pull data and update the UI with new data.

CSR enables a much more interactive web application for the user. Users can interact with the web application in real time because the rendering will be done on the client side and there will be no need to wait for a response from the server to update the UI. This approach is appropriate for more complex, frequently updated web applications. Chat applications and social networks are two examples of such web applications.

Because of the aforementioned advantages, CSR has grown in popularity as a tool for developing single-page applications.

The first issue that arises when discussing the shortcomings of the CSR approach is the issue of browser compatibility. Because the majority of the work is done on the client side and is dependent on the browser used by the client, rendering can be more sensitive. JavaScript code may behave differently depending on the browser and version.

Although the CSR approach allows for fast web applications, the initial loading of the page can be quite slow. Before rendering the UI, the user’s browser must first download and execute the JavaScript code, which can take some time.

Without Search Engine Optimization (SEO), it is difficult to mention any website or web application. Because the content changes frequently, SEO is extremely difficult for a CSR approach. As a result, the CSR approach makes it difficult for search engines to index dynamic JavaScript content.

When to use Client Side Rendering?

The benefits and drawbacks of CSR listed above may help answer this question. It all depends on the type of web application required by the client.

If it is necessary to develop a real-time data application. In such a case, the CSR approach is an excellent choice. The benefit is that the user interface is updated in real-time, eliminating the need to refresh the entire page. It is also a practical approach when the web application contains a lot of dynamic data.

CSR is the best approach for the previously mentioned single-page applications (SPAs). SPAs are web applications that load a single HTML page and dynamically change its content based on user interaction. CSR is the preferred option for SPAs because the entire process takes place on the client side.

CSR can provide a smooth user experience when a web application requires a lot of user interaction and has an interactive, demanding UI. A web application with drag-and-drop functionality is an example of an application with a demanding UI interface. In this situation, the CSR approach is ideal because it can completely meet such requirements.

The CSR approach is appropriate when the web application is expected to enter data rather than simply read content, as is typically the case with websites.

When the emphasis is on rich web applications with a large user base.

Best practices for Client Side Rendering

If best practices are not followed, the CSR approach will have little impact.

The first thing to consider when implementing CSR is the application performance and optimization. Techniques such as lazy loading and caching are commonly used to improve the performance of a web application.

Because JavaScript code can behave differently in different browsers, it is best to test the web application in multiple browsers to ensure compatibility and consistency in different environments.

Front-end frameworks such as Angular, React, and Vue are ideal for implementing the CSR approach. Aside from traditional implementation, these frameworks aid in the organization, management, and optimization of web application performance. Other front-end frameworks exist, but the three mentioned above are widely regarded as the best and most popular when it comes to the CSR approach.

In some cases, focusing solely on the benefits of the CSR approach will not suffice to complete the web application, it will also be necessary to address the disadvantages of this approach. If SEO is still a priority for a web application with a CSR approach, which is common, consider using server-side rendering (SSR) for the initial loading of the page in conjunction with the CSR approach for other user interactions. In this way, SEO for a web application that primarily uses a CSR approach, such as a single-page application, can be improved.


Client-side rendering is a popular approach for developing web applications that provide numerous benefits and enhances the user experience. Furthermore, numerous disadvantages to this approach cannot be overlooked. Regardless, this approach has found a home in the development of modern web applications and is here to stay. All flaws are potential problems, and all problems have solutions, and developers can achieve a smooth and efficient user experience in their web applications by following best practices.

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What is an API?

What is an API?


API is a term that is frequently used and very important in software development. API stands for Application Programming Interface, but this name is often confusing and insufficient to understand what API is.

In this post, we will highlight all of the key API items to make this term clear to all parties who are interested.

What is an API?

Communication and data exchange are the foundations of everything. Systems have always needed to communicate with one another, but previously the percentage of system compatibility was very low. The communication between the systems was complicated because the most frequent changes in one system necessitated changes in the other systems due to their lack of compatibility. It was difficult to update and improve these systems due to these constraints.

API is designed to solve this problem by providing a means for software systems to communicate and exchange data. The API allows software systems to interact with one another more flexibly, making it easier to update and improve specific systems without affecting others.

The API provides a standardized method of communication and data exchange, which eliminates the problem of software system compatibility. This method allows for scalable software development while also encouraging innovation and integration with existing systems.

API components

An API is a collection of protocols, rules, and tools used to create software applications. As previously stated, an API enables different software systems to communicate and exchange data.

An API defines how software components will interact and be linked together, providing a set of agreed-upon rules for data exchange between software systems.

The API can be divided into several key components:

  • Endpoints
  • Methods
  • Request and Response
  • Data Format
  • Authentication and Authorization
  • Error Handling


The location of the API is technically referred to as an endpoint. It is a URL that points to the API server’s address.


Methods are actions that can be carried out using the API. GET, POST, PUT, DELETE, and other methods are the most commonly used.

Request and Response

The API employs a traditional client-server architecture, in which an API client sends a request to an API server, which receives the request, processes it, and returns a response to the client. The server’s response can be data that the client requested or a message that indicates whether or not the request was successful.

Data Format

APIs typically employ standardized data formats, such as JSON or XML. Data formats are used to encode data sent between the client and the server.

Authentication and Authorization

Data access via API typically necessitates authentication and authorization. This is typically accomplished by utilizing a key or token provided as part of the API request.

Error Handling

Because error handling is critical when developing software applications, APIs include error-handling mechanisms that allow the developer to control errors and exceptions that may occur during the request and response process.

Different types of APIs

APIs can be divided into several types based on their architecture and purpose.

There are several API types:

  • Open API
  • Internal API
  • Partner API
  • Composite API

Open API

This type of API, as the name implies, is available for use by developers and users with few restrictions. This type of API is also known as an external or public API. Typically, registration, app identification, or an API key are required for use.

Internal API

The internal API, in contrast to the external API, is hidden within the organization and can only be accessed by internal systems. Because of this approach, it is frequently referred to as a private API.

Partner API

This type of API is intended for partner companies to exchange specific functionalities. This type of API is only available to external developers to improve business-to-business (B2B) partnerships.

Composite API

By combining two or more different APIs into a single API, composite APIs are used to solve problems of complex system requirements and behavior.

How do APIs work?

APIs can work in a variety of ways, depending on the system’s implementation and requirements.

APIs are commonly used in the following ways:

  • GraphQL API
  • WebSocket API
  • Streaming API


The most popular and versatile web API that follows a stateless client-server architecture is a Representational State Transfer (REST) API. To manipulate data, it employs the Hypertext Transfer Protocol (HTTP) with the GET, POST, PUT, and DELETE methods. REST is a popular architectural style for developing web services that are widely used in modern web development.


Simple Object Access Protocol (SOAP) is a standard protocol for exchanging data in the implementation of web services. SOAP APIs encode messages between the client and the server using XML. Messages can be sent using a variety of lower-level protocols, including HTTP and SMTP. SOAP APIs are less flexible, which is why they were once more popular.


GraphQL is a Facebook-developed open-source data query and manipulation language for APIs. It is a more efficient, powerful, and adaptable REST alternative. Its advantage is that it allows clients to request only the information they require.


Remote Procedure Call (RPC) APIs allow systems to communicate as if they were calling local procedures, but the procedure call is executed on the remote system. So the client executes a function, or procedure, on the server, and the server returns the output to the client. When a client wants to run a remote procedure on a server, this method is used.

WebSocket API

The WebSocket API is a modern web API that sends data via JSON objects. It allows two-way communication between client and server applications. WebSocket API is more efficient than REST API because the server can send callback messages to connected clients.

Streaming API

A Streaming API provides instant access to data, such as stock prices or social media updates, as soon as it is available. Streaming APIs can be used to create real-time applications such as chat apps and news feeds.


We stated at the outset of the introduction that API is a commonly used and important term. APIs are critical tools for developing modern software systems. APIs were instrumental in connecting disparate software systems and enabling them to communicate with one another.

APIs provide developers with the ability to access and use the functionality of other systems and services. This approach enables developers to integrate multiple software applications and create novel solutions. APIs can be implemented in a variety of ways and are available in a variety of formats and protocols based on the needs of a particular use case.

They can be used for a variety of purposes, including data retrieval, system integration, and the development of new applications and services. APIs will continue to play an important role in the software development industry as demand for integration and automation grows, allowing developers to create innovative solutions and drive digital transformation.

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