Top 7 Best Practices To Implement API Development

API stands for application programming interface, and it’s how developers interact with data. A developer’s life can be made easy and comfortable with a properly designed API. The conventions of API design must be followed precisely to give the best results to clients. Thus, an API can be defined as guidelines that govern how apps and devices interact and communicate. The show’s leaders are tech behemoths like Netflix, Facebook, GitHub, etc., which are eagerly hiring developers to make use of their data via APIs.

API helps developers by enabling them to communicate better. API should be refined and cultivated efficiently; otherwise, it can cause problems for developers instead of improving users’ experience. Therefore, API’s most exemplary execution must have been fixed to provide the most efficient service to your users.

Features of API

API is a programming interface for web applications. Before we get into the best implementation practices for API design, let’s go over some of the API’s key characteristics:

  • As API is easy to read, developers can work with it quickly and comfortably. While dealing with it regularly, they can recollect its related functionality and resources.
  • If your API is executed and integrated with a precise and clear design, you can reduce the chances of writing the wrong code. Furthermore, it provides critical feedback without imposing any strict instructions.
  • An extensive API allows developers to build prospective apps in response to the data risk you’ve identified. Consequently, API developers do not rush to finish the entire application at once.

Advantages of API

The main advantages of API are:

  • Great flexibility
  • Easy to understand
  • Ease of handling multiple calls
  • Use standard HTTP procedure call

Seven Best Practices To Implement API Development

You must abide by some of the best API development practices if you want to give uncomplicated, accurate, and error-free results to your API user. Below are some tried-and-true techniques for designing and developing APIs:

Comprehensive Documentation:

Comprehensive and easy-to-understand documentation is the need of the hour. Documents are generated automatically based on the API definition. Make sure that the documentation is simple enough so that even inexperienced persons or persons with a bit of experience should understand it. Users will find it easier to use your API if you provide detailed documentation. You’ll need detailed documentation to help users understand:

  • Security
  • Authentication
  • Error handling

Use of JSON (Data Format):

The data can be sent in the below-mentioned formats, which are:

  • CSV
  • XML
  • HTML
  • RSS

But the most extensively used data format is JSON. Humans can read JSON syntax to make data easier to understand. It’s simple to use and allows for quick data analysis and execution. Also, it offers the best compatibility with the browser.

Using API Versioning:

Developers can make changes to specific activities or the data structure using this method. If your ongoing tasks grow in size and complexity, you may need to deal with multiple API versions. This has the advantage of letting developers make more improvements and modifications to their service while also retaining a few users who are slow to accept new changes.

Handling Errors:

Errors should be handled carefully to avoid confusion. This returns the HTTP response codes, which describe the nature of the error. The API maintainers get enough information to figure out what’s causing the problem and what’s causing it.  You can learn more about software testing by enrolling in this free software testing course.

Leave them unmanaged if you want to keep your system error-free. As a result, the API customer must deal with errors. Some common HTTP status codes for errors are as follows:

  • 404 Not Found
  • 403 Forbidden
  • 401 Unauthorized
  • 400 Bad Requests
  • 503 Service Unavailable 502 Bad Gateway
  • 500 Internal Server Error

Amplification of API Security:

Another good practice for creating APIs is to use existing security frameworks such as TLS and SSL. SSL certificates maintain a private and public key pair that can be used to establish a secure connection. Without this encrypted connection, you can’t be sure you’re correctly safeguarding sensitive data like financial or medical information.

TLS is the most recent version of SSL, with enhanced security and protection. One of the most critical API security practices is regular testing. You can use these two tests to help you:

  • Penetration Testing
  • Fuzz Testing

Finally, rate limiting can easily prevent DoS (Denial of Service) attacks, in which excessive requests harm an API’s basic functionality. For a limited time, limiting the number of requests per user can protect your API from such attacks.

Filtering Options and Optimization:

Large databases are difficult to manage. One of the most challenging aspects of ensuring a secure API connection is retrieving only the data that was requested without displaying the entire database. You’ll need to use a filter for this so it can only return data that matches the request.

It also saves a lot of bandwidth on the client side. Data filters become increasingly important as your database grows. The API has a number of filtering options:

  • Filtering
  • Sorting
  • Field Selection
  • Paging

APIs, as previously stated, must be simple to comprehend and use. Apart from JSON, there are a few other things you can do to make APIs easier to use and understand:

  • Use no abbreviated naming systems that are clear and easy to understand.
  • In HTTP methods, use nouns rather than verbs.
  • For error management, use simple and easy-to-understand descriptions, as well as standardized error codes.
  • Use plural nouns for collections in accordance with accepted conventions.

Rather than repeatedly requesting data, use caching. The advantage of caching is that data is delivered more quickly to users. Users may, however, receive outdated information. Furthermore, we constantly see obsolete data, which may cause issues when fixing in production environments if something goes wrong.

Efficient Nesting:

Resource nesting aids in pairing two functions that have a similar hierarchy or are linked to one another. For example, in an online store, ‘orders’ and ‘users’ are resources that belong in the same category. Nesting is a helpful technique for matching resources that are relevant to each other. Many developers, however, overuse it, which reduces its appeal.

Furthermore, it generates complex dependencies that a novice developer or user will struggle to comprehend. As a result, one of the best practices for API development is to use your resource nesting efficiently. A software developer course will help teach the right way to use resource nesting and other ideal practices for API development.

HTTP methods that restore the precise resource representation are among the safest options. The HEAD, GET, OPTIONS, and TRACE strategies are thought to be risk-free. This means they can usually retrieve data without changing the state of a resource on the server. Usually, these methods can be executed, but when the HTTP specification is broken, problems arise. As a result, use HTTP methods that correspond to the action you want to perform.


The aforementioned best practices can assist you in achieving your REST API development goals while also ensuring that your solution is simple to use and secure. These practices, however, can be challenging to achieve at times. You can create successful APIs with little or no coding knowledge if you use an API management platform.