REST API vs GraphQL vs SOAP

In web development, picking the right API technology is like picking the perfect tool for a job. Each one—REST API, GraphQL, and SOAP—has its own way of working. It’s really important for developers and businesses to know how these APIs are different because that helps them build apps that work really well and can do a lot of things.

Imagine you’re building a house: REST API, GraphQL, and SOAP are like different sets of building plans, each with its own style and approach. They’re the blueprints for how web applications communicate, defining the rules for sending and receiving information. Just like you’d choose the best blueprint for your dream house, developers choose the best API technology for their projects based on its strengths and capabilities.

What is REST API?

An API that employs HTTP requests for data access and usage is known as a RESTful API. These data types—GET, PUT, POST, and DELETE—refer to the reading, updating, creating, and deleting of resource-related actions. The code that enables two software applications to connect is called an API for a website. The API outlines how a programmer should design a program that asks an operating system or other application for services.

A RESTful API sometimes called a RESTful web service or REST API, is built on the REST protocol. In web services development, REST is a popular architectural style and communication technique.t.

What is GraphQL?

GraphQL is a bit like a special language you can use to ask a website or app for information. It’s open-source, so anyone can use it and even help improve it. When you send a question using GraphQL, the server works out what you’re after, finds the right info, and sends it back. Unlike REST, where you might need to ask for things from different spots, GraphQL lets you usually get all you need in one go. It’s like a super-efficient way to get exactly what you want from a website or app!

What is SOAP?

SOAP, or Simple Objects Access Protocol is basically a web communication protocol that was created for Microsoft in 1998. These days, the main uses for it are HTTP/HTTPS data transmission and web service exposure. However, it’s not just them. Unlike the REST pattern, SOAP only supports the XML data format and adheres strictly to predetermined standards, including a protocol for sending procedure requests and responses, a messaging structure, and a set of encoding guidelines. SOAP can handle communications and provide responses that are platform- and language-independent since it has built-in support for building web-based services.

Although REST is the preferred protocol for most online data interchange, SOAP is here to stay because to its higher level of security, high degree of standardisation, and occasional automation capabilities.

REST API vs GraphQL vs SOAP

Now that we have got the basic understanding of all the three API technology , let’s move to our comparison of REST API vs GraphQL vs SOAP. We will compare them on various different aspects.

1. Data Fetching and Data Manipulation

• REST API
  • Data Fetching: In REST APIs, getting data is like asking for things using specific methods, kind of like using a special language. These methods, like GET, are like asking a server for stuff you need. Each thing you want is in a unique spot on the server, kind of like its own address. When you want something specific, you send a request to that address using GET.
  • Data Manipulation: Standard HTTP methods such as POST, PUT, PATCH, and DELETE are traditionally used in REST APIs in order to manipulate data. The resources of server basically the content or data present in the server can be added, updated, or removed using these methods. For Example, A PUT request to /users/123 would update the user with ID 123, whereas a POST request to /users might create a new user.
• GraphQL
  • Data Fetching: Client queries sent to a single GraphQL endpoint are the basis for data fetching in GraphQL. With GraphQL, clients may specify exactly what data they require in their queries, unlike with REST, where each endpoint returns a preset data structure. Clients can retrieve exactly the data they need thanks to this flexibility, which minimises data over- and under-fetching.
  • Data Manipulation: GraphQL performs write operations, such as adding, modifying, and removing data, via mutations. Although they are used to change data on the server, mutations are comparable to queries. Mutations provide a single interface for reading and writing data because they are supplied to the same GraphQL endpoint as queries.
• SOAP
  • Data Fetching: In SOAP APIs, fetching data is like sending a well-organized letter (in the form of an XML-based SOAP message) to a server. You ask for something specific, and the server sends back a detailed reply in another SOAP message. It’s like having a clear conversation with someone who understands exactly what you need!
  • Data Manipulation: Data manipulation in SOAP APIs is also done using SOAP messages, generally with the HTTP POST method. SOAP messages basically have a very strict structure which is defined by the SOAP specification, which includes elements for specifying the action to be performed (e.g., create, update, delete) and the data to be manipulated.

2. Flexibility

• REST API: Developers can create REST APIs that precisely meet the needs of their applications thanks to their well-known flexibility. They can be created according to REST principles, such as resource-based URLs and stateless communication, and they utilise the usual HTTP methods (GET, POST, PUT, and DELETE).
• GraphQL: GraphQL also gives clients a great deal of flexibility by letting them define the response’s structure. Multiple roundtrips to the server are minimised when clients request nested and related data in a single query. Because of this versatility, clients can modify the data they receive to meet their own requirements.
• SOAP: In contrast to REST and GraphQL, SOAP APIs have a stricter structure. In certain situations, their versatility may be limited due to their rigid message structure and communication protocols. For the purpose of creating web services, SOAP does offer a thorough set of standards.

3. Performance and Efficiency

• REST API :REST APIs are very efficient for simple and resource-based operations. However, practices like over-fetching or under-fetching of particular data can be very challenging, especially in mobile or environments having low bandwidths.
• GraphQL : GraphQL performs very good in scenarios where clients need fine-grained control over the data they receive. It can reduce the amount of data transferred over the network by fetching only the required fields.
• SOAP : SOAP messages seems to be larger because of the XML format and the overhead of the SOAP envelope. This can basically impact the performance, especially in high-traffic or applications which are latency-sensitive.

4. Ecosystem

• REST API: Think of REST APIs as the friendly face in the crowd—everyone knows and loves them! They’re like the cool kids that every programming language and framework wants to hang out with. And behind them, there’s this bustling community, like a big family reunion, where everyone’s sharing tools, tips, and tricks.
• GraphQL: GraphQL is like the new kid in town, backed by big names like Facebook. It’s becoming popular fast and has a community that’s growing just as quickly. While it’s not as big as REST right now, it’s definitely making waves and could be the next big thing!
• SOAP: Enterprise developers are served by the well-established ecosystem of SOAP. In business settings where stringent standards and interoperability are crucial, it is commonly employed. While SOAP’s ecosystem may not be as dynamic as REST’s or GraphQL’s, it is reliable and well-suited for certain types of applications.

5. Error Handling and Status Codes

REST API

HTTP Status Codes: In general, REST APIs use standard HTTP status codes to show the success or failure of a particular request. These HTTP status codes are divided into various different categories, such as 2xx when responses are successful , 4xx when there are any client errors, and 5xx typically for server errors. For example:

• 200 OK: The request was successful.
• 404 Not Found: The resource that was not found.
• 500 Internal Server Error: A server error occurred unexpectedly.

GraphQL

Single HTTP Status Code: In GraphQL, when you ask for something, you usually get a “200 OK” response, even if there was a problem. Instead of using the usual HTTP status codes to show errors, GraphQL tells you about any issues in a special list it sends back. It’s like getting a friendly message that explains exactly what went wrong, so you can fix it easily!

SOAP

SOAP Faults: In SOAP APIs, when something goes wrong, then they use a special setup called a “SOAP fault” to tell you about it. It’s like getting a detailed report with all the info you reuquired—it includes a code for the type of error, a message explaining what happened, and sometimes more details. This report is neatly packed inside the SOAP envelope, so you know exactly what went wrong and how to fix it!

6. Security

• REST API: REST relies on the security features provided by the underlying transport protocol (usually HTTP). It supports various authentication mechanisms like OAuth, JWT, and basic authentication.
• GraphQL: GraphQL supports similar authentication mechanisms as REST but requires careful consideration of authorization due to its flexible nature. Implementing fine-grained access control can be more complex in GraphQL.
• SOAP: SOAP has built-in support for security features like encryption and digital signatures through WS-Security. It provides a comprehensive security model but can be more complex to implement and maintain.

Comparison Table : REST API vs GraphQL vs SOAP

Aspect	REST API	GraphQL	SOAP
Data Fetching	Using HTTP methods (GET, POST, etc.)	Query-based with a single endpoint	Message-based using XML over HTTP or other protocols
Data Manipulation	CRUD operations with standard HTTP methods	Mutations for write operations	SOAP messages for operations and data exchange
Flexibility	Flexible with resource-based endpoints	Flexible queries for data retrieval	Rigid structure with defined message formats
Versioning	Introduces new endpoints or versioning	Complex versioning due to query-based nature	Versioning of entire services
Tooling and Ecosystem	Mature ecosystem with diverse tools and libraries	Growing ecosystem with focus on GraphQL-specific tools	Mature ecosystem with strong enterprise support
Performance and Efficiency	Efficient for resource-based operations	Efficient for querying complex data structures	Efficient for structured data exchange
Error Handling	Standard HTTP status codes for errors	Custom error objects within responses	SOAP-specific error codes and fault messages
Security	Relies on underlying HTTP security mechanisms	Supports various authentication mechanisms	Built-in support for encryption and digital signatures
Adoption and Popularity	Widely adopted with a large developer community	Growing in popularity with active community	Established in enterprise environments

Conclusion

In Conclusion, REST API is very trusted choice among developers as it offers many different tools. GraphQL is getting popular because it’s flexible and has many new tools. SOAP is strict but good for big companies. Think about what your project needs most when picking one.