HTTP vs JSON How to choose the right SMS API

HTTP vs JSON How to choose the right SMS API

JSON and XML are the two most important Communication for SMS API and most software programs adhere to one of these formats. JSON is now the most used format, having surpassed XML as the most used format over the last five years; nevertheless, is JSON superior to HTTP? JSON is the de facto standard for data interchange in the modern day. It may be found in every aspect of computer programming, from front-end development to server-side development, as well as in databases, systems, and middleware.

What is a REST API?

A REST API is called an application programming interface that complies with architectural restrictions, such as stateless communication and data that may be cached. It should not be considered a protocol or a standard. The following recommendations apply to REST API endpoints that will be called over the internet. REST APIs can be accessed through various Communication for SMS API; however, the most common protocol over which they are called is HTTPS. Because of this, REST API end points that will be called over the internet should follow these recommendations.


The Hypertext Transfer Protocol facilitates communication between two computer systems using an HTTP API. HTTP application programming interfaces (APIs) enable endpoints to function as API gateways, which enables HTTP queries to connect to a server. For instance, you use an HTTP API to plan a Zoom meeting on your Google calendar. The application programming interface (API) shows how Zoom may connect directly with Google's servers to embed a Zoom meeting into an event, eliminating the need to copy and paste the meeting invitation into a field.

Characteristics of REST-Based SMS API for your applications

Web APIs based on the REST architectural style facilitate communication between a client, an API consumer, and an Transactional SMS API server (the backend). At Capital One, the protocol that we employ for developing REST-based application programming interfaces (APIs) is HTTP. The designs are significantly reliant on HTTP, from the methods (such as GET, POST, PUT, PATCH, and DELETE) to the headers that assist in the communication between the client and the server(e.g. Authorization, Accept, Content-Type).

REST-based APIs have a specific set of characteristics

  • Request/response model — API  users must first submit a request to an API server before getting a  response.

Pull-based interaction — API users will submit a request to the Transactional SMS API whenever they need access to new data or capabilities (e.g. user interface, at a pre-scheduled time).

  • Synchronous — API users will  get a response to their request after it has been sent.
  • Multiple content types — Because REST APIs are constructed on top of HTTP, the content type of the answers may be anything from JSON to XML or even something completely different, depending on what the user requires (e.g. CSV, PDF).
  • Flexible interactions — Consumers  may interact with REST-based APIs via resources in some ways, including inquiries and searches, creating new resources, modifying existing resources, and deleting resources. These interactions are made possible by  the various HTTP verbs. We may also construct complicated application  workflows by merging these interactions into higher-level processes.

Caching and concurrency protocol support — The caching semantics built into HTTP make it possible for caching servers to be put between the consumer and the Transactional SMS API server. Additionally, HTTP enables cache management of replies and eTags for concurrency control, both of which help to prevent content from being overwritten.

  • Internal and external access —  It's possible to limit REST API access to only be used internally or only to be used externally by partners or public developers.

What's Wrong With JSON?

The JavaScript luminary Douglas Crockford was interested in describing a format that would improve data exchanges between web apps and JavaScript-based clients when he proposed the JSON format. JSON initially gained appeal among web developers as a lightweight alternative to XML, eventually reaching a broader audience due to its popularity.

JSON is a fantastic option for the exchange of data for general purposes because of a number of its capabilities. There is no required schema; a JSON document is considered legitimate as long as it is well-formed. Second, JSON supports a condensed and simple collection of datatypes, including strings, integers, booleans, objects, arrays, and null values. Third, the data is expressed using the syntax of JavaScript, which makes it not only legible by humans but also straightforward to parse. One would have difficulty locating a well-known programming language that is not equipped with at least one JSON parser.

What's Wrong With HTTP?

Web developers have benefited greatly from using HTTP version 1.1. It is easy to implement, simple to use has widespread adoption, and a large number of developers are familiar with it. However, HTTP failures, which have been a source of frustration for web developers for years, may have an even greater effect on developers working on IoT devices.

HTTP, much like JSON, tends to be on the excessively verbose side. The headers of an HTTP request are a nice example. They bloat the network protocol since they are raw text strings and do not use any compression.

Another one of HTTP's shortcomings is the amount of network utilization it requires. The original HTTP protocol was developed, assuming that network connections should only be kept open for a brief period. After establishing a connection and requesting a page, the client waits for the server to respond before closing the connection. On the other hand, a typical web page may now simultaneously retrieve more than a dozen resources. Although HTTP 1.1 added some features for keeping connections opened and reused for short periods, the primary emphasis of HTTP has always been on connections that are only utilized for a short amount of time.


Software engineers want a method through which they can define and communicate data, regardless of the sort of application or use case they are working on. Transactional SMS API are most effective for request-and-response interactions. The client application communicates with the API backend via HTTP to make a request. Message streaming is most useful for notifying you if there is new data or an event that has occurred on which you may wish to take action. Just make sure that you match the customer's requirements with one or more methods to provide a user-friendly interface to the features of your solution.