What Are Web Services And What Technology To Use In Their Development?
1A web service is a way of intercommunication and interoperability between machines connected in Network. In the Internet world, they have become very popular, be it public or private web services. Generally, the interaction is based on the sending of requests and responses between a client and a server, which include data. The client requests information, sometimes sending data to the server so that they can process their request. The server generates a response that it sends back to the client, attaching another series of data that are part of that response. Therefore, we can understand a web service as message traffic between two machines.
First SOAP arrived
The first introduction of web services in the Internet world came from the hand of SOAP. SOAP is a protocol that defines how communications between machines should be performed. SOAP uses XML as a data exchange language with a complex structure that is capable of hosting all types of data on the request or response generated.
Then REST came
REST uses the HTTP protocol itself for communication between machines. HTTP is widely supported by all systems and in fact for the transfer of data on the web HTTP is used.
REST is characterized by having no state. That is, the server is not able to remember the state of the previous REST request that a client could or could not make. Therefore, the client has to send in each request all the status of their session, which is usually done by means of a token that "helps remind" the server.
We mention these two characteristics because it is precisely what allows the implementation of REST to be really easy and has popularized both the type of web service that is known as the REST API name.
REST has to simplify things and in that same line it is usually used a different language to represent the data, the JSON language. Today REST and JSON have become the simplest option and therefore the most recommendable to implement a web service.
XML Vs JSON
For the communication systems between machines, a series of characteristics is required, basically marked because the machines involved in the communication can have very different systems. They can use different programming languages ​​or databases and even the operating systems are usually different between clients and servers. Therefore, for the communication of the data basically languages ​​written in plain text files are used.
Among the most used languages ​​for the communication of data in web development UAE, we find XML and JSON.
- XML is based on tags, such as HTML. It is more traditional but it is also a more advanced language, which presents various utilities for its extension, validation of information and data syntax, etc.
- JSON is a newer language, based on JavaScript syntax. Generally, it is lighter and requires much better server load for processing.
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