GraphQL is an open-source data query and manipulation language for APIs, and a runtime for fulfilling queries with existing data.It provides an approach to developing web APIs, and has been compared and contrasted with REST and other web service architectures. It allows clients to define the structure of the data required, and the same structure of the data is returned from the server, therefore preventing excessively large amounts of data from being returned, but this has implications for how effective web caching of query results can be. The flexibility and richness of the query language also adds complexity that may not be worthwhile for simple APIs. It consists of a type system, query language and execution semantics, static validation, and type introspection. GraphQL supports reading, writing and subscribing to changes to data (realtime updates – most commonly implemented using WebHooks). GraphQL servers are available for multiple languages, including Haskell, JavaScript, Perl, Python, Ruby, Java, C#, Scala, Go, Elixir, Erlang, PHP, R, and Clojure.

What Can We Do With GraphQL ?

  • Faster frontend development

           Iterate quickly on apps without waiting for new backend endpoints. Simplify data fetching and management                   code by getting the data in the shape you need.

  • Use your existing data

           You can use GraphQL on top of your existing infrastructure: REST, SOAP, existing databases, or anything else.                 Organize your data into a clean, unified API and query it all at once.

  • Fewer bytes and roundtrips

           Make your apps more responsive than ever before by only loading the data you’re actually using, and reduce                   the number of roundtrips to fetch all of the resources for a particular view.          

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