AWS AppSync is a fully-managed serverless GraphQL infrastructure. Because it runs on a serverless, managed infrastructure, it scales automatically and does not require any manual installation nor any maintenance. Thus, AppSync allows us to get started quickly without any impediments.
APIs and Events are the Hands and Eyes
There are two essential concepts for integration today: APIs and events. APIs allow for reading and writing data, calling functionality and starting processes. APIs connect us with actuators in the digital world that enable us to do and change things.
What is a GraphQL Pattern?
GraphQL queries consist of one or more patterns which are matched against the big graph containing all the data on the server. The patterns describe a subgraph of the big graph and is used to search for the relevant data in the
AppSync Architecture
Let’s have a look at the AppSync architecture. In the figure below we have depicted such a high-level solution architecture for an app, an AppSync API and AWS data sources. On the left-hand side we have the clients connecting to
What is a GraphQL Query?
To read data with GraphQL, the client uses the query method. In the pattern of this query, the client has to explicitly specify all the object and fields it is interested in. As a result of the query, the client
What are GraphQL Subscriptions?
Modern clients need to get near real-time updates that get triggered when something changes on the server. For example, an instant messaging app needs to get notified, when a new message arrives on the server, or a weather app needs
Thank you
Dear Readers, thanks to you, RESTful API Design, the third book in the API-University Series has made it to the top of the Amazon Bestseller List. Thank you! Thank you! Thank you! Matt
Where is the Graph in GraphQL?
A graph is a very generic data structure, so it should be possible to express the data of any application in the form of a graph. And this graph, formed by all application data, is what we call the
Events are Everywhere where there are APIs
Let me show you what I mean, when I say, events are everywhere where there are APIs: Payment API: An event notifies when the payment was processed. SMS API: An event notifies when the SMS is delivered. Email API: An event notifies when
Why are there Two Languages in GraphQL?
GraphQL provides a new philosophy for building APIs, which helps us to structure the interaction between frontend and backend. To structure the interaction, GraphQL offers two languages: a declarative, typed query language for APIs and a schema language. These two