Hana Juali

Hana Juali

1593330447

Hello World for Apollo GraphQL

G

raphQL is an API service interface that’s getting more and more popular. The official GraphQL page provides an excellent tutorial, starting with a very simple Hello World Example.There’s a popular library named Apollo that wraps around GraphQL with better interfaces to provide a full-stack solution. However, it’s tutorial started with a relatively complicated example.Hence I’m blogging here to provide the simple Hello World Example on Apollo, to gap the basics of GraphQL and Apollo.

Hello World Service

This is based on the tutorial here, except that it is using Apollo-Server instead of Express and GraphQL library directly.Install Apollo-Server library, using the below command in a folder.

yarn add apollo-server
  • Create a file name index.js in the folder.Get the needed functions from the apollo-server
const { ApolloServer, gql } = require('apollo-server');
  • Define the first Query type of hello: String in gql from the Apollo-Server library.
const typeDefs = gql`
    type Query {
        hello: String
    }
`;
  • Define the resolver (or the root as per in GraphQL Tutorial) to resolve the query given
const resolvers = {
    Query: {
        hello: () => {
            return 'Hello World!';
        }
    }
};
  • Lastly, instantiate the ApolloServer and you’ll start the service.
const server = new ApolloServer({typeDefs, resolvers})

server.listen(4000).then(({ url }) => {
    console.log(`🚀 Server ready at ${url}`);
});

The entire code as below

const { ApolloServer, gql } = require('apollo-server');

const typeDefs = gql`
    type Query {
        hello: String
    }
`;
const resolvers = {
    Query: {
        hello: () => {
            return 'Hello World!';
        }
    }
};
const server = new ApolloServer({typeDefs, resolvers})
server.listen(4000).then(({ url }) => {
    console.log(`🚀 Server ready at ${url}`);
});

You just start it using

node index.js

You can now look at the browser as below.

#nodejs #web-development #graphql-apollo-server #graphql

What is GEEK

Buddha Community

Hello World for Apollo GraphQL

Android Hello World Program - Create Your First App in Android Studio

Android Hello World example in Android Studio – In this tutorial, we’ll show you how to start android development with the very first android project.

As a beginner first of all you must develop the hello world application like we do while learning a new language. This project doesn’t involve any business logic rather it ensures whether our development, as well as the deployment environment, is working. This is indeed a very simple android project and you do not really need to do a lot of coding here.

#android tutorials #android hello world #android project #android studio hello world #first android app #hello world program in android

Hana Juali

Hana Juali

1593330447

Hello World for Apollo GraphQL

G

raphQL is an API service interface that’s getting more and more popular. The official GraphQL page provides an excellent tutorial, starting with a very simple Hello World Example.There’s a popular library named Apollo that wraps around GraphQL with better interfaces to provide a full-stack solution. However, it’s tutorial started with a relatively complicated example.Hence I’m blogging here to provide the simple Hello World Example on Apollo, to gap the basics of GraphQL and Apollo.

Hello World Service

This is based on the tutorial here, except that it is using Apollo-Server instead of Express and GraphQL library directly.Install Apollo-Server library, using the below command in a folder.

yarn add apollo-server
  • Create a file name index.js in the folder.Get the needed functions from the apollo-server
const { ApolloServer, gql } = require('apollo-server');
  • Define the first Query type of hello: String in gql from the Apollo-Server library.
const typeDefs = gql`
    type Query {
        hello: String
    }
`;
  • Define the resolver (or the root as per in GraphQL Tutorial) to resolve the query given
const resolvers = {
    Query: {
        hello: () => {
            return 'Hello World!';
        }
    }
};
  • Lastly, instantiate the ApolloServer and you’ll start the service.
const server = new ApolloServer({typeDefs, resolvers})

server.listen(4000).then(({ url }) => {
    console.log(`🚀 Server ready at ${url}`);
});

The entire code as below

const { ApolloServer, gql } = require('apollo-server');

const typeDefs = gql`
    type Query {
        hello: String
    }
`;
const resolvers = {
    Query: {
        hello: () => {
            return 'Hello World!';
        }
    }
};
const server = new ApolloServer({typeDefs, resolvers})
server.listen(4000).then(({ url }) => {
    console.log(`🚀 Server ready at ${url}`);
});

You just start it using

node index.js

You can now look at the browser as below.

#nodejs #web-development #graphql-apollo-server #graphql

Eleo Nona

Eleo Nona

1600219097

How to Build Apollo GraphQL Server From Scratch

What is GraphQL

GraphQL is a query language and a server-side runtime that is used to request data from the server. The first thing that comes to mind when hearing the term “query language” is SQL. Just as SQL is used for querying databases, GraphQL is a bit like SQL but for querying web APIs as it eliminates the need to repeatedly develop or change existing end-points. GraphQL also enables the client/front-end to retrieve exactly the data they have requested and no more. This means that, within a single request of GraphQL, you can traverse from the entry point to the related data (whereas in RESTful API you have to call multiple endpoints to fetch similar results).

The following example will help you to understand this better. Let us consider an object person which has the attributes name, age, email, and contactNumber. Suppose the front-end only needs the name and age of the person. If we design a REST API, the endpoint will look like api/persons, which will end up fetching all the fields for the person object. The issue arises here because there is no easy way to communicate that I am interested in some fields and not others (which causes REST API to over fetch the data).

#graphql #nodejs #apollo-server #graphql-apollo-server

Delbert  Ferry

Delbert Ferry

1622282384

How We Built GraphQL Subscriptions with Apollo

A real-world example
At Scaphold, we manage a lot of infrastructure to make sure our customers’ APIs stay available and performant. One of our core features is a graphical schema designer that allows you to easily define the GraphQL schema that will come to define your Scaphold API. What you don’t see when playing around with our schema designer, however, is a complex migration system that makes sure your API’s database is always up to date and in adherence with your schema. When you make a migration to your schema, the machine that fields the migration request will make the necessary changes to your database so that your API stays in sync.

#graphql #graphql subscriptions #apollo

Delbert  Ferry

Delbert Ferry

1622276694

Apollo interns on GraphQL Radio

Shadaj Laddad
Shadaj is a senior at Lynbrook High School, and has been programming for a long time. He’s been historically interested in Scala, but was working mostly in JavaScript during his internship. Here’s what he worked on:

  • Subscriptions tutorial: Shadaj continued the Full-stack GraphQL tutorial with two steps about subscriptions: [Server-side] and [client-side].
  • Apollo Cache API: He refactored Apollo Client internals to separate out the internal GraphQL cache implementation behind a clean API. In Apollo Client 2.0, the cache will be completely pluggable, so that people can integrate caches based on different technologies like MobX, and build new features like offline support.

#graphql #graphql radio #apollo