December 2019
Intermediate to advanced
474 pages
10h 3m
English
Content preview from React Projects
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Setting up Apollo Client for GraphQL subscriptions
To use subscriptions in your React Native application, there are more packages you need to add to the project that, for example, make it possible to add the WebSocket. These packages are as follows:
npm install apollo-link-ws subscriptions-transport-ws apollo-utilities
The apollo-link-ws package helps you create a link to the GraphQL server running the subscription, like apollo-link-http does for queries and mutations. subscriptions-transport-ws is a package that is needed to run apollo-link-ws, while apollo-utilities is added to use a method that is available on those packages so that you can separate requests regarding subscriptions from requests for queries or mutations.
After installing ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.