Gerard Klijs's guest appearances

Gerard Klijs

Streaming Audio: Apache Kafka® & Real-Time Data

Headless { Creator Podcast }

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What is GraphQL? And how can you combine GraphQL with Apache Kafka® to query data in real time?With over 10 years of experience as a backend engineer, Gerard Klijs is a Confluent Community Catalyst, a contributor to several GraphQL libraries, and also a creator and maintainer of a Rust library to use Confluent Schema Registry with Java client. In this episode, he explains why you want to use Kafka with GraphQL and how they work together to bridge the gap between backend and frontend to make data more easily accessible in the frontend.  As an alternative to REST, GraphQL is an open source programming language developed by Meta, which lets you pull data from multiple data sources via a single API call. GraphQL lets you migrate and deprecate data easily. For example, if you have a `name` field, which you later decided to replace by `firstName` and `lastName`, you can group the field names together and monitor the server for query requests. If there are no additional query requests for the deprecated field, then it can be removed from the server.Usually, GraphQL is used in the frontend with a server implemented in Node.js, while Kafka is often used as an integration layer between backend components. When it comes to connecting Kafka with GraphQL, the use cases might not seem as vast at first glance, but Gerard thinks that it is due to unfamiliarity and misconceptions on how the two can work together. For example, some may think Kafka is merely a message bus and GraphQL is for graph databases.Gerard also talks about the backend for frontend (BFF) pattern as well as tips on working with GraphQL. EPISODE LINKSGetting Started with GraphQL and Apache KafkaKafka and GraphQL: Misconceptions and ConnectionsGerard Klijs GithubWatch the video version of this podcastKris Jenkins TwitterStreaming Audio Playlist Join the Confluent CommunityLearn more with Kafka tutorials, resources, and guides at Confluent DeveloperLive demo: Intro to Event-Driven Microservices with ConfluentUse PODCAST100 to get an additional $100 of free Confluent Cloud usage (details)  

What is GraphQL? And how can you combine GraphQL with Apache Kafka® to query data in real time?With over 10 years of experience as a backend engineer, Gerard Klijs is a Confluent Community Catalyst, a contributor to several GraphQL libraries, and also a creator and maintainer of a Rust library to use Confluent Schema Registry with Java client. In this episode, he explains why you want to use Kafka with GraphQL and how they work together to bridge the gap between backend and frontend to make data more easily accessible in the frontend.  As an alternative to REST, GraphQL is an open source programming language developed by Meta, which lets you pull data from multiple data sources via a single API call. GraphQL lets you migrate and deprecate data easily. For example, if you have a `name` field, which you later decided to replace by `firstName` and `lastName`, you can group the field names together and monitor the server for query requests. If there are no additional query requests for the deprecated field, then it can be removed from the server.Usually, GraphQL is used in the frontend with a server implemented in Node.js, while Kafka is often used as an integration layer between backend components. When it comes to connecting Kafka with GraphQL, the use cases might not seem as vast at first glance, but Gerard thinks that it is due to unfamiliarity and misconceptions on how the two can work together. For example, some may think Kafka is merely a message bus and GraphQL is for graph databases.Gerard also talks about the backend for frontend (BFF) pattern as well as tips on working with GraphQL. EPISODE LINKS<ul><li><a href="https://www.confluent.io/blog/intro-to-graphql-an-api-for-kafka-data/" rel="nofollow" target="_blank">Getting Started with GraphQL and Apache Kafka</a></li><li><a href="https://www.confluent.io/events/kafka-summit-apac-2021/kafka-and-graphql-misconceptions-and-connections/" rel="nofollow" target="_blank">Kafka and GraphQL: Misconceptions and Connections</a></li><li><a href="https://github.com/gklijs" rel="nofollow" target="_blank">Gerard Klijs Github</a></li><li><a href="https://youtu.be/jx_PfJfhKO0" rel="nofollow" target="_blank">Watch the video version of this podcast</a></li><li><a href="https://twitter.com/krisajenkins" rel="nofollow" target="_blank">Kris Jenkins Twitter</a></li><li><a href="https://www.youtube.com/playlist?list=PLa7VYi0yPIH1B0i7mhzVi78TIkKSd-0vE" rel="nofollow" target="_blank">Streaming Audio Playlist </a></li><li><a href="https://www.confluent.io/community/ask-the-community/" rel="nofollow" target="_blank">Join the Confluent Community</a></li><li><a href="https://developer.confluent.io/" rel="nofollow" target="_blank">Learn more with Kafka tutorials, resources, and guides at Confluent Developer</a></li><li><a href="https://www.confluent.io/resources/online-talk/demo-intro-to-event-driven-microservices-with-confluent/" rel="nofollow" target="_blank">Live demo: Intro to Event-Driven Microservices with Confluent</a></li><li><a href="https://www.confluent.io/confluent-cloud/tryfree" rel="nofollow" target="_blank">Use PODCAST100 to get an additional $100 of free Confluent Cloud usage</a> (<a href="https://www.confluent.io/confluent-cloud-promo-disclaimer/" rel="nofollow" target="_blank">details</a>)  </li></ul>

Bridging Frontend and Backend with GraphQL and Apache Kafka ft. Gerard Klijs

In this episode, I chat with Gerard Klijs, a microservices developer who contributes to open source GraphQL projects, all about GraphQL, including subscriptions, queries and mutations. ******************************* Questions Asked *******************************  Tell us about your background.  Explain what a microservice is.  Can microservices be hosted in AWS Lambda?  What do you like the most about GraphQL?  What is introspection?  What's the difference between REST and GraphQL?  Tell us about over fetching and under fetching in REST APIs.  What are some challenges with GraphQL?  Is GraphQL language agnostic?  Is GraphQL protocol agnostic?  Can GraphQL be used as a "front end" to combine multiple data sources?  What is a GraphQL schema?  What are GraphQL queries?  What are GraphQL mutations?  What are GraphQL subscriptions?  What is a scalar in GraphQL?  What is an object in GraphQL?  What are input types in GraphQL?  What are fragments in GraphQL?  What are resolvers in GraphQL?  What are enums in GraphQL?  What are interfaces in GraphQL?  Tell us about Apollo, Yoga and other tools available for GraphQL.  What tools do you need to run and implement GraphQL?  

In this episode, I chat with Gerard Klijs, a microservices developer who contributes to open source GraphQL projects, all about GraphQL, including subscriptions, queries and mutations. ******************************* Questions Asked ******************************* <ul> <li>Tell us about your background. </li> <li>Explain what a microservice is. </li> <li>Can microservices be hosted in AWS Lambda? </li> <li>What do you like the most about GraphQL? </li> <li>What is introspection? </li> <li>What's the difference between REST and GraphQL? </li> <li>Tell us about over fetching and under fetching in REST APIs. </li> <li>What are some challenges with GraphQL? </li> <li>Is GraphQL language agnostic? </li> <li>Is GraphQL protocol agnostic? </li> <li>Can GraphQL be used as a "front end" to combine multiple data sources? </li> <li>What is a GraphQL schema? </li> <li>What are GraphQL queries? </li> <li>What are GraphQL mutations? </li> <li>What are GraphQL subscriptions? </li> <li>What is a scalar in GraphQL? </li> <li>What is an object in GraphQL? </li> <li>What are input types in GraphQL? </li> <li>What are fragments in GraphQL? </li> <li>What are resolvers in GraphQL? </li> <li>What are enums in GraphQL? </li> <li>What are interfaces in GraphQL? </li> <li>Tell us about Apollo, Yoga and other tools available for GraphQL. </li> <li>What tools do you need to run and implement GraphQL? </li> </ul>