London Java Community

The LJC is delighted to continue our new series of events, aimed at giving all Community members an opportunity to present at an LJC meet-up. If you have an interesting topic to share, these events are for you. You don’t have to be an experienced speaker - we want to hear your story and offer you a friendly, informal platform to practise and improve your presentations. For attendees we want this to be a meeting place, where you can talk and network with other technologists in London. If you’d like to speak at a future event, please submit your talk and bio details here: https://sessionize.com/ljc/ Huge thanks to our friends at Couchbase for hosting this event and supporting our Community. Speaker One: Haoyi Li Title: Java build tooling could be so much better! Synopsis: The Java language is known to be fast, safe, and easy, but Java build tools like Maven or Gradle have a reputation for being slow, fragile, and confusing. This talk will explore what "could be": where current Java build tools fall behind modern build tools in other communities, in performance, extensibility, and ease of getting started. We will end with a demonstration of an experimental build tool "Mill" that makes use of these ideas, proving out the idea that Java build tooling has the potential to be much faster, safer, and easier than it is today. Speaker One Bio: Li Haoyi graduated from MIT with a degree in Computer Science and Engineering, since then has built core infrastructure for high-growth companies like Dropbox and Databricks, and has been a major contributor to the open source community. His projects have over 10,000 stars on Github, and are downloaded over 20,000,000 times a month. Haoyi has deep experience in the JVM and has professionally built distributed backend systems, programming languages, high-performance web applications, and much more. Speaker Two: Nicolas Fränkel Title: Practical introduction to OpenTelemetry tracing Synopsis: Tracking a request’s flow across different components in distributed systems is essential. With the rise of microservices, their importance has risen to critical levels. Some proprietary tools for tracking have been used already: Jaeger and Zipkin naturally come to mind. Observability is built on three pillars: logging, metrics, and tracing. OpenTelemetry is a joint effort to bring an open standard to them. Jaeger and Zipkin joined the effort so that they are now OpenTelemetry compatible. In this talk, I’ll describe the above in more detail and showcase a (simple) use case to demo how you could benefit from OpenTelemetry in your distributed architecture. Speaker Two bio: Developer Advocate with 15+ years experience consulting for many different customers, in a wide range of contexts (such as telecoms, banking, insurances, large retail and public sector). Usually working on Java/Java EE and Spring technologies, but with focused interests like Rich Internet Applications, Testing, CI/CD and DevOps. Also double as a trainer and triples as a book author. This event is organised by RecWorks on behalf of the London Java Community. The London Java Community is sponsored by Hazelcast, Neo4j, Redis, and Discover