Apache Druid: the fast, real-time, open source analytics data store

Organised by ODSC

At September's ODSC meetup, our guest speaker will talk about Apache Druid.

and others will be attending

How Open Source is Funded & Privacy Engineering for the World of Kafka

Organised by LJC: London Java Community

Come along to discover how Open Source is funded and privacy engineering in Kafka!

will be attending

RedisTimeSeries = A Time Series Database using Redis

Organised by Redis London

Come to the meetup to learn how to use RedisTimeSeries features such as down sampling, data retention, and time-bucketed aggregation, and how to integrate it with Grafana

will be attending

Build progressive web apps with Angular

Featuring Simona Cotin

Progressive web apps (PWA) are becoming an industry standard for building web applications. With reliability, speed and immersive user experience in mind, PWAs help you reach a broader audience. In this session we will take an existing web app and convert it into a PWA.

WAL: everything you want to know

Featuring Devrim Gündüz

PostgreSQL's WAL is one of the core points of PostgreSQL, and used in many areas: Backup, replication, etc.

DecSecOps - How to Continuously Integrate Security into DevOps with the Open Source Way

Featuring Daniel Oh

DevOps is getting more popular and implementing from start-up to enterprise across multiple industries. In this era of DevOps, intent of DevSecOps is to build on the mindset that “everyone is responsible for security” with the goal of safely distributing security decisions at speed and scale to...

Building Event Systems

Featuring David Dawson

Microservices, a word as hard to define as distributed systems can be to build. Yet they are now a very popular approach to building systems that can adapt and thrive on change.

The hyper-relational database for knowledge-oriented systems

Featuring Haikal Pribadi

AI systems process knowledge that is far too complex for current databases. They require more expressive data schemas and intelligent query languages to provide a strong abstraction over complex data and their relationships. In this talk, we will discuss how GRAKN.AI, a distributed...

Sustaining Open Source for the Future

Featuring Pia Mancini

OSS projects are the building blocks of the vast majority of products, services, and digital infrastructure we use today, and they are largely made by unpaid communities. We need to shift gears and think about how OSS can leverage the tangible benefits it provides companies to be sustainable for...

Swift for Arduino

Featuring Carl Peto

Are you thinking about starting a hardware project using Swift? Check out this talk by Carl Peto to help you with those first steps!

Inside the Rust compiler

Featuring Nicholas Matsakis

The Rust compiler is undergoing a time warp. Originally designed as a 1970s-style "batch style" compiler, albeit one supporting a rather more modern type system, we've spent the last two years transforming it into an incremental, lazy architecture (a process that is still ongoing).

Exploring Leadership, Mangement, and Mentorship in Open Source - Intermediate

Featuring Charlie Robbins

Leadership. Management. Mentorship. When considering decentralized Open Source projects all of these ideas come into play is a truly unique way. That is because of the nature of Open Source itself: self-motivation and self-determination. The individual has considerably more control over their own...

How to Become an Awesome Open Source Contributor - Beginner

Featuring Christos Matskas

Join in for this updated talk with Christos!

Constraint solving in Java with OptaPlanner

Featuring Geoffrey De Smet

What's the shortest trip to visit all European capitals? Or the cheapest vehicle routing schedule to restock all our retail stores? How do we optimize our cloud machines? When do we assign nurses to shifts in our hospitals to make them as happy as possible? Which crops do we plant on which...

The JVM as a platform for building smart contracts

Featuring Ben Evans

In this talk, Ben will introduce some fundamentals of cryptocurrency, before diving deep into Java bytecode and classloading, to discuss a new way to make the JVM environment suitable for running 'smart contracts'. These contracts have applications to distributed cryptographic ledgers,...

Lightning Talk Session: What's new in F# xplat tooling in 2017?

Featuring Krzysztof Cieślak

During the talk, you will learn cross platform tooling novelties that are created by F# opensource community. You will also discover new features in Ionide and Forge, updates to FsharpLint, new way of testing with Expecto, and new TryFsharp webpage.

An open-source contribution story

Featuring Murray Steele

A short story about a contribution I made to rubygems that took a couple of years. And how that's totally ok.

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Generics: Past, Present and Future

Featuring Raoul-Gabriel Urma and Richard Warburton

Generics are one of the most complex features of Java. They are often poorly understood and lead to confusing errors. Unfortunately, it won’t get easier. Java 10, release planned for 2018, extends Generics. It’s now time to understand generics or risk being left behind. We start by stepping back...

Paket 3 – Embracing git for dependency management

Featuring Steffen Forkmann

Paket is a dependency manager for .NET and mono projects, which is designed to work well with NuGet packages and also enables referencing files directly from git repositories. It enables precise and predictable control over what packages the projects within your application reference.

At F#...

Security Beyond the Libraries

Featuring Eoin Woods

The London Java Community (LJC) is a group of Java Enthusiasts who are interested in benefiting from shared knowledge in the industry. Through our forum and regular meetings you can keep in touch with the latest industry developments, learn new Java (& other JVM) technologies, meet other...