Category: Hazelcast

Feed: Blog – Hazelcast. Author: Rafal Leszko. You want to build a Kubernetes Operator for your software. Which tool to choose from? Operator SDK with Helm, Ansible, or Go? Or maybe start from scratch with Python, Java, or any other programming language? In this blog post, I discuss different approaches to writing Kubernetes Operators and list each solution’s pros and cons. All that to help you decide which tool is the right one for you! You can find the source code for this blog post here. Introduction Kubernetes Operator is an application that watches a custom Kubernetes resource and performs ... Read More

Feed: Blog – Hazelcast. Author: Nicolas Frankel. Hazelcast is built on open source foundations. It’s part of our DNA, and we strive to uphold open source values in our day-to-day work. This commitment allows external contributors to make Hazelcast better so that the whole community can benefit from a collective effort. No contribution is too small, but, indeed, some of our community members constantly go “above and beyond” to help us improve our software. For a long time, we wanted to find a way to show them how much we value their time and effort. Today, I’m very happy to ... Read More

Feed: Blog – Hazelcast. Author: Andrey Pechkurov. As you may already know, the Hazelcast In-Memory Data Grid (IMDG) ecosystem includes a variety of clients for different languages and runtimes, which includes Node.js client library as a part of that list. High-performance and low-latency for data access have always been a key feature of IMDG, so it’s not surprising that we put a lot of time and effort into optimizing both server-side and client libraries. Our Node.js library went through numerous performance analysis and optimization runs over the course of several releases, and we think it’s worth telling you the story ... Read More

Feed: Blog – Hazelcast. Author: Jiri Holusa. We are excited to announce the production-ready release of Hazelcast IMDG 4.1. Below, we highlight the most notable features and enhancements implemented in this release. You can find the list of changes in the release notes. Before we dive into the details, we want to share a few numbers: It took exactly 9 months since the last minor, in this case also major, release of 4.0. We closed more than 250 GitHub issues. Almost 700 pull requests got merged. 30+ external community contributors to various modules and integrations. Shoutout to Community The development period ... Read More

Feed: Blog – Hazelcast. Author: Hendy Appleton. Hazelcast is pleased to announce the first of three Hazelcast professional credentials. The Developer Essentials credential is issued to engineers who have completed basic training on developing applications that incorporate the Hazelcast platform to perform stream processing, in-memory computing, and in-memory storage. Credential-holders have hands-on practice in creating distributed data structures, distributed computing jobs, and stream processing pipelines, and have passed a comprehensive exam on the topics covered in the training. Our next credential, Hazelcast Operations, will be released later this quarter. You can get information on all our credentials from http://hazelcast.com/services/training#credentials. Why ... Read More

Feed: Blog – Hazelcast. Author: Marko Topolnik. Today we’re releasing Hazelcast Jet 4.3, our fourth release of 2020! We took part in Google Summer of Code that ended just a few weeks ago, and this release already brings a production-ready piece of work by our student, Mohamed Mandouh: distributed in-memory sorting. Mohamed’s primary focus was research into the feasibility of integrating RocksDB or a similar DB library as a disk-based state backend for Jet’s hash join, aggregation and sorting, and we plan to continue with this work for some more time. Here are the main improvements in this release: Benchmarking ... Read More

Feed: Blog – Hazelcast. Author: Andrey Pechkurov. Hazelcast Node.js client 4.0 is now available! Let’s see what are the main changes in this new release. Hazelcast Client Protocol 2.0 Node.js client now uses Hazelcast Open Binary Client Protocol 2.0, which has a number of enhancements and serialization improvements when compared with 1.x. For the end-user, it means that the client now supports IMDG 4.0+. Also, note that you cannot use a 4.0 client with IMDG 3.x members. Ownerless Client In Hazelcast 3.x, clients were implicitly assigned to an owner member responsible for cleaning up their resources after they leave the ... Read More

Feed: Blog – Hazelcast. Author: Nicolas Frankel. At Hazelcast, open source is not only a business model; it’s the foundation of our company. We believe in the right of users to access, read, and improve upon our work. Because we know that it’s not easy to get started in open source in general, especially within a specific project, we participated in this year’s Google Summer of Code. This is only the beginning, though. We intend it to be our first of many. Yet, the next GSoC is expected next year. Fortunately, there are other worthwhile initiatives that are much closer ... Read More

Feed: Blog – Hazelcast. Author: Nicolas Frankel. From Wikipedia, Reactive Programming is “a declarative programming paradigm concerned with data streams and the propagation of change.” The programming model is complex to master. It requires a lot of experience to feel comfortable with it. However, there’s no denying that it fits the cloud ecosystem perfectly. Since on-premises infrastructure is oversized, running a program that executes a couple of additional CPU cycles won’t change anything. On the other hand, you will pay for them if you host the same program on third-party infrastructure. Depending on the number of those cycles, and the ... Read More

Feed: Blog – Hazelcast. Author: Nicolas Frankel. Google Summer of Code (GSoC) is a summer initiative that allows students to obtain a first deep dive into Open Source projects. It has several benefits: GSoC creates bonds between students and Open Source communities. Some, but not all, students continue to contribute to the Open Source project they worked on after GSoC This initiative is a two-way street. Working on an Open Source project goes way beyond writing code (or tests, or documentation, etc.). It’s being part of a group, which can support the individual on the task at hand, but also ... Read More