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Ceylon 1.3.0 is now available

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Ceylon 1.3.0 is a major release of the Ceylon language, with over 330 issues closed. This is the first release of Ceylon which supports Android development, the Node Package Manager (npm), and Wildfly Swarm. For the JVM, this release is backwards-compatible with all releases of Ceylon 1.2 (1.2.0 to 1.2.2). For JavaScript, this release is backwards-compatible only with the previous release ...

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How an engineer is supposed to survive accounting

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One of the “pleasures” of having your own business is dealing with accounting. Now, to survive I tried a few things like: generating invoices for my clients processing bank statements One boring thing to do is to organizing receipts and invoices I had to pay: travel expenses, books, conference fees, etc. You get the idea. Why I need a software ...

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How to Secure Elasticsearch and Kibana

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Introduction Elasticsearch (ES) is a search engine based on Lucene. It provides a distributed, multitenant-capable, full-text search engine with an HTTP web interface and schema-free JSON documents. Kibana is an open source data visualization plugin for Elasticsearch. It provides visualization capabilities on top of the content indexed on an Elasticsearch cluster. Users can create bar, line, and scatter plots, or pie charts and maps on top of large volumes of data. ...

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Java 9 module-info Files in the Eclipse IDE

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Note that this post is not intended to be a status update; it’s just a quick update based on some experimenting that I’ve been doing with the beta code. It’s been a while, but I’m back to experimenting in Java 9 support in the Eclipse IDE. For testing purposes, I downloaded the most recent Oxygen (4.7) integration build (I20160914-0800) from the Eclipse ...

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Push notification in Android using Firebase cloud messaging

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This post covers how to send push notification in Android.  In the past, we were used to send push notification in Android using Google Cloud messaging service. Recently, it was introduced a new way to send push data using Firebase. Even if the basic principles remain the same Firebase introduced some interesting new features. Firebase supports other services like: Authentication ...

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Spring boot with Spring Security and jdbc

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Spring security Is a wonderful framework saving lots of time and effort from the developers. Also It is flexible enough to customize and bring it down to your needs. Working with JDBC and Spring Security is pretty easy and many actions are automated. This would be a minimal showcase. The gradle file contains dependencies such as spring-security, spring-jdbc and h2 ...

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The Rationale for Securing Big Data

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This blog post is the first in a series based on the ebook The Six Elements of Securing Big Data by security expert and thought leader Davi Ottenheimer. In his book, Davi outlines the rationale and key challenges of securing big data systems and applications. He does so using some great anecdotes and with good humor, making the book a good ...

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More on Spooling Queries and Results in psql

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In the recent blog post SPOOLing Queries with Results in psql, I looked briefly at some PostgreSQL database psql meta-commands and options that can be used to emulate Oracle database‘s SQL*Plus spooling behavior. In that post, I wrote, “I have not been able to figure out a way to … have both the query and its results written to the ...

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Service Discovery Inside A Docker Swarm Cluster

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The text that follows contains excerpts from the Service Discovery Inside A Swarm Cluster chapter of the The DevOps 2.1 Toolkit: Docker Swarm book. Service Discovery In The Swarm Cluster The old (standalone) Swarm required a service registry so that all its managers can have the same view of the cluster state. When instantiating the old Swarm nodes, we had ...

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