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Java SE 8 new features tour: Calculating timespans with the new DateTime API

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Cleaner, readable, and powerful coding with Java SE 8 New DateTime API JSR 310 ….. In the previous article “Processing Collections with Streams API”; I have deeply dived into explanation, and exploration on how to traversing collections with streams, Creating streams from collections and arrays, and finally Aggregating stream values.In this article of the “Java SE 8 new features tour” ...

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System Observability: How to Make Your Production Environment Great Again

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Observability is not just about monitoring your system, it’s about understanding it Monitoring your production environment is essential. Performance issues, errors and exceptions happen all the time and we have to know what’s going on. But how can we see when and why certain issues happen? That’s where the concept of Observability comes in, to help us gain an in ...

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Introducing Microservices iQ

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Want to know the Top 6 Performance Challenges in Managing Microservices in a Hybrid Cloud? Download the Whitepaper from AppDynamics: Grab it now! As part of AppDynamics Summer ‘16 release, we are announcing Microservices iQ, a new intelligent application performance engine, that enables enterprises to efficiently manage microservice based application environments and deliver performance that delights their customers while exceeding ...

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[MEGA DEAL] The Developer’s AWS Mastery Bundle (85% off)

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Become An In-Demand Cloud Guru & Programmer by Mastering Amazon Web Services Over These 4 Courses Hey fellow geeks, This week, on our JCG Deals store, we have an extreme offer. We are offering The Developer’s AWS Mastery Bundle for only $XX instead of the original price of $199, yeap that is a massive 85% off. Train to Pass A ...

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SPOOLing Queries with Results in psql

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SQL*Plus, the Oracle database‘s command-line tool, provides the SPOOL command to “store query results in a file.” The next screen snapshot shows SPOOL used in SQL*Plus to spool the listing of user tables to a file called C:\pdf\output.txt.                 Both the executed query and the results of the query have been spooled to ...

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Securing NoSQL Databases: Use the Force

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With stories of the thefts of millions of credit card records and sensitive employee data at some of the world’s largest companies and government agencies dominating recent headlines, it’s not surprising that organizations are doubling down on security. Security is finally starting to get top management’s attention. Ponemon Institute’s 2015 security report found that 55 percent of top executives rated ...

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Does my method look big in this?

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How big is the following Java method? public Collection getDescription() { SystemLibrary systemLib = registry.get(SystemLibrary.class); Analysis analysis = systemLib.getCurrentAnalysis(registry); return getDescription(analysis); } This humble method locates some sort of system library, retrieves an Analysis, and returns a description of that Analysis. But how big would you say it is? Would you say it is 3 lines of code long? If ...

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An introduction to the Oracle Service Bus

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We are in the process of designing a new system for a telecommunication provider where we have looked at the Oracle Service Bus (OSB) to be used as the enterprise service bus. One of the first plus points for me was the amazing tooling support it encompasses. Oracle has integrated all their enterprise integration software stack into a cohesive whole ...

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An introduction to working with JAXB

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I am in the process of migrating a few modules that are dependent on Apache XMLBeans to JAXB. It has been an exciting and challenging few days. I thought of jotting down a few important things I came across for anyone who might find it useful in the future. First of all, let us look at setting up the maven plugin ...

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Testing Spark Streaming: Integration testing with Docker Compose

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In the first post of this series, we saw how to unit test Spark Streaming operations using Spark Testing Base. Here we’ll see how to do integration testing using Docker Compose. What is Integration testing We previously saw a discussion about unit and integration testing. Again, as we want to keep the post focused, we’ll work with a definition of ...

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