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  1. Lessons Learned Writing Spring Boot Auto Configurations

    My team and I make heavy use of Spring Boot to build microservices that power our applications at our company. We've even gone so far as to write our own custom auto configurations to ease development. We package these auto configurations along with other goodies into what we call our platform.Recently, after releasing a new platform version, we encountered an issue where one of our microservices would fail to start at what appeared to be random intervals. After further digging, we noticed specifically...
  2. Spring Cloud and Netflix Ribbon: Client-side Load Balancing

    Eventually you'll reach a point where you need to run multiple instances of an application or a service for high availability or to manage increased load. That's what load balancers are for. There's generally two different types:What many people would call a "load balancer" is actually a server-side load balancer. It can be implemented in hardware or software. The traffic is sent to a dedicated service that decides where to send the traffic, using an algorithm like round-robin, to one of the...
  3. An Introduction to R for Java Developers

    As a Software Engineer I'm always keeping up to date with technology and one of the things that helps me do that is book reviews. Right now, I'm reviewing The Book of R: A First Course in Programming and Statistics by Tilman M. Davies. R is a programming language used in statistical computing and has gained in popularity in the recent years due to the explosion of data and its applications like Machine Learning.
  4. Spring Boot 1.4: @MockBean and @SpyBean

    It's August 2016 and the Spring Boot team recently released Spring Boot 1.4 ( on July 28th, 2016 ). Some of the biggest improvements and simplifications are around unit and integration testing. We'll take a focused look at two of the newly added features: @MockBean and @SpyBeanThe newly introduced annotation, (@MockBean), adds generalized support for mocking of any Spring bean. If you've used Mockito Annotations before, @MockBean is simliar to @Mock but with Spring support.Suppose we have a simple...
  5. Programming languages - salaries and demand (May 2015)

    Here is what happened to the software development market in May 2015. For previous months, take a look at the Gooroo Insights series.We are currently analysing ~500,000 tech jobs every single month, half of which are in the software development area. This provides a unique dataset which can tell us what skills organisations are hiring for and what salaries they're advertising.C# was in first place in April but fell back down in May in terms of demand. This puts Java in the number one position again...
  6. Programming languages - salaries and demand (April 2015)

    Continuing our monthly Gooroo Insights series, here is what happened to software development jobs in April 2015.We are currently analysing ~500,000 tech jobs every single month, half of which are in the software development area. This provides a unique dataset which can tell us what skills organisations are hiring for and what salaries they're advertising.In April, C# has taken lead place from Java in the number of job mentions. These two remain the overall most popular languages. They're mentioned...
  7. Programming languages - salaries and demand (March 2015)

    We've released a few of these reports before, and here is the first for 2015. With our database now analysing ~500,000 tech jobs every single month, we have a unique dataset which can tell us what skills organisations are hiring for and what salaries they're advertising.This year we have seen quite a lot of change in the popularity of various programming languages. Whether this is a feature of different industry's hiring cycles is still to be determined.Battling for 1st position are Java and C# with...
  8. Programming Languages Index - January 2014

    The following charts show the salary and demand statistics for jobs mentioning various Programming Languages. The data is taken from the Gooroo.io analysis of job advertisements in the United States, Great Britain, and Australia.When reading these charts, the lower the demand for a skill, the less reliable the salary indicators become. It only takes a handful of jobs to shift the average.Job data is extremely useful as it's plentiful and provides a lot of fascinating and interesting aspects to work...
  9. Another Top 10 Languages list for 2014

    Everyone seems to publish their Top 10 list at the end of the year. Some rely on stats from surveys, others look at how many GitHub projects use a certain language, whilst others are purely anectodally based. They're all good ways to investigate the trends (except maybe the anectodal version).Using our data which consists now of over 4,000,000 job ads in the United States, Great Britain, and Australia, we look at how often a particular skill is mentionedin ads.Immediately we notice that SQL has almost...
  10. Programming languages - salaries and demand (October 2014)

    A few months ago we wrote up a brief analysis of key programming languages, showing the demand for each language and the salaries being offered. We now have almost 3 million job advertisements in our analysis engine so we should take a fresh look at what it says.In July, we saw three main clusters, the established leaders, the followers, and the niche.The leaders of the group are still ahead in very much the same positions. Java, C++, and C all pay well and are in high demand. JavaScript and C# are...
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