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1. What is Nexus? Nexus is a repository manager. It allows you to proxy, collect, and manage your dependencies so that you are not constantly juggling a collection. We'll begin with a simple description of what software development involves, and, for the purposes of this article, we're going to discuss Enterprise Java Development. Before I can tell you what Nexus does, we have to answer the following question. Efficient Development Infrastructure: Source control systems, issue trackers, mailing lists, continuous integration servers, wikis, integrated development environment, and repository managers; when you start a new open source project one of the first things you decide upon is what you are going to use for each of these components. Let's go through each of these components and discuss the various choices that are available: •Source Control Systems: This is the service that is going to track your code, the code that is eventually transformed into a working system. So, if you are developing web sites, the code is likely a primary artifact right next to content and design. Source control systems are an established piece of infrastructure and programmers have been using them for decades. •Mailing Lists: While this might seem too simple to be considered a part of development infrastructure, it is often the most essential and most basic piece of infrastructure. Efficient development teams tend to share just about everything technical on a shared mailing list. Each focused development team has a mailing list, and the discussions are archived for future reference. As the team's composition evolves over time, this shared conversation can be an important record for bug fixes and institutional knowledge about an application. Mailing lists, like source control, have been around for decades. •Issue Trackers: Your team will need a place to store tasks and bug reports, and they will also need to have a way to plan what goes into the next software release. A good issue

2. tracker provides a programmer with a way to customize and filter the list of issues by project or by person. A great issue tracker can double as both a collaboration tool and as a simple productivity dashboard for programmers. Issue trackers have been used by open source projects for more than a decade, but modern issue trackers (like JIRA) are still developing features which redefine the category. •Continuous Integration Servers: Think of an automated "robot", sitting in a room next to your developers constantly waiting for code to change. When code changes, this automated "robot" brings those changes on to his system and performs a software build. For More Information about DevOps Online Training ClickHere Contact us at +91-9989971070/online@visualpath.in