JRebel is a build automation tool developed by Estonian company ZeroTurnaround, acquired by Rogue Wave Software in 2017, and then acquired (and now supported by) Perforce since that company's 2019 acquisition of Rogue Wave. The vendor says users of JRebel saves Java teams a month of coding time per year on average.
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Travis CI
Score 7.3 out of 10
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Travis CI is an open source continuous integration platform, that enables users to run and test simultaneously on different environments, and automatically catch code failures and bugs.
I recommend JRebel for Java developers, it will remove the time needed for redeployment, it will increase the focus on the task at hand (without being distracted by the redeployment) and will make them happier. I recommend JRebel for Java Development Managers, they should purchase this for their teams - it will increase productivity, decrease the product's time to market, and it will save money for the company. The ROI can be calculated upfront and presented to higher level management for approving this, if needed.
TravisCI is suited for workflows involving typical software development but unfortunately I think the software needs more improvement to be up to date with current development systems and TravisCI hasn't been improving much in that space in terms of integrations.
Deploys all layout changes consistently (when Instant Run was initially available, you couldn't tell if the change you made to a layout was actually being tested or not).
Doesn't require a full build as often as Instant Run when changing code.
Works with compile time annotation libraries like Realm, etc.
I think they could have a cheaper personal plan. I'd love to use Travis on personal projects, but I don't want to publish them nor I can pay $69 a month for personal projects that I don't want to be open source.
There is no interface for configuring repos on Travis CI, you have to do it via a file in the repo. This make configuration very flexible, but also makes it harder for simpler projects and for small tweaks in the configuration.
TravisCI hasn't had much changes made to its software and has thus fallen behind compared to many other CI/CD applications out there. I can only give it a 5 because it does what it is supposed to do but lacks product innovation.
The performance of JRebel is great. It is enabling the Java team to do hot re-deployments and it has to be transparent and fast for the user, otherwise the whole purpose of reducing wasted time with re-deployments doesn't make sense. Also the User Interface for License Server management and analytics loads fast and the navigation through pages is quick.
After the private equity firm had bought this company the innovation and support has really gone downhill a lot. I am not a fan that they have gutted the software trying to make money from it and put innovation and product development second.
Hot code swapping doesn't have many players...it's mainly JRebel. We use JRebel a lot in our backend code development where it minimizes our development cycle (20min down to 30sec). For Android, the competitor is Android Studio's Instant Run which works fairly well now. For smaller apps, Instant Run is faster deploying but needs more full builds. With JRebel, you hardly ever need to do a full build.
Jenkins is much more complicated to configure and start using. Although, one you have done that, it's extremely powerful and full of features. Maybe many more than Travis CI. As per TeamCity, I would never go back to using it. It's also complicated to configure but it is not worth the trouble. Codeship supports integration with GitHub, GitLab and BitBucket. I've only used it briefly, but it seems to be a nice tool.
It's improved my ability to deliver working code, increasing my development velocity.
It increases confidence that your own work (and those of external contributors) does not have any obvious bugs, provided you have sufficient test coverage.
It helps to ensure consistent standards across a team (you can integrate process elements like "go lint" and other style checks as part of your build).
It's zero-cost for public/open source projects, so the only investment is a few minutes setting up a build configuration file (hence the return is very high).
The .travis.yml file is a great way for onboarding new developers, since it shows how to bootstrap a build environment and run a build "from scratch".
