Travis CI

Travis CI
Name	Travis CI
Developer	Travis CI GmbH
Released	2011
Programming language	Ruby
Operating system	Cross-platform
Genre	Continuous integration

Travis CI. It is a hosted, distributed continuous integration service used to build and test software projects hosted on GitHub and Bitbucket. The service, operated by Travis CI GmbH, offers integration with numerous programming languages and automates the testing process. It is widely adopted within the open-source software community and supports both Linux and macOS build environments.

Overview

Travis CI functions as a cloud computing-based platform that automatically runs tests for software projects whenever new code is committed to a version control repository. It is designed to integrate seamlessly with popular software development platforms, primarily GitHub, to foster agile software development practices. The system operates by reading instructions from a configuration file within the project's repository, typically named `.travis.yml`. This approach enables developers to implement test-driven development and continuous delivery workflows efficiently, reducing integration problems and improving code quality.

Features and capabilities

The platform supports a wide array of programming languages including Python, Java, Node.js, PHP, Ruby, and C++. It provides parallelized test execution to speed up the build process and offers Docker support for creating isolated and reproducible build environments. Additional features include cron jobs for scheduled builds, comprehensive build matrices for testing against multiple language versions and environments, and detailed build logs. It also integrates with external notification services like Slack and email to alert teams of build status.

Configuration and usage

Configuration is managed through a YAML file placed in the root directory of a repository. This file defines the build environment, dependencies, and the sequence of commands to run for testing and deployment. Users can specify language versions, install necessary packages via apt-get for Linux or Homebrew for macOS, and execute scripts. The service can deploy successful builds to various platforms such as AWS, Google Cloud Platform, Heroku, and PyPI. It also allows for encrypted environment variables to securely store sensitive data like API keys.

Integration with GitHub

Integration with GitHub is a core aspect, allowing Travis CI to automatically trigger builds on events like pushes and pull requests. This tight coupling provides immediate feedback on proposed changes, displayed directly within the GitHub interface. The service utilizes GitHub Apps for authentication and repository permissions, enabling it to post build statuses, manage webhooks, and comment on pull requests. This integration is fundamental to many open-source projects hosted on GitHub, facilitating collaborative development and code review processes.

Pricing and plans

Travis CI offers a tiered pricing model. It provides a free plan for open-source projects hosted on public GitHub repositories, which includes unlimited build minutes. For private repositories and commercial use, Travis CI GmbH offers paid plans through Travis CI.com, which provide concurrency, priority support, and additional features. Enterprise customers can opt for Travis CI Enterprise, an on-premises version that can be deployed within a private data center or cloud infrastructure for enhanced security and control.

History and development

The service was initially developed in 2011 by Joshua Kalderimis, Mathias Meyer, and Sven Fuchs as a Ruby on Rails application to address their own continuous integration needs. It gained rapid popularity following a presentation at the RubyConf conference. In 2012, the company Travis CI GmbH was formally established in Berlin, Germany. Over the years, it expanded support beyond Ruby to become a polyglot platform. In 2019, Idera, Inc. acquired the company, and subsequent restructuring led to the closure of the original travis-ci.org service for open-source projects in 2021, consolidating all operations onto Travis CI.com.

Category:Continuous integration