Travis CLI Push vs. Third-Party CD Pull for Zero-Downtime Deployments

When orchestrating a zero-downtime migration for a Java/Hibernate application, the deployment phase must ensure that database schema updates and application binaries are synchronized without interrupting active traffic. Since Travis CI serves as the build and test orchestrator rather than the hosting environment, the hand-off to the production infrastructure is a critical design point.

One approach involves using the Travis CLI to push build artifacts directly to a target server. An alternative is integrating a third-party Continuous Delivery (CD) tool that pulls the verified build from Travis CI only after specific health checks are passed.

The primary constraint is preventing database locking or application instability if multiple build pipelines trigger concurrent deployment attempts during high-frequency commit cycles.

• Does the Travis CLI push method provide sufficient concurrency control to prevent overlapping deployments?
• How does the pull-based CD integration affect the overall lead time from commit to production compared to a direct push?