Gradual Updates:
- Rolling deployment updates or deploys new versions of an application gradually across the production environment.
Continuous Availability:
- Unlike other deployment strategies, rolling deployment ensures continuous availability of the application by updating only a subset of servers at a time.
Phased Approach:
- The deployment process is phased, with updates applied to one server or a small group of servers at a time.
Monitoring and Validation:
- Each phase of the deployment involves monitoring and validation to ensure that the new version is functioning correctly before moving to the next phase.
Reduced Downtime:
- By updating servers in a staggered manner, rolling deployment minimizes downtime and disruption to users.
Easy Rollback:
- Rolling deployment allows for easy rollback in case of any unexpected problems, as only a small portion of the infrastructure is affected at any given time.
Automated Processes:
- Automated deployment pipelines streamline the rolling deployment process, ensuring consistency and reliability.
Load Balancer Integration:
- Rolling deployment often involves integration with load balancers to distribute traffic evenly across both old and new versions of the application during the transition period.
Scalability:
- Rolling deployment can easily scale to accommodate large production environments with numerous servers or instances.
Risk Reduction:
- By updating servers gradually and continuously monitoring the deployment process, rolling deployment reduces the risk of widespread issues or disruptions compared to other deployment strategies.