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Continuous Deployment: Benefits and Best Practices

Continuous deployment refers to the last step of the continuous delivery pipeline and ensures automation at the level where codeu2019s deployment for production takes place along with performing tests for correctness.

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Continuous Deployment: Benefits and Best Practices

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  1. Continuous Deployment Benefits and Best Practices

  2. Table of Contents • Continuous Deployment • Continuous Deployment’s Activities • Continuous Deployment’s Tools • Benefits of Continuous Deployment • Drawbacks of Continuous Deployment • Continuous Deployment’s Best Practices

  3. Continuous Deployment • Continuous Deployment (CD) refers to a process for software release in which automated testing is used to validate the accuracy and the stability of the changes to a codebase, for the purpose of immediate autonomous deployment for production. It does away with the human safeguards against unproven code in live software. • In CD, automated deployments are frequently used to deliver software functionalities. Continuous deployment involves instantiating a microservice’s new version and retiring its old version. The process of CD takes a staging environment’s validated features and then deploys those into the production environment, where these are made ready for release. Continuous Deployment is the third part of the Continuous Delivery Pipeline. Continuous Delivery Pipeline consists of four parts, which are- Continuous Exploration (CE), Continuous Integration (CI), Continuous Deployment (CD) and Release on Demand.

  4. Continuous Deployment’s Activities Continuous deployment involves the following four activities. • Deployment of a solution to a production environment • Verifying the solution to ensure that the changes function in production as intended, prior to being released to customers • Monitoring and reporting the issues that happen during production • Responding swiftly to address any issue encountered during deployment

  5. 1-800-123 -8156 Whoa! That’s a big number, aren’t you proud?

  6. Continuous Deployment’s Tools The tools that are required for CD are mentioned below, in no particular order. • Automated testing- It is the most critical tool for continuous deployment as it prevents the regressions caused by the introduction of new code and is capable of replacing new code changes’ manual reviews. • Rolling deployments- Any continuous deployment pipeline should be capable of undoing a deployment when breaking changes or bugs are deployed. Hence, tools for automated rolling deployment become a necessity for ensuring proper continuous deployment. • Monitoring and issuing alerts- An efficient continuous deployment pipeline ensures real time monitoring as well as issues alerts. Alerts aid in triggering a rolling deployment into undoing, for reverting a failed deploy.

  7. Benefits of Continuous Deployment The major benefits of continuous deployment are the following- • Enhances software business’ productivity • Enables businesses to quickly respond to market demands that are continuously changing • Enables rapid validation and deployment of new features as well as ideas • Facilitates real time reaction to customers’ feedback • Enables immediate response and deployment with regard to customers’ requests for features and their submission of bug reports • Enables automation of repetitive tasks • Ensures the integration of teams and processes through a unified pipeline • Delivers a single view across all environments and applications • Renders deployments frictionless

  8. Drawbacks of Continuous Deployment • The main drawbacks of continuous deployment are that it can be expensive initially and involves maintenance for ensuring efficient functioning of the continuous deployment pipeline.

  9. Continuous Deployment’s Best Practices The best practices for ensuring continuous deployment’s success are mentioned below, in no particular order. • Ensuring a test-driven deployment- When test-driven deployment is practised, a behaviour spec is defined for new software features, prior to beginning development. Developers write automated tests which match the defined spec. The final, deliverable code satisfies the test cases and matches the spec. This ensures automated testing for all new code. • Single method of deployment- When a continuous deployment pipeline is used, it becomes essential that it remains the only method for deployment. Performing any manual changes to the continuous deployment pipeline will not only break the continuous deployment flow but also desync the deployment history. • Containerization- Containerizing any software ensures its same behaviour across any system on which it is deployed. This aids in eliminating various issues that involve a software functioning properly on one machine but acting differently on some other machine. Integration of containers can happen as part of the continuous deployment pipeline. This ensures that a code behaves similarly during automated testing, production and deployment as well as on the machine of a developer.

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