In Kubernetes there are a few different ways to release an application, it is necessary to choose the right strategy to make your infrastructure reliable during an application update.
There are a variety of techniques to deploy new applications to production, so choosing the right strategy is an important decision, weighing the options in terms of the impact of change on the system, and on the end-users.
We are going to talk about the following strategies:
Recreate: Version A is terminated then version B is rolled out.
Ramped (also known as rolling-update or incremental): Version B is slowly rolled out and replacing version A.
Blue/Green: Version B is released alongside version A, then the traffic is switched to version B.
Canary: Version B is released to a subset of users, then proceed to a full rollout.
A/B testing: Version B is released to a subset of users under specific condition.
Shadow: Version B receives real-world traffic alongside version A and doesn’t impact the response.
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