What is a red black deployment?

Red-Black deployment is a release technique that reduces downtime and risk by running two identical production environments called Red and Black. At any time, only one of the environments is live, with the live environment serving all production traffic.

What is black deployment?

The Red version is live in production. You deploy the Black version to one or more servers. When the Black version is fully operational, you switch the router to direct all traffic to it (or you scale Red to 0 instances and Black to N). If anything goes wrong, you revert the operation.

What is difference between blue and green deployment?

Blue-green deployment is a technique that reduces downtime and risk by running two identical production environments called Blue and Green. Once you have deployed and fully tested the software in Green, you switch the router so all incoming requests now go to Green instead of Blue. Green is now live, and Blue is idle.

What are the types of deployment?

Six Strategies for Application Deployment

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.

Why is it called Canary release?

“Canary releases” get their name from an old coal mining tactic. Miners would release canaries into coal mines in an attempt to gauge the amount of toxic gases present. If the canary survived, well, things were safe.

What is blue-green deployment?

Blue green deployment is an application release model that gradually transfers user traffic from a previous version of an app or microservice to a nearly identical new release—both of which are running in production. There are downsides to this continuous deployment model.

What is a canary deployment?

A canary deployment is a deployment strategy that releases an application or service incrementally to a subset of users. A canary release is the lowest risk-prone, compared to all other deployment strategies, because of this control.

What is AB deployment?

A/B testing is a release strategy. With A/B testing, implementation is similar to the process of canary releasing. You have a baseline feature, the “A” feature, and then you deploy or release a “B” feature. You then use monitoring or instrumentation to observe the results of the feature release.

What is a B deployment?

A/B deployments. The A/B deployment strategy lets you try a new version of the application in a limited way in the production environment. You can specify that the production version gets most of the user requests while a limited fraction of requests go to the new version.

What is shadow deployment?

A Shadow deployment strategy is one where the new version is available alongside the old version in prediction, but a copy or forked version of traffic to the older version is sent to the new version for production testing. The newer version is rolled out, post successful traffic and load testing.

What’s the difference between red / black deployment and blue / green?

The actual meaning can vary and many people are using “red-black” as another term for “blue-green”, maybe just because their team colors are red and black. :^) Both blue/green and red/black deployment represent the same concept. While the first is the most common term, the latter seems to be used mainly in Netflix and their tools (like Spinnaker ).

How does red-black deployment reduce downtime and risk?

Red-Black Deployment Red-Black deployment is a release technique that reduces downtime and risk by running two identical production environments called Red and Black. At any time, only one of the environments is live, with the live environment serving all production traffic.