The document discusses different techniques for achieving zero downtime when deploying new versions of Magento 2, including: (1) terminating the old version before deploying the new one, (2) slowly rolling out the new version to replace the old one, (3) releasing the new version alongside the old one and then switching traffic over, (4) releasing the new version to a subset of users first before a full rollout, and (5) releasing the new version to a subset of users under specific conditions. It recommends using Magento Deployer Plus, an open source tool based on Deployer that allows for reliable and automated zero downtime deployments of Magento 2 projects.

1. Zero Downtime in Magento 2, Is it Possible?
Óscar Recio
Meet Magento Croatia
28. - 29. September 2018. Osijek, Hotel Osijek

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I am Oscar Recio
- Top 5 -
- 2018 - - Cor / Dev s -
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version A is terminated then version B is rolled out
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version B is slowly rolled out and replacing version A
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version B is released alongside version A, then the traffic is switched to version B
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version B is released to a subset of users, then proceed to a full rollout
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version B is released to a subset of users under specific condition
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Version B is released into a release folder and symlink to documentRoot is changed to the new release
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Symlink

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Capistrano
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Developed by Juan Alonso aka jalogut
Tool based on deployer to perform zero downtime deployments of Magento 2 projects
● Reliable fully-automated deployments tool for Magento 2
● Zero downtime deployments on Magento versions >= 2.2
https://github.com/jalogut/magento2-deployer-plus (Fav for this repo)

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The CI/CD pipeline is one of the best practices for devops teams to implement, for delivering
code changes more frequently and reliably

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27. Thank you!
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