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Dear All, These are my answers from Quora and primarily Google; please check the answer and from others sites; the answers are free and without any liability.To make a decision, write down all of the positives and negatives on a piece of paper.Thank you,

Elias Katsaniotis, MSc

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Viktoria Katsanioti,

Kaliningrad,

Russia,

matizegr@yahoo.com

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How do I write high uptime software that can be atomically updated without downtime?
in General by (91.9k points)

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you may study CMS-solutions like

  • wordpress production and update from staging site
  • update from git where the production is a local repository and is going to recieve the modification from main repository (Drupal)
  • and more

for small updates can be done fast and maybe withoun to enter the site to maintenance mode

there are other cases, when the disks are in mirror format, then you split the mirror into a-mirror and b-mirror, users work with a-mirror, you update the b-mirror and then recreate the mirror in order to perform the update

I hope to help.

by (91.9k points)
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