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A comment on Shipping is your company’s heartbeat (2013). Parent comment

Re:Shipping is your company’s heartbeat (2013) by AznHisoka on Sunday September 24, 2017 @02:16PM (#15325795)
this is easy and doable if your change is a front end change.

good luck trying this when its a backend change involving distributed threads, locks, resources, etc where production load is 100x more than staging/test.

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Re:Shipping is your company’s heartbeat (2013) by greenleafjacob on Sunday September 24, 2017 @02:49PM (#15325923)
If the cost of downtime is high enough you can mirror some or all traffic onto a shadow copy of the infrastructure.
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Re:Shipping is your company’s heartbeat (2013) by BillinghamJ on Sunday September 24, 2017 @03:04PM (#15325984)
Obviously in those cases, you’d take more than a minute to review prior to deployment...

There are plenty of backend changes where your list of complexities do not apply.

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