From the course: Software Architecture: Breaking a Monolith into Microservices

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Zero downtime migrations

Zero downtime migrations

From the course: Software Architecture: Breaking a Monolith into Microservices

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Zero downtime migrations

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- [Instructor] The business made pretty clear that this whole initiative that is planned must not mean that the application has to be taken down. After all the money's made with conversions and the minute downtime can be directly measured in dollars. But being a good architect, you also want to provide a migration past that doesn't mean a complete outage. Also you want to be able to abort the migration at any point in time. It's either all or nothing. And if something fails, the application should not end up in a chaotic, half migrated state. So how can we accomplish this? First, we have to prepare the monolith and add the new functionality needed. So you will tell the responsible team to implement the service proxy methods part and here comes the important part. This new functionality should be hidden behind the feature toggle. These are programmatic switches that can be turned on or off during runtime. Technically,…

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