August 2017
Intermediate to advanced
332 pages
9h 16m
English
Content preview from Continuous Delivery with Docker and Jenkins
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Changing database in Continuous Delivery
The first approach to use database updates inside the Continuous Delivery pipeline could be to add a stage within the migration command execution. This simple solution would work correctly for many cases; however, it has two significant drawbacks:
- Rollback: As mentioned before, it's not always possible to roll back the database change (Flyway doesn't support downgrades at all). Therefore, in the case of service rollback, the database becomes incompatible.
- Downtime: The service update and the database update are not executed exactly at the same time, which causes downtime.
This leads us to two constraints that we will need to address:
- The database version needs to be compatible with the service version all ...
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