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- #Can you deploy entire org metadata with ant migration tool update
- #Can you deploy entire org metadata with ant migration tool upgrade
No migration tool is going to help you here because of the inherit issue of Row and Table locks. I've built and maintained sites with 200,000 rps and even some with writes upwards of 120,000 per second. If you are doing anything at scale, or plan to be on the front page of the NYT or WSJ, or setting up a site for a Superbowl ad (all of which I have done), you are going to look at it from a different perspective. So on your small/low-requeat website, enjoy! There is nothing wrong with most of them. A lot follow what Drupal and even ASP.NET MVC has for up and down migrations. There are a lot of great home-grown suggestions here.
#Can you deploy entire org metadata with ant migration tool update
I do have to do a bit of manual munging to those update scripts - adding tests for existence, for example, or fixing up the positions of 'GO' statements, but on the whole, it has worked well for going on fifteen years now. Then I have another program that takes two version numbers as parameters, and just goes and packages up all those scripts from the folder into a folder named for the version I specify, appends everything in that folder to a single file and tacks on an update to the version stored procedure at the end to the second version number specified, and adds it to the build setup so it gets included in the next build of my database updater. And it repeats, until it does not find a sql file for that version number.Īs for creating those files, every time I make a database change, I save the change script to a folder.
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#Can you deploy entire org metadata with ant migration tool upgrade
or in the case of early versions, it may upgrade from 1_0_1 to 1_0_20, etc. And maybe this time the version is '1_0_34'. If there are any errors, it reports them and stops, otherwise, it runs the stored procedure again. So, for example, if the version is '1_0_33', then it looks in its embedded scripts for 1_0_33.sql, if it finds it, it runs it.
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Then, every update file is just named with the version that it updates (NOT what it updates TO, but what it updates FROM). Then I have an app that gets a lot of update scripts built in to it as embedded files when I run it against a database, it calls that stored procedure. What I do, is have a stored procedure in my database that returns a version number. I don't do anything in Go, but this is not really a Go-specific problem. Maybe I should write a thing that does this. I guess in an ideal world I want to send over the pqdump of the dev database and run a diff against the currently-deployed database, and implement any changes. How does everyone else do this? Are there any cool tools I've not heard of to do migrations? Setting up a new database is easy (I keep a pqdump -s of the current dev database and play that against the new database to set it up), but I have to ssh into the server and use psql to make changes to the schema by hand when updating an existing deployment at the moment. Everything is working great, I use localhost for dev, I have Ansible scripts for deployment, and I automate everything with a makefile so I can just "make test" to run all my tests and "make deploy" to deploy to an existing server (and "make database_deploy" to set up a new server).Įxcept database migrations. I'm writing a web app in Go, with a Postgresql database.