sqitch
Flyway
sqitch | Flyway | |
---|---|---|
7 | 81 | |
2,715 | 7,786 | |
1.2% | 0.7% | |
7.2 | 7.2 | |
about 2 months ago | 12 days ago | |
Perl | Java | |
MIT License | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
sqitch
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Ask HN: What tool(s) do you use to code review and deploy SQL scripts?
We use https://sqitch.org/ and we’re fairly happy with it. Sqitch manages the files to deploy which are applied fits to a local database.
We use GitHub actions for deployment and database migrations are just one step of the pipeline. The step invokes sqitch deploy which runs all the pending migration files.
Then, all the approval process is standard for the environment. We require approvals in pull requests before merging to the main branch.
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PostgREST: Providing HTML Content Using Htmx
I'm experimenting with it right now using Squitch [1] to make maintenance easier. It still feels like a hack and I also still have my doubts about the viability of this for real-world use. It's fun though and I'm learning about all kinds of advanced Postgres features.
[1] https://sqitch.org/
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Modern Perl Catalyst: Docker Setup
For developing I find the official Perl docker images, running on a lightweight version of Debian, to be perfectly fine. Later on you might hand roll the skinniest possible image but the beauty of this setup is you can do that later and you don't need to change anything else. There's really not a lot going on here. First I declare the base image, which is as I said the official Perl image. I'm not using the latest Perl here because the application uses Sqitch for managing database migrations and that needs an update (there's a PR pending) to run on the most recent Perl so we'll just use a very nearly recent one instead. WORKDIR just defines where your application is installed. You can put it anywhere you want within reason. I like simple things so I use the most simple of all the conventions I've seen around.
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Database migration tool
Also, https://sqitch.org/
- How do you handle schema migrations?
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Announcing codd - a tool to apply postgres SQL migrations
Some possible upsides of codd: - No need to manually write verification SQL. Codd will update schema representation files when you codd add some-migration.sql and will compare those to the actual schema when deploying (I'd say in ways which would be very hard to replicate manually, see an example of what codd checks, giving you the option to rollback if they don't match or proceed but log non-matching db objects. - It seems to be much simpler to set codd up. You need 3 env vars to start, a folder to store your migrations and a self-contained statically linked executable. Just codd add migration.sql your way in after that - This might be very wrong as I couldn't find it explicitly documented, but this GH issue suggests it's not so simple to apply all pending migrations in a single transaction with Sqitch? Maybe it requires some bundling or something along those lines and then it's fine, though. In any case, codd will do this automatically when you run codd up (provided postgresql allows it).
Flyway
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Let's write a simple microservice in Clojure
The session logs show that the application loads configurations and establishes a connection with a PostgreSQL database. This involves initializing a HikariCP connection pool and Flyway for database migrations. The logs confirm that the database schema validation and migration checks were successful. The startup of the Jetty HTTP server follows, and the server becomes operational and ready to accept requests on the specified port.
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Ask HN: What tool(s) do you use to code review and deploy SQL scripts?
Also RedGate, but Flyway has some reasons to recommend it over RedGate Deploy depending on your DBAs/workflows: https://flywaydb.org/
(Though I don't think it is "complete" or "perfect", either.)
EF Migrations are in a really good place now if you like/don't mind C# as a language (and you can easily embed SQL inside the C#, too, but there are benefits to being able to also run high level C# code). With today's tooling you can package your migration "runner application" as a single deployable executable for most platforms. You can build the executable once and run it in all your environments. (The same tool that updates your QA and Staging updates your Prod, testably running the same migrations.) Given the single executable deployable I might even consider using it for projects not themselves written in C#.
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PostgreSQL Is Enough
There is a bit of tooling needed but is already around. For Java for example I had very good experience with a combination of flyway [1] for migrations, testcontainers [2] for making integration tests as easy as unit tests and querydsl [3] for a query and mapping layer.
[1] https://github.com/flyway/flyway
[2] https://java.testcontainers.org/modules/databases/postgres/
[3] https://github.com/querydsl/querydsl
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Using Flyway to version your database
When software starts using a database, it's advisable to have version control, just as we have Github to control our source code. This is all to be sure about what was executed for that specific version. For Java and Spring boot, we have the Flyway framework that aims to resolve this situation, free of charge.
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CI/CD for Databricks
If you're looking for tools, like https://www.liquibase.com/ or https://flywaydb.org/, which are database-state-based schema migration toolkits - it might be relatively straightforward to build similar ones using Databricks SQL drivers.
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Working with jOOQ and Flyway using Testcontainers
Honestly I kind of wish there was a Lukas Eder database migration library. Call it whatever jooq-migration. At least I would have more insight of what is going on (<-- seriously look at the commit history).
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Strategy to run database scripts on Kubernetes
This is a 4th option, which should play nice with ArgoCD. The following example runs flyway as a k8s job. The desired migration changes are recorded as files within the chart. This helm chart can be integrated with your application (Using hooks to determine when the migration job is run) or run manually.
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How do your teams run DB migrations?
By using an opinionated framework within the app/service (like Flyway, Migrate, Diesel, etc). Schema migrations happen on app/service start-up.
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I've never created a production database from scratch and am wondering how much trouble it would be to transition a one-to-one relationship to a one-to-many relationship if I determine at some point that the latter is required.
Depending on the language or platform there are libraries you can use to manage this, such as Prisma on node and Flyway for Java/JVM.
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How should I document and/or automate schema changes?
It's probably overkill but I've used github plus flyway at a couple places in the past which is pretty nice tool for tracking changes to a variety of db's, it's also very helpful if you ever need to replicate a db in a new region/environment.
What are some alternatives?
ContactsDemo - Example Catalyst Application
alembic - A database migrations tool for SQLAlchemy.
migrate - Database migrations. CLI and Golang library.
HikariCP - 光 HikariCP・A solid, high-performance, JDBC connection pool at last.
atlas - Manage your database schema as code
roundhouse - RoundhousE is a Database Migration Utility for .NET using sql files and versioning based on source control
maildev - :mailbox: SMTP Server + Web Interface for viewing and testing emails during development.
H2 - H2 is an embeddable RDBMS written in Java.
git-secret - :busts_in_silhouette: A bash-tool to store your private data inside a git repository.
dbmate - :rocket: A lightweight, framework-agnostic database migration tool.
docs - Documentation for Docker Official Images in docker-library
Hibernate - Hibernate's core Object/Relational Mapping functionality