pg-osc
vitess
| pg-osc | vitess | |
|---|---|---|
| 7 | 60 | |
| 486 | 17,912 | |
| - | 1.1% | |
| 7.6 | 9.9 | |
| about 1 month ago | about 8 hours ago | |
| Ruby | Go | |
| 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.
pg-osc
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How not to change PostgreSQL column type
My thoughts exactly. It's surprising that external online schema change tools for Postgres have only become a thing fairly recently! The only two I'm aware of are:
* pgroll: Written in Golang, first commits June 2023. https://github.com/xataio/pgroll
* pg-osc: Written in Ruby, first commits Dec 2021. https://github.com/shayonj/pg-osc
Meanwhile over in the MySQL and MariaDB ecosystem, external OSC tools have been around for quite some time, starting with oak-online-alter-table over 15 years ago. The most popular options today are pt-online-schema-change or gh-ost, but other battle-tested solutions include fb-osc, LHM, and the latest entry Spirit.
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Pgroll: zero-downtime, undoable, schema migrations for Postgres
Great to see more innovation in this space! How does this compare to?
https://github.com/shayonj/pg-osc
- Want to avoid MySQL but find PlanetScale really appealing
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Changing Tires at 100mph: A Guide to Zero Downtime Migrations
Postgres has some less robust tooling, at least both of these carry the "experimental" tag:
https://news.ycombinator.com/item?id=29825520
https://github.com/shayonj/pg-osc
But, still, they do it for you.
- Alter PostgreSQL tables without locks and downtime
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pg-osc: Zero downtime non blocking schema changes in PostgreSQL
You can also try it out, Github: https://github.com/shayonj/pg-osc
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Show HN: Zero-downtime PostgreSQL migrations for Ruby on Rails
This is very cool! I no longer work on Rails on daily basis, but would have loved to have this.
I built something similar called `pg-osc` / `pg-online-schema-change` for PostgreSQL workloads. It does zero downtime migrations using triggers and shadow table.
Github: https://github.com/shayonj/pg-osc.
Blog: https://www.shayon.dev/post/2022/47/pg-osc-zero-downtime-sch...
Also love that this is written in Ruby :). Going to check it out on some side projects.
vitess
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A MySQL compatible database engine written in pure Go
With Vitess likely merging a lot of its binaries into a single unified binary: https://github.com/vitessio/vitess/issues/7471#issuecomment-...
... it would be a wild future if Vitess replaced the underlying MySQL engine with this as long as the performance is good enough.
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The challenges of supporting foreign key constraints
Thank you for the compliment!
We recently started adding support for CTEs in Vitess! You can check out https://github.com/vitessio/vitess/pull/14321 if you want to see some technical details of the implementation.
For now, we have added preliminary support by converting them to derived tables internally, but we believe that we need to make CTEs first-class citizens themselves of query planning. Once we make that change, we can look towards supporting recursive CTEs.
This however will take some time, but then, all good things do!
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Vitess 18
Why would it be a Google project? https://github.com/vitessio/vitess
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PlanetScale Scaler Pro
This is great news. I strolled around https://github.com/vitessio/vitess/issues/12967.
Are there any public discussions of more trade-offs vitess has to make to enable fks?
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What is the best database technology to use to create a new chat app today?
MySQL + Vitess I noticed Slack gets by using MySQL because they're using Vites. From Slack's post (https://slack.engineering/scaling-datastores-at-slack-with-vitess/) it seems like they choose Vites because it facilitated a smooth transition because it's built on top of MySQL.
- Vitess – Scalable. Reliable. MySQL-Compatible. Cloud-Native. Database
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How can I avoid duplicate API calls in a serverless infra?
This sounds very similar to the connection pooling done by vitess https://vitess.io/.
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Scaling Databases at Activision [pdf]
https://github.com/vitessio/vitess/issues/12967
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Want to avoid MySQL but find PlanetScale really appealing
A lot of this is possible thanks to the magic of Vitess.
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Vitess 16
"Vitess is a database clustering system for horizontal scaling of MySQL."
https://github.com/vitessio/vitess
What are some alternatives?
pg-online-schema-change - Easy CLI tool for making zero downtime schema changes and backfills in PostgreSQL [Moved to: https://github.com/shayonj/pg-osc]
tidb - TiDB is an open-source, cloud-native, distributed, MySQL-Compatible database for elastic scale and real-time analytics. Try AI-powered Chat2Query free at : https://tidbcloud.com/free-trial
safe-pg-migrations - Make your PostgreSQL migrations safe
supabase - The open source Firebase alternative.
reshape - An easy-to-use, zero-downtime schema migration tool for Postgres
cockroach - CockroachDB - the open source, cloud-native distributed SQL database.
django-pg-zero-downtime-migrations - Django postgresql backend that apply migrations with respect to database locks
citus - Distributed PostgreSQL as an extension
tusker - PostgreSQL migration management tool
go-mysql-elasticsearch - Sync MySQL data into elasticsearch
pgroll - PostgreSQL zero-downtime migrations made easy
kingshard - A high-performance MySQL proxy