worker
walex
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worker | walex | |
---|---|---|
19 | 17 | |
1,641 | 251 | |
3.1% | - | |
9.7 | 9.1 | |
16 days ago | 18 days ago | |
TypeScript | Elixir | |
MIT License | MIT License |
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.
worker
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Postgres as Queue
Big fan of Graphile Worker to handle this job. https://github.com/graphile/worker
- GitHub - graphile/worker: High performance Node.js/PostgreSQL job queue (also suitable for getting jobs generated by PostgreSQL triggers/functions out into a different work queue)
- High performance Node.js/PostgreSQL job queue
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Choose Postgres Queue Technology
I do enjoy using https://github.com/graphile/worker for my postgresql queuing needs. Very scalable, the next release 0.14 even more so, and easy to use.
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PGMQ: Simple Message Queues Built on Postgres
On the same subject (job queue based on PostgreSQL), I'm successfully using the https://github.com/graphile/worker/ (NodeJS) project in production.
Jobs are written in Javascript.
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How Trigger.dev makes serverless background jobs possible
Postgres is used both as a store of state for Runs/Tasks and for the Job queue (we use Graphile Worker).
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Intro to PostGraphile V5 (Part 2): Plugins and Presets
Having now built V5's unified plugins and presets system, I'm extremely pleased with it! I'm so happy, in fact, that I'm looking forward to integrating it with Graphile's other tools such as Graphile Worker (our Postgres-backed job queue) and Graphile Migrate (a lightweight SQL-based migration framework that focuses on DX) once V5 is out and stable.
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SQL Maxis: Why We Ditched RabbitMQ and Replaced It with a Postgres Queue
Another good library for this is Graphile Worker:
https://github.com/graphile/worker
Uses both listen notify and advisory locks so it is using all the right features. And you can enqueue a job from sql and plpgsql triggers. Nice!
Worker is in Node js.
https://github.com/graphile/worker
- whats the difference bewteen SQL Qeues and server queues ?
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How to schedule tasks in a Node.js app 🕙
See also graphile-worker: https://github.com/graphile/worker (lower latency than pg-boss because it uses LISTEN/NOTIFY)
walex
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The Guide to PostgreSQL Data Change Tracking
The WAL CDC approach: https://github.com/cpursley/walex?tab=readme-ov-file#publica...
CREATE PUBLICATION news_item FOR TABLE news WHERE (topic IS "AAPL");
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Elixir Nitpicks
What do you mean testing with processes?
I won't suggest these are the best written tests, but I test various processes, supervisors, etc like this:
https://github.com/cpursley/walex/blob/master/test/walex/sup...
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PostgreSQL Is Enough
You don’t send the entire WAL, just what you subscribe to - and you can even filter via SQL: https://github.com/cpursley/walex?tab=readme-ov-file#publica...
- A Technical Dive into PostgreSQL's replication mechanisms
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Fly Postgres, Managed by Supabase
What we do is much if the business logic in Postgres. But then there’s all the other stuff like external integrations, etc.
We handled that by having an Even system built on the Postgres WAL that we use like a callback system.
I put together a little library in Elixir (that originally started out as forked Supabase realtime) for this:
https://github.com/cpursley/walex
Recently added the ability to configure WalEx to forward events to webhooks or EventRelay (so you don’t need to know Elixir).
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All the ways to capture changes in Postgres
If you're using Elixir, check out https://github.com/cpursley/walex
I've actually been thinking about turning this idea into a product where you can just point it at your postgres database and select the tables you want to listen to (with filters, like you describe). And have that forwarded to a webhook (with possibility of other protocols).
I'd love to hear folks thoughts on that (and if it would be something people would pay for).
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Show HN: ElectricSQL, Postgres to SQLite active-active sync for local-first apps
Neat, this is the pattern I've been thinking about for a while now. Also glad to see this is Elixir based.
I've been using https://github.com/cpursley/walex (basically a fork of cainophile via a fork for subabase) to listen to Postgres changes in Elixir.
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How to Listen to Database Changes Using Postgres Triggers in Elixir
https://github.com/cpursley/walex
Which is based on WAL logs and doesnt have the same limitations.
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PostgreSQL Logical Replication Gotchas
Great writeup, just added this to the WalEx readme:
https://github.com/cpursley/walex
(WalEx is an Elixir lib for listening to the WAL and perform callback-like actions with the data)
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We used Elixir's Observer to hunt down bottlenecks
Very cool.
I'm using Elixir to listen to change events via https://github.com/cpursley/walex (which I basically ripped off from Supabase).
What are some alternatives?
pg-boss - Queueing jobs in Node.js using PostgreSQL like a boss
PolarDB-for-PostgreSQL - A cloud-native database based on PostgreSQL developed by Alibaba Cloud.
dramatiq - A fast and reliable background task processing library for Python 3.
neon - Neon: Serverless Postgres. We separated storage and compute to offer autoscaling, branching, and bottomless storage.
good_job - Multithreaded, Postgres-based, Active Job backend for Ruby on Rails.
realtime - Broadcast, Presence, and Postgres Changes via WebSockets
start - Kyoto starter project
libcluster - Automatic cluster formation/healing for Elixir applications
r2dbc-postgresql - Postgresql R2DBC Driver
helm-charts - neondatabase helm charts
BeanstalkD - Beanstalk is a simple, fast work queue.
supavisor - A cloud-native, multi-tenant Postgres connection pooler.