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url_tracker_tool/node_modules/bullmq/README.md
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<div align="center">
<br/>
<img src="https://user-images.githubusercontent.com/95200/143832033-32e868df-f3b0-4251-97fb-c64809a43d36.png" width="800" />
<br/>
<br/>
<p>
The fastest, most reliable, Redis-based distributed queue for Node. <br/>
Carefully written for rock solid stability and atomicity.
</p>
Read the <a href="https://docs.bullmq.io">documentation</a>
<br/>
<br/>
<p>
<a href="https://openbase.com/js/bullmq?utm_source=embedded&utm_medium=badge&utm_campaign=rate-badge">
<img src="https://badges.openbase.com/js/rating/bullmq.svg"/>
</a>
<a href="https://gitter.im/OptimalBits/bull">
<img src="https://badges.gitter.im/Join%20Chat.svg"/>
</a>
<a href="https://badge.fury.io/js/bullmq">
<img src="https://badge.fury.io/js/bullmq.svg"/>
</a>
<a href="https://coveralls.io/github/taskforcesh/bullmq?branch=master">
<img src="https://coveralls.io/repos/github/taskforcesh/bullmq/badge.svg?branch=master"/>
</a>
<a href="https://github.com/semantic-release/semantic-release">
<img src="https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg"/>
</a>
</p>
<p>
<em>Follow <a href="https://twitter.com/manast">@manast</a> for *important* Bull/BullMQ/BullMQ-Pro news and updates!</em>
</p>
</div>
# 🛠 Tutorials
You can find tutorials and news in this blog: https://blog.taskforce.sh/
# Official FrontEnd
[<img src="http://taskforce.sh/assets/logo_square.png" width="150" alt="Taskforce.sh, Inc" style="padding: 200px"/>](https://taskforce.sh)
Supercharge your queues with a professional front end:
- Get a complete overview of all your queues.
- Inspect jobs, search, retry, or promote delayed jobs.
- Metrics and statistics.
- and many more features.
Sign up at [Taskforce.sh](https://taskforce.sh)
# 🚀 Sponsors 🚀
<table cellspacing="0" cellpadding="0" border="0">
<tr>
<td>
<a href="https://www.dragonflydb.io/">
<img src="https://raw.githubusercontent.com/dragonflydb/dragonfly/main/.github/images/logo-full.svg" width=550 alt="Dragonfly" />
</a>
</td>
<td>
Dragonfly is a new Redis™ drop-in replacement that is fully compatible with BullMQ and brings some important advantages over Redis™ such as massive
better performance by utilizing all CPU cores available and faster and more memory efficient data structures. Read more <a href="https://www.dragonflydb.io/docs/integrations/bullmq">here</a> on how to use it with BullMQ.
</td>
</tr>
<tr>
<td>
<a href="https://dashboard.memetria.com/new?utm_campaign=BULLMQ">
<img src="https://www.memetria.com/images/logo/memetria-logo.svg" width=350 alt="Memetria for Redis" />
</a>
</td>
<td>
If you need high quality production Redis instances for your BullMQ project, please consider subscribing to <a href="https://dashboard.memetria.com/new?utm_campaign=BULLMQ">Memetria for Redis</a>, leaders in Redis hosting that works perfectly with BullMQ. Use the promo code "BULLMQ" when signing up to help us sponsor the development of BullMQ!
</td>
</tr>
</table>
# Used by
Some notable organizations using BullMQ:
<table cellspacing="0" cellpadding="0">
<tr>
<td valign="center">
<a href="https://github.com/microsoft/lage">
<img
src="https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LUuDmt_xXMfG66Rn1GA%2Fuploads%2FUvwInTAmk7hxAViDwJzU%2Fclipart1565701.png?alt=media"
width="150"
alt="Microsoft"
/>
</a>
</td>
<td valign="center">
<a href="https://github.com/vendure-ecommerce/vendure">
<img
src="https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LUuDmt_xXMfG66Rn1GA%2Fuploads%2FvT30DUqsi61gL8edn3R2%2Fwordmark-logo.png?alt=media"
width="150"
alt="Vendure"
/>
</a>
</td>
<td valign="center">
<a href="https://github.com/datawrapper/datawrapper">
<img
src="https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LUuDmt_xXMfG66Rn1GA%2Fuploads%2FCJ5XmotpBBsuSgD8CilC%2Fdatawrapper-logo.png?alt=media"
width="150"
alt="Datawrapper"
/>
</a>
</td>
<td valign="center">
<a href="https://github.com/nestjs/bull/tree/master/packages/bullmq">
<img
src="https://876297641-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LUuDmt_xXMfG66Rn1GA%2Fuploads%2FfAcGye182utFUtPKdLqJ%2FScreenshot%202022-02-15%20at%2011.32.39.png?alt=media&token=29feb550-f0bc-467d-a290-f700701d7d15"
width="150"
alt="Nest"
/>
</a>
</td>
</tr>
<tr>
<td valign="center">
<a href="https://github.com/teamcurri">
<img
src="https://user-images.githubusercontent.com/659829/161662129-ae645bc4-c1e9-48ff-997e-4cee281a964a.png"
width="150"
alt="Curri"
/>
</a>
</td>
<td valign="center">
<a href="https://novu.co">
<img
src="https://assets.super.so/1e9f5a51-c4c6-4fca-b6e8-25fa0186f139/images/0f550019-16db-4a65-90d1-1bdb7d3c5f20/novu-logo-gradient-light-background2x.png"
width="150"
alt="Novu"
/>
</a>
</td>
</td>
<td valign="center">
<a href="https://www.nocodb.com">
<img
src="https://github.com/nocodb/nocodb/raw/develop/packages/nc-gui/assets/img/icons/512x512.png"
width="50"
alt="NoCodeDB"
/>
</a>
</td>
</tr>
</table>
# The gist
Install:
```
$ yarn add bullmq
```
Add jobs to the queue:
```ts
import { Queue } from 'bullmq';
const queue = new Queue('Paint');
queue.add('cars', { color: 'blue' });
```
Process the jobs in your workers:
```ts
import { Worker } from 'bullmq';
const worker = new Worker('Paint', async job => {
if (job.name === 'cars') {
await paintCar(job.data.color);
}
});
```
Listen to jobs for completion:
```ts
import { QueueEvents } from 'bullmq';
const queueEvents = new QueueEvents('Paint');
queueEvents.on('completed', ({ jobId }) => {
console.log('done painting');
});
queueEvents.on(
'failed',
({ jobId, failedReason }: { jobId: string; failedReason: string }) => {
console.error('error painting', failedReason);
},
);
```
This is just scratching the surface, check all the features and more in the official <a href="https://docs.bullmq.io">documentation</a>
# Feature Comparison
Since there are a few job queue solutions, here is a table comparing them:
| Feature | [BullMQ-Pro](https://bullmq.io/#bullmq-pro) | [BullMQ](https://bullmq.io) | Bull | Kue | Bee | Agenda |
| :------------------------ | :-------------: | :-------------: | :-------------: | :---: | -------- | ------ |
| Backend | redis | redis | redis | redis | redis | mongo |
| Observables | ✓ | | | | | |
| Group Rate Limit | ✓ | | | | | |
| Group Support | ✓ | | | | | |
| Batches Support | ✓ | | | | | |
| Parent/Child Dependencies | ✓ | ✓ | | | | |
| Priorities | ✓ | ✓ | ✓ | ✓ | | ✓ |
| Concurrency | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Delayed jobs | ✓ | ✓ | ✓ | ✓ | | ✓ |
| Global events | ✓ | ✓ | ✓ | ✓ | | |
| Rate Limiter | ✓ | ✓ | ✓ | | | |
| Pause/Resume | ✓ | ✓ | ✓ | ✓ | | |
| Sandboxed worker | ✓ | ✓ | ✓ | | | |
| Repeatable jobs | ✓ | ✓ | ✓ | | | ✓ |
| Atomic ops | ✓ | ✓ | ✓ | | ✓ | |
| Persistence | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| UI | ✓ | ✓ | ✓ | ✓ | | ✓ |
| Optimized for | Jobs / Messages | Jobs / Messages | Jobs / Messages | Jobs | Messages | Jobs |
## Contributing
Fork the repo, make some changes, submit a pull-request! Here is the [contributing](contributing.md) doc that has more details.
# Thanks
Thanks for all the contributors that made this library possible,
also a special mention to Leon van Kammen that kindly donated
his npm bullmq repo.