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77 lines
3.5 KiB
Markdown
# Node Redis: Examples
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This folder contains example scripts showing how to use Node Redis in different scenarios.
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| File Name | Description |
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| `blocking-list-pop.js` | Block until an element is pushed to a list |
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| `command-with-modifiers.js` | Define a script that allows to run a command with several modifiers |
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| `connect-as-acl-user.js` | Connect to Redis 6 using an ACL user |
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| `lua-multi-incr.js` | Define a custom lua script that allows you to perform INCRBY on multiple keys |
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| `search+json.js` | Use [Redis Search](https://redisearch.io/) and [Redis JSON](https://redisjson.io/) |
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| `set-scan.js` | An example script that shows how to use the SSCAN iterator functionality |
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## Contributing
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We'd love to see more examples here. If you have an idea that you'd like to see included here, submit a Pull Request and we'll be sure to review it! Don't forget to check out our [contributing guide](../CONTRIBUTING.md).
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## Setup
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To set up the examples folder so that you can run an example / develop one of your own:
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```
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$ git clone https://github.com/redis/node-redis.git
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$ cd node-redis
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$ npm install -ws && npm run build
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$ cd examples
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$ npm install
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```
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### Coding Guidelines for Examples
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When adding a new example, please follow these guidelines:
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* Add your code in a single JavaScript or TypeScript file per example, directly in the `examples` folder
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* Do not introduce other dependencies in your example
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* Give your `.js` file a meaningful name using `-` separators e.g. `adding-to-a-stream.js` / `adding-to-a-stream.ts`
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* Indent your code using 2 spaces
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* Use the single line `//` comment style and comment your code
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* Add a comment at the top of your `.js` / `.ts` file describing what your example does
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* Add a comment at the top of your `.js` / `.ts` file describing any Redis commands that need to be run to set up data for your example (try and keep this minimal)
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* Use semicolons
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* Use `async` and `await`
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* Use single quotes, `'hello'` not `"hello"`
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* Place your example code in a single `async` function where possible, named according to the file name e.g. `add-to-stream.js` would contain `const addtoStream = async () => { ... };`, and call this function at the end of the file e.g. `addToStream();`
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* Unless your example requires a connection string, assume Redis is on the default localhost port 6379 with no password
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* Use meaningful example data, let's not use `foo`, `bar`, `baz` etc!
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* Leave an empty line at the end of your `.js` file
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* Update this `README.md` file to add your example to the table
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Use [connect-as-acl-user.js](./connect-as-acl-user.js) as a guide to develop a well formatted example script.
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### Example Template
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Here's a starter template for adding a new example, imagine this is stored in `do-something.js`:
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```javascript
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// This comment should describe what the example does
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// and can extend to multiple lines.
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// Set up the data in redis-cli using these commands:
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// <add your command(s) here, one per line>
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import { createClient } from 'redis';
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async function doSomething() {
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const client = createClient();
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await client.connect();
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// Add your example code here...
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await client.quit();
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}
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doSomething();
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```
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