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simple-adonis-cache

v0.4.1

Published

A simple cache mechanism for AdonisJs

Downloads

3

Readme

Simple Adonis Cache

npm (scoped)

A simple cache mechanism for AdonisJs.

Installation

adonis install simple-adonis-cache

After installation, you need to register the providers inside start/app.js file.

// start/app.js
const providers = [
  ...,
  'adonis-cache/providers/CacheProvider'
]

Configuration

The cache configuration is located at config/cache.js.

// config/cache.js
module.exports = {
  // Indicates cache must be enabled or not
  enabled: true,

  // Indicates where objects should reside on
  driver: 'memory',

  // Indicates prefix for keys
  prefix: 'cache:'
}

API Reference

Cache.remember(key, expire, value)

This function store value in key for expire seconds and return value.

  • key: must be String indicating the key
  • expire: must be Number indicating expiration time
  • value: can be anything such as Function, String, Number, etc.

Example code:

const Cache = use('Cache')
const User = use('App/Models/User')
class UserController {
  async index(request, response) {
    // retrieve users from database and cache them for 60 seconds.
    const users = await Cache.rememebr('users', 60, () => {
      return User.all()
    })

    // retrieve tags and cache them for 1 hour.
    const tags = await Cache.rememebr('users', 60 * 60, () => {
      return ['goods', 'services']
    })

    // retrieve url and cache it for 1 day.
    const url = await Cache.rememebr('users', 24 * 60 * 60, () => {
      return 'http://api.example.com'
    })
  }
}

Cache.forever(key, value)

This function store value in key forever and return value.

  • key: must be String indicating the key
  • value: can be anything such as Function, String, Number, etc.

Example code:

const Cache = use('Cache')
const User = use('App/Models/User')
class UserController {
  async index(request, response) {
    // retrieve users from database and cache them forever.
    const users = await Cache.forever('users', () => {
      return User.all()
    })

    // retrieve tags and cache them forever.
    const tags = await Cache.forever('users', () => {
      return ['goods', 'services']
    })

    // retrieve url and cache it forever.
    const url = await Cache.forever('users', () => {
      return 'http://api.example.com'
    })
  }
}

Cache.forget(key)

This function remove specified key.

  • key: must be String indicating the key

Example code:

const Cache = use('Cache')
const User = use('App/Models/User')
class UserController {
  async index(request, response) {
    // forget a specific key
    await Cache.forget('users')
  }
}

To Do

  • [x] Add basic functionality
  • [x] Add memory driver
  • [x] Add redis driver
  • [ ] Add a method to flush all cached values
  • [ ] Add a command to flush all cached values
  • [ ] Support for different environments

Release History

  • 0.1.0 - First draft.
  • 0.3.0 - Initial release and basic functionality and supports for memory storage.
  • 0.4.0 - Add support for Redis driver

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.

License

MIT