redis-cache-promise

redis-cache-promise

Very simple module to handle Redis cache key/value with promises

Methods

configure(Object): Set the configuration parameters to connect with Redis, Return the instance of the redis-cache-promise

• host(string): Host name or ip of the redis server
• (OPTIONAL) db(int): Database number, default value 0
• (OPTIONAL) expiry(int): Default value of the cache in seconds, default value : 86400
• (OPTIONAL) password(string): Password of the Redis server if "requirepass" is set on the server

Promise connect(): Connect with Redis, return a promise.

Example

var Cache = require('redis-cache-promise')

var cache = new Cache()

cache
  .configure({
    host: '192.168.1.36',
    db: 0, //optional default 0
    expiry: 5, //optional default 86400
    password: '123', //optional
  })
  .connect()
  .then(function () {

    cache.set('key',
      {
        value: 'object'
      },
      {
        expiry: 5 // in seconds from now
      })
      .then(function (value) {
        console.log(value)
      }).catch(function (err) {
        throw err
      })

    var interval = setInterval(function () {
      cache.get('key')
        .then(function (value, key) {
          console.log('the value of', key, ' => ', value)
          if (!value) {
            console.log(key, 'expired')
            clearInterval(interval)
          }
        })
        .catch(function (err) {
          throw err
        })

      cache.get('key 2')
        .otherwise(function (deferred, key) {
          var newValue = 'newValue 2'
          console.log(key, 'without value, this function will set the value to ' + newValue)
          return deferred(newValue, {
            expiry: 3
          })
        })
        .then(function (value, key) {
          console.log('the value of', key, ' => ', value)
        })
        .catch(function (err) {
          throw err
        })
    }, 1000)


  })
  .catch(function (err) {
    throw err
  })

#Version 0.1.1