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
})