ttl-cache-redis

This is a supersimple abstraction for storing strings and JSON-objects in redis.

Installing

Using npm:

$ npm install @appfarm/ttl-cache-redis

Example

const Cache = require('@appfarm/ttl-cache-redis')
const myCache = new Cache({
    redisConnectionString: 'redis://localhost:6379',
    cacheKeyPrefix: 'MY-CACHE-', // prefix any key with this value
})

// Setting "foo" to MY-CACHE-newkey with a
// lifetime of 10 minutes
myCache
    .setStringValue('newkey', 'foo', 600)
    .then(() => console.log('Successfully set string value'))
    .catch(err => console.error(err))

myCache
    .setObjectValue('myobject', { foo: 'bar' }, 300)
    .then(() => console.log('Successfully set object value'))
    .catch(err => console.error(err))

// Retrieve string value from cache
myCache
    .getStringValue(key)
    .then(value => {
        console.log('Found value:', value)
    })
    .catch(err => {
        console.log('Unable to find value or key has expired')
    })

// Retrieve object value from store
myCache
    .getObectValue(key)
    .then(objectValue => {
        console.log('Found object:', objectValue)
    })
    .catch(err => {
        console.log('Unable to find value or key has expired')
    })

// Fire and forget - delete value from store immediately
// Returns nothing.
myCache.invalidate('newkey')