Named Caches
You can define several cache stores for your application and use them completely separately :
const bento = new BentoCache({
default: 'memory',
stores: {
// One store named "memory". Only L1 in-memory cache
memory: bentostore()
.useL1Layer(memoryDriver({ maxSize: 10 * 1024 * 1024 })),
// One store named "multitier" using full multi-tier cache
multitier: bentostore()
.useL1Layer(memoryDriver({ maxSize: 10 * 1024 * 1024 }))
.useL2Layer(redisDriver({ connection: redisConnection }))
.useBus(redisBusDriver({ connection: redisConnection })),
// One store named "dynamo" using the dynamodb driver
dynamo: bentostore()
.useL2Layer(dynamodbDriver({ /* ... */ })),
},
})
Also note the default property at the top level, which allows you to define the default store that will be used when you interact with the cache without specifying a store.
Usage
To access the default cache, just use the methods directly on the bento object :
bento.getOrSet('foo', () => getFromDb(42))
bento.set('foo', 'bar')
bento.get('foo')
bento.delete('foo')
And to access a specific store, use the .use() method with the name of the store :
bento.use('multitier').getOrSet('foo', () => getFromDb(42))
bento.use('multitier').set('foo', 'bar')
bento.use('dynamo').get('foo')
bento.use('dynamo').delete('foo')
Separation of Stores
In some cases, you may want to define two named caches that use the same backend. In this case, you will need to add a prefix to your keys to avoid collisions.
const bento = new BentoCache({
default: 'users',
stores: {
users: bentostore()
.useL2Layer(redisDriver({ prefix: 'users' })),
posts: bentostore()
.useL2Layer(redisDriver({ prefix: 'posts' }))
},
})
Now, it will work as expected. There will be no collisions between the different keys, and when you use the .clear() function that allows you to delete all cache keys, you will only delete the keys of that specific store.
bento.use('users').set('foo', '2')
bento.use('users').get('foo') // '2'
bento.use('posts').get('foo') // undefined
bento.use('posts').set('foo', '1')
bento.use('posts').get('foo') // '1'
bento.use('users').clear()
bento.use('users').get('foo') // undefined
bento.use('posts').get('foo') // '1'