Async memoize module powered by uber-cache
npm install uber-memoize
If you want to know about memoization read this http://en.wikipedia.org/wiki/Memoization
npm install uber-memoize
``js
function slowFn(i, cb) {
// Takes 5 seconds
setTimeout(cb, 5000)
}
var UberCache = require('uber-cache')
, uberMemoize = require('uber-memoize')
, uberCache = new UberCache()
// You can use any uber-cache-* engine to power memoize
, memoize = uberMemoize('some sort of prefix', uberCache)
, ttl = 10000 // 10 Seconds
, cachedSlowFn = memoize(slowFn, ttl)
// This first call will be slow
cachedSlowFn(1, function(err, result) {
// It will take 5 seconds to get here!
cachedSlowFn(1, function(err, result) {
// This will be quick!
})
})
})
// The memoized function comes with a clear() method which will invalidate
// its cache, ensuring that the next call executes the original function
cachedSlowFn.clear()
cachedSlowFn(1, function (err, result) {
// This will take 5 seconds again
})
``