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record-cache
Advanced tools
Cache optimised for record like things like host:port
or domain.names
.
npm install record-cache
var recordCache = require('record-cache')
var cache = recordCache({
maxSize: 1000 // store ~1000 values at max
maxAge: 1000 // gc values older than ~1000ms
})
cache.add('hello', '127.0.0.1')
cache.add('hello', '127.0.1.1')
cache.add('hello', '127.0.0.2')
console.log(cache.get('hello', 2)) // prints two of the above
// wait 2s
setTimeout(function () {
console.log(cache.get('hello', 2)) // prints []
}, 2000)
var cache = recordCache([options])
Create a new record cache.
Options include:
{
maxSize: 1000, // approximate max size
maxAge: 1000, // approximate max age in ms
onStale: false // function called when evicting stale records
}
In the worst case the cache will be 2 * maxSize
large, and
if maxAge
is used old values are gc'ed every 0.66 * maxAge - 1.33 * maxAge
with an optional callback to the onStale
function upon record eviction.
This is to greatly simplify the data structures and also gives us a pretty decent perf boost compared to other cache modules out there.
cache.add(recordName, value)
Push a new value to the record set. value
should be serialisable.
cache.remove(recordName, value)
Remove a value from the record set. value
should be a previously added value.
var list = cache.get(recordName, [maxCount])
Get a list of values from the record set. The list will be randomised.
Specify maxCount
to only get this many values at max.
cache.size
Get the actual size of the cache.
cache.clear()
Clear all values from the cache.
cache.destroy()
Completely destroy the cache. Needed if you are using the maxAge
option to
cancel the gc timer.
MIT
FAQs
Cache optimised for record like things
The npm package record-cache receives a total of 7,819 weekly downloads. As such, record-cache popularity was classified as popular.
We found that record-cache demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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