A simple in memory cache to use with javascript.
npm install node-dummy-cache
Import inside your code:
var cacheFactory = require('node-dummy-cache');Download lib/dummy-cache.js.
Import inside HTML:
<script type="text/javascript" src="dummy-cache.js"></script>For old browsers you will also need json2.js.
var users = cacheFactory.create(cacheFactory.ONE_HOUR);
users.put(1, { name : 'A' });
var user = users.get(1);var users = cacheFactory.create(cacheFactory.ONE_HOUR, function (id, callback) {
// Do complex stuff here
callback(undefined, user);
});
users.get(1, function(err, user) {
// You got it
});Before:
function dummy(a, b, c, callback) {
// Do complex stuff here
callback(undefined, 'A', 'B');
};
dummy(1, 2, 3, function(err, data1, data2) {
// You got it
});Adding cache:
var dummy = cacheFactory.create(cacheFactory.ONE_HOUR, function (a, b, c, callback) {
// Do complex stuff here
callback(undefined, 'A', 'B');
});
dummy(1, 2, 3, function(err, data, data2) {
// You got it
});var users = cacheFactory.create(cacheFactory.ONE_HOUR, function (id, callback) {
// Do complex stuff here
callback(undefined, user);
});
users.get(1, function(err, user) {
// You got it
});
users(1, function(err, user) {
// You got it
});
var user = users.get(1); // Returns only if cached
user = users(1); // Returns only if cachedvar users = cacheFactory.create(cacheFactory.ONE_HOUR, function (id1, id2, callback) {
// Do complex stuff here
callback(undefined, user, date);
});
users.get(1, 2, function(err, user, date) {
// You got it
});
var user = users.get(1, 2); // Returns the user only if cached
users.put(1, 2, user); // Adds the user, but no dateAll arguments passed to the get / put must be JSON serializable.
Creates a new cache.
Params:
- maxAliveTimeMS : Max time a value will stay in cache starting with its creation
- maxNotAccessedTimeMs : Max time a value will stay in cache after its last access
- fetcher : callback to fetch the data
Creates a new cache.
Params:
- maxAliveTimeMS : Max time a value will stay in cache starting with its creation
- fetcher : callback to fetch the data
Creates a new cache. All values must be added to cache using put.
Params:
- maxAliveTimeMS : Max time a value will stay in cache starting with its creation
- maxNotAccessedTimeMs : Max time a value will stay in cache after its last access
Creates a new cache. Values never expires.
Params:
- fetcher : callback to fetch the data
Creates a new cache. All values must be added to cache using put.
Params:
- maxAliveTimeMS : Max time a value will stay in cache starting with its creation
Creates a new cache. Values never expires. All values must be added to cache using put.
MIT. Check LICENSE file.