combine concurrent gets for the same keys into one get/multiget to the server
// first you need memcached. (or something that implements the methods get and getMulti)
var Memcached = require('memcached');
var multi = require('memcache-multiplex');
var getter = multi(new Memcached('127.0.0.1:11211'));
// all of these calls
getter.get('hi',function(err,v){
console.log('the value of hi',v)
})
getter.get('hi',function(err,v){
console.log('the value of hi',v)
})
getter.get('hi',function(err,v){
console.log('the value of hi',v)
})
// make only one call to the memcache server
// get a,b
getter.getMulti(['a','b'],function(){
});
// get c but not b because im alredy fetching b
getter.getMulti(['b','c'],function(){
});
// no call is made im already requesting the keys im searching for.
getter.getMulti(['a','c'],function(){
});
// triggers 2 "getMulti" on the client driver.
// one for keys ['a','b'] and one for just key ['c']- this module exports a function
- if you call this function with a memcached client you will get an object with getter methods
gets the key
get multiple keys
-
stats is an object
-
it has stats that help you determine how well you are multiplexing
-
get
- keys , how many single keys were requested from the memcached server
- calls, how many keys were requested by calls to the function
-
multi
- keys, how many keys were requested from the memcached server
- requested, how many keys were requested by calls to getMulti
- calls, how many calls to getMulti
- made, how many calls to get multi resulted in fetching keys from the memcached server
{
get:{keys:0,calls:0},
multi:{keys:0,requested:0,calls:0,made:0}
}rant! if you use node you should not make multiple concurrent gets for the same external resources. this applies to databases web services whatever.